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1. Development of high-level applications for High Energy Photon Source booster

Author

Peng, Yuemei, Ji, Daheng, Ji, Hongfei, Li, Nan, Lu, Xiaohan, Tian, Saike, Wei, Yuanyuan, Xu, Haisheng, Zhao, Yaliang, Jiao, Yi, and Li, Jingyi

Subjects
Physics - Accelerator Physics
Abstract

The High Energy Photon Source (HEPS), is the first fourth-generation storage ring light source being built in the suburb of Beijing, China. The storage ring was designed with the emittance lower than 60 pm.rad with a circumference of 1.36 km and beam energy of 6 GeV. Its injector contains a 500 MeV S-band Linac and a 454 m booster which was designed as an accumulator at the extraction energy. In the energy ramping control design of HEPS booster, the ramping process was programed to be able to stop and stay at any energy between the injection energy and the extraction energy. This feature enables us to conduct energy-dependent machine studies and ramping curve optimization. The beam commissioning of HEPS Linac finished in June, 2023. And the beam commissioning of booster started in the end of July, 2023. In November 17, main target values proposed in the preliminary design report has been reached. The high-level applications (HLAs) are essential tools for beam commissioning. The development of HLAs, which are based on the framework named Python accelerator physics application set (Pyapas), started in the end of 2021. The HEPS physics team spent more than one year to develop and test the HLAs to meet the requirements of beam commissioning of the booster. Thanks to the modular design, the principle based on physical quantities, and the ability of running simulation models online from the Pyapas, the development efficiency and reliability of the HLAs have been greatly improved. In particular, the principle based on physical quantities allows us to control the beam more intuitively.

Published
2024

2. First beam storage in the High Energy Photon Source storage ring: First beam storage in the High Energy Photon Source storage...

Author

Xu, Haisheng, Cui, Xiaohao, Duan, Zhe, Guo, Yuanyuan, Huang, Xiyang, Ji, Daheng, Ji, Hongfei, Jiao, Yi, Li, Nan, Li, Xiaoyu, Lu, Xiaohan, Meng, Cai, Peng, Yuemei, Tian, Saike, Wang, Na, Wei, Yuanyuan, Zhao, Yaliang, Bao, Wei, Lin, Siyu, Qin, Liyan, Su, Mengyu, Zeng, Fancong, Zhao, Zihang, Cao, Jianshe, Dong, Yuhui, He, Ping, Kang, Wen, Li, Jian, Li, Jingyi, Pan, Weimin, Qu, Huamin, Wang, Jiuqing, Xu, Gang, and Zhang, Jing

Published
2025
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3. Correction: CEPC Technical Design Report: Accelerator

Author

Abdallah, Waleed, de Freitas, Tiago CarlosAdorno, Afanaciev, Konstantin, Ahmad, Shakeel, Ahmed, Ijaz, Ai, Xiaocong, Aleem, Abid, Altmannshofer, Wolfgang, Alves, Fabio, An, Weiming, An, Rui, Anderle, Daniele Paolo, Antusch, Stefan, Arai, Yasuo, Arbuzov, Andrej, Arhrib, Abdesslam, Ashry, Mustafa, Bai, Sha, Bai, Yu, Bai, Yang, Bairathi, Vipul, Balazs, Csaba, Bambade, Philip, Ban, Yong, Bandyopadhyay, Triparno, Bao, Shou-Shan, Barber, Desmond P., Bat, Ays¸e, Batozskaya, Varvara, Behera, Subash Chandra, Belyaev, Alexander, Bertucci, Michele, Bi, Xiao-Jun, Bi, Yuanjie, Bian, Tianjian, Bianchi, Fabrizio, Bieko¨tter, Thomas, Biglietti, Michela, Bilanishvili, Shalva, Binglin, Deng, Bodrov, Denis, Bogomyagkov, Anton, Bondarenko, Serge, Boogert, Stewart, Boonekamp, Maarten, Borri, Marcello, Bosotti, Angelo, Boudry, Vincent, Boukidi, Mohammed, Boyko, Igor, Bozovic, Ivanka, Bozzi, Giuseppe, Brient, Jean-Claude, Budzinskaya, Anastasiia, Bukhari, Masroor, Bytev, Vladimir, Cacciapaglia, Giacomo, Cai, Hua, Cai, Wenyong, Cai, Wujun, Cai, Yijian, Cai, Yizhou, Cai, Yuchen, Cai, Haiying, Cai, Huacheng, Calibbi, Lorenzo, Cang, Junsong, Cao, Guofu, Cao, Jianshe, Chance, Antoine, Chang, Xuejun, Chang, Yue, Chang, Zhe, Chang, Xinyuan, Chao, Wei, Chatrabhuti, Auttakit, Che, Yimin, Che, Yuzhi, Chen, Bin, Chen, Danping, Chen, Fuqing, Chen, Fusan, Chen, Gang, Chen, Guoming, Chen, Hua-Xing, Chen, Huirun, Chen, Jinhui, Chen, Ji-Yuan, Chen, Kai, Chen, Mali, Chen, Mingjun, Chen, Mingshui, Chen, Ning, Chen, Shanhong, Chen, Shanzhen, Chen, Shao-Long, Chen, Shaomin, Chen, Shiqiang, Chen, Tianlu, Chen, Wei, Chen, Xiang, Chen, Xiaoyu, Chen, Xin, Chen, Xun, Chen, Xurong, Chen, Ye, Chen, Ying, Chen, Yukai, Chen, Zelin, Chen, Zilin, Chen, Gang, Chen, Boping, Chen, Chunhui, Cheng, Hok Chuen, Cheng, Huajie, Cheng, Shan, Cheng, Tongguang, Chi, Yunlong, Chimenti, Pietro, Chiu, Wen Han, Cho, Guk, Chu, Ming-Chung, Chu, Xiaotong, Chu, Ziliang, Coloretti, Guglielmo, Crivellin, Andreas, Cui, Hanhua, Cui, Xiaohao, Cui, Zhaoyuan, D’Anzi, Brunella, Dai, Ling-Yun, Dai, Xinchen, Dai, Xuwen, De Maria, Antonio, De Filippis, Nicola, De La Taille, Christophe, De Mori, Francesca, De Sio, Chiara, Del Core, Elisa, Deng, Shuangxue, Deng, Wei-Tian, Deng, Zhi, Deng, Ziyan, Dev, Bhupal, Dewen, Tang, Di Micco, Biagio, Ding, Ran, Ding, Siqin, Ding, Yadong, Dong, Haiyi, Dong, Jianing, Dong, Jing, Dong, Lan, Dong, Mingyi, Dong, Xu, Dong, Yipei, Dong, Yubing, Dordevic, Milos, Drewes, Marco, Du, Mingxuan, Du, Mingxuan, Du, Qianqian, Du, Xiaokang, Du, Yanyan, Du, Yong, Du, Yunfei, Duan, Chun-Gui, Duan, Zhe, Dydyshka, Yahor, Egede, Ulrik, Elmetenawee, Walaa, Eo, Yun, Fan, Ka Yan, Fan, Kuanjun, Fan, Yunyun, Fang, Bo, Fang, Shuangshi, Fang, Yuquan, Farilla, Ada, Farinelli, Riccardo, Farooq, Muhammad, Golfe, Angeles Faus, Fazliakhmetov, Almaz, Fei, Rujun, Feng, Bo, Feng, Chong, Feng, Junhua, Feng, Xu, Feng, Zhuoran, ZhuoranFeng, Castillo, Luis Roberto Flores, Forest, Etienne, Fowlie, Andrew, Fox, Harald, Fu, Hai-Bing, Fu, Jinyu, Fuks, Benjamin, Funakoshi, Yoshihiro, Gabrielli, Emidio, Gan, Nan, Gang, Li, Gao, Jie, Gao, Meisen, Gao, Wenbin, Gao, Wenchun, Gao, Yu, Gao, Yuanning, Gao, Zhanxiang, Gao, Yanyan, Ge, Kun, Ge, Shao-Feng, Ge, Zhenwu, Geng, Li-Sheng, Geng, Qinglin, Geng, Chao-Qiang, Ghosh, Swagata, Gioiosa, Antonio, Gladilin, Leonid, Gong, Ti, Gori, Stefania, Gou, Quanbu, Grinstein, Sebastian, Gu, Chenxi, Guillermo, Gerardo, da Costa, Joao Guimaraes, Guo, Dizhou, Guo, Fangyi, Guo, Jiacheng, Guo, Jun, Guo, Lei, Guo, Lei, Guo, Xia, Guo, Xin-Heng, Guo, Xinyang, Guo, Yun, Guo, Yunqiang, Guo, Yuping, Guo, Zhi-Hui, Gutie´rrez-Rodríguez, Alejandro, Ha, Seungkyu, Habib, Noman, Hajer, Jan, Hammer, Francois, Han, Chengcheng, Han, Huayong, Han, Jifeng, Han, Liang, Han, Liangliang, Han, Ruixiong, Han, Yang, Han, Yezi, Han, Yuanying, Han, Tao, Hao, Jiankui, Hao, Xiqing, XiqingHao, He, Chuanqi, He, Dayong, He, Dongbing, He, Guangyuan, He, Hong-Jian, He, Jibo, He, Jun, He, Longyan, He, Xiang, He, Xiao-Gang, He, Zhenqiang, Heinemann, Klaus, Heinemeyer, Sven, Heng, Yuekun, Herna´ndez-Ruíz, María A., Hong, Jiamin, Hor, Yuenkeung, Hou, George W. S., Hou, Xiantao, Hou, Xiaonan, Hou, Zhilong, Hou, Suen, Hu, Caishi, Hu, Chen, Hu, Dake, Hu, Haiming, Hu, Jiagen, Hu, Jun, Hu, Kun, Hu, Shouyang, Hu, Yongcai, Hu, Yu, Hu, Zhen, Hua, Zhehao, Hua, Jianfei, Huang, Chao-Shang, Huang, Fa Peng, Huang, Guangshun, Huang, Jinshu, Huang, Ke, Huang, Liangsheng, Huang, Shuhui, Huang, Xingtao, Huang, Xu-Guang, Huang, Yanping, Huang, Yonggang, Huang, Yongsheng, Huang, Zimiao, Huanyuan, Chen, Huh, Changgi, Hui, Jiaqi, Huo, Lihua, Hussain, Talab, Hwang, Kyuyeong, Ioannisian, Ara, Iqbal, Munawar, Jackson, Paul, Jafarzade, Shahriyar, Jang, Haeun, Jang, Seoyun, Ji, Daheng, Ji, Qingping, Ji, Quan, Ji, Xiaolu, Jia, Jingguang, Jia, Jinsheng, Jia, Xuewei, Jia, Zihang, Jiang, Cailian, Jiang, Han Ren, Jiang, Houbing, Jiang, Jun, Jiang, Xiaowei, Jiang, Xin, Jiang, Xuhui, Jiang, Yongcheng, Jiang, Zhongjian, Jiang, Cheng, Jiao, Ruiqi, Jin, Dapeng, Jin, Shan, Jin, Song, Jin, Yi, Jis, Junji, Jung, Sunghoon, Kacarevic, Goran, Kajfasz, Eric, Kalinovskaya, Lidia, Kampf, Aleksei, Kang, Wen, Kang, Xian-Wei, Kang, Xiaolin, Karmakar, Biswajit, Ke, Zhiyong, Keloth, Rijeesh, Khan, Alamgir, Khanpour, Hamzeh, Khosonthongkee, Khanchai, KhanchaiKhosonthongkee, Kim, Bobae, Kim, Dongwoon, Kim, Mi Ran, Kim, Minsuk, Kim, Sungwon, Kim, On, Klasen, Michael, Ko, Sanghyun, Koop, Ivan, Kornienko, Vitaliy, Kortman, Bryan, Kozlov, Gennady, Kuang, Shiqing, Kumar, Mukesh, Kuo, Chia Ming, Kwok, Tsz Hong, Lagarde, Franc¸ois Sylvain Ren, Lai, Pei-Zhu, Laktineh, Imad, Lan, Xiaofei, Lan, Zuxiu, Lavezzi, Lia, Lee, Justin, Lee, Junghyun, Lee, Sehwook, Lei, Ge, Lemmon, Roy, Leng, Yongxiang, Leung, Sze Ching, Li, Hai Tao, Li, Bingzhi, Li, Bo, Li, Bo, Li, Changhong, Li, Chao, Li, Cheng, Li, Cheng, Li, Chunhua, Li, Cui, Li, Dazhang, Li, Dikai, Li, Fei, Li, Gang, Li, Gang, Li, Gang, Li, Gaosong, Li, Haibo, Li, Haifeng, Li, Hai-Jun, Li, Haotian, Li, Hengne, Li, Honglei, Li, Huijing, Li, Jialin, Li, Jingyi, Li, Jinmian, Li, Jun, Li, Leyi, Li, Liang, Li, Ling, Li, Mei, Li, Meng, Li, Minxian, Li, Pei-Rong, Li, Qiang, Li, Shaopeng, Li, Shenghe, Li, Shu, Li, Shuo, Li, Teng, Li, Tiange, Li, Tong, Li, Weichang, Li, Weidong, Li, Wenjun, Li, Xiaoling, Li, Xiaomei, Li, Xiaonan, Li, Xiaoping, Li, Xiaoting, Li, Xin, Li, Xinqiang, Li, Xuekang, Li, Yang, Li, Yanwei, Li, Yiming, Li, Ying, Li, Ying-Ying, Li, Yonggang, Li, Yonglin, Li, Yufeng, Li, Yuhui, Li, Zhan, Li, Zhao, Li, Zhiji, Li, Tong, Li, Lingfeng, Li, Fei, Liang, Jing, Liang, Jinhan, Liang, Zhijun, Liao, Guangrui, Liao, Hean, Liao, Jiajun, Liao, Libo, Liao, Longzhou, Liao, Yi, Liao, Yipu, Limphirat, Ayut, AyutLimphirat, Lin, Tao, Lin, Weiping, Lin, Yufu, Lin, Yugen, Liu, Beijiang, Liu, Bo, Liu, Danning, Liu, Dong, Liu, Fu-Hu, Liu, Hongbang, Liu, Huangcheng, Liu, Hui, Liu, Huiling, Liu, Jia, Liu, Jia, Liu, Jiaming, Liu, Jianbei, Liu, Jianyi, Liu, Jingdong, Liu, Jinhua, Liu, Kai, Liu, Kang, Liu, Kun, Liu, Mengyao, Liu, Peng, Liu, Pengcheng, Liu, Qibin, Liu, Shan, Liu, Shidong, Liu, Shuang, Liu, Shubin, Liu, Tao, Liu, Tao, Liu, Tong, Liu, Wei, Liu, Xiang, Liu, Xiao-Hai, Liu, Xiaohui, Liu, Xiaoyu, Liu, Xin, Liu, Xinglin, Liu, Xingquan, Liu, Yang, Liu, Yanlin, Liu, Yao-Bei, Liu, Yi, Liu, Yiming, Liu, Yong, Liu, Yonglu, Liu, Yu, Liu, Yubin, Liu, Yudong, Liu, Yulong, Liu, Zhaofeng, Liu, Zhen, Liu, Zhenchao, Liu, Zhi, Liu, Zhi-Feng, Liu, Zhiqing, Liu, Zhongfu, Liu, Zuowei, Liu, Mia, Liu, Zhen, Liu, Xiaoyang, Lou, Xinchou, Lu, Cai-Dian, Lu, Jun-Xu, Lu, Qiu Zhen, Lu, Shang, Lu, Shang, Lu, Wenxi, Lu, Xiaohan, Lu, Yunpeng, Lu, Zhiyong, Lu, Xianguo, Lu, Wei, Lubsandorzhiev, Bayarto, Lubsandorzhiev, Sultim, Lukanov, Arslan, Luo, Jinliang, Luo, Tao, Luo, xiaoan, Luo, Xiaofeng, Luo, Xiaolan, Lv, Jindong, Lyu, Feng, Lyu, Xiao-Rui, Lyu, Kun-Feng, Ma, Ande, Ma, Hong-Hao, Ma, Jun-Li, Ma, Kai, Ma, Lishuang, Ma, Na, Ma, Renjie, Ma, Weihu, Ma, Xinpeng, Ma, Yanling, Ma, Yan-Qing, Ma, Yongsheng, Ma, Zhonghui, Ma, Zhongjian, Ma, Yang, Maity, Mousam, Mao, Lining, Mao, Yanmin, Mao, Yaxian, Martens, Aure´lien, Maria, Caccia Massimo Luigi, Matsumoto, Shigeki, Mellado, Bruce, Meloni, Davide, Men, Lingling, Meng, Cai, Meng, Lingxin, Mi, Zhenghui, Miao, Yuhui, Migliorati, Mauro, Ming, Lei, Mitsou, Vasiliki A., Monaco, Laura, Moraes, Arthur, Mosala, Karabo, Moursy, Ahmad, Mu, Lichao, Mu, Zhihui, Muchnoi, Nickolai, Muenstermann, Daniel, Muenstermann, Daniel, Munbodh, Pankaj, Murray, William John, Nanni, Jérôme, Nanzanov, Dmitry, Nie, Changshan, Nikitin, Sergei, Ning, Feipeng, Ning, Guozhu, Niu, Jia-Shu, Niu, Juan-Juan, Niu, Yan, Nkadimeng, Edward Khomotso, Ohmi, Kazuhito, Oide, Katsunobu, Okawa, Hideki, Ouchemhou, Mohamed, Ouyang, Qun, Paesani, Daniele, Pagani, Carlo, Paganis, Stathes, Pakuza, Collette, Pan, Jiangyang, Pan, Juntong, Pan, Tong, Pan, Xiang, Panda, Papia, Pandey, Saraswati, Pandurovic, Mila, Paparella, Rocco, Pasechnik, Roman, Passemar, Emilie, Pei, Hua, Peng, Xiaohua, Peng, Xinye, Peng, Yuemei, Ping, Jialun, Ping, Ronggang, Adhya, Souvik Priyam, Qi, Baohua, Qi, Hang, Qi, Huirong, Qi, Ming, Qian, Sen, Qian, Zhuoni, Qiao, Congfeng, Qin, Guangyou, Qin, Jiajia, Qin, Laishun, Qin, Liqing, Qin, Qin, Qin, Xiaoshuai, Qin, Zhonghua, Qu, Guofeng, Racioppi, Antonio, Ramsey-Musolf, Michael, Raza, Shabbar, Rekovic, Vladimir, Ren, Jing, Reuter, Ju¨rgen, Robens, Tania, Rossi, Giancarlo, Ruan, Manqi, Ruan, Manqi, Rumyantsev, Leonid, Ryu, Min Sang, Sadykov, Renat, Sang, Minjing, Sanz-Cillero, Juan Jose´, Saur, Miroslav, Savla, Nishil, Schmidt, Michael A., Sertore, Daniele, Settles, Ron, Sha, Peng, Shao, Ding-Yu, Shao, Ligang, Shao, Hua-Sheng, She, Xin, Shen, Chuang, Shen, Hong-Fei, Shen, Jian-Ming, Shen, Peixun, Shen, Qiuping, Shen, Zhongtao, Sheng, Shuqi, Shi, Haoyu, Shi, Hua, Shi, Qi, Shi, Shusu, Shi, Xiaolei, Shi, Xin, Shi, Yukun, Shi, Zhan, Shipsey, Ian, Shiu, Gary, Shu, Chang, Si, Zong-Guo, Sidorenkov, Andrei, Smiljanić, Ivan, Song, Aodong, Song, Huayang, Song, Jiaojiao, Song, Jinxing, Song, Siyuan, Song, Weimin, Song, Weizheng, Song, Zhi, Sourav, Shashwat, Spruzzola, Paolo, Su, Feng, Su, Shengsen, Su, Wei, Su, Shufang, Sui, Yanfeng, Sui, Zexuan, Sullivan, Michael, Sun, Baiyang, Sun, Guoqiang, Sun, Hao, Sun, Hao-Kai, Sun, Junfeng, Sun, Liang, Sun, Mengcheng, Sun, Pengfei, Sun, Sichun, Sun, Xianjing, Sun, Xiaohu, Sun, Xilei, Sun, Xingyang, Sun, Xin-Yuan, Sun, Yanjun, Sun, Yongzhao, Sun, Yue, Sun, Zheng, Sun, Zheng, Suwonjandee, Narumon, Eldin, Elsayed Tag, Tan, Biao, Tang, Bo, Tang, Chuanxiang, Tang, Gao, Tang, Guangyi, Tang, Jian, Tang, Jingyu, Tang, Liang, Tang, Ying’Ao, Tao, Junquan, Tawfik, Abdel Nasser, Taylor, Geoffrey, Telnov, Valery, Tian, Saike, Torre, Riccardo, Trzaska, Wladyslaw Henryk, Tsybychev, Dmitri, Tu, Yanjun, Tuo, Shengquan, Tytgat, Michael, Islam, Ghalib Ul, Ushakov, Nikita, Valencia, German, Velthuis, Jaap, Vicini, Alessandro, Vickey, Trevor, Vidakovic, Ivana, Videau, Henri, Volkas, Raymond, Voronin, Dmitry, Vukasinovic, Natasa, Wan, Xia, Wan, Xuying, Wang, Xiao, Wang, Anqing, Wang, Bin, Wang, Chengtao, Wang, Chuanye, Wang, Ci, Wang, Dayong, Wang, Dou, Wang, En, Wang, Fei, Wang, Fei, Wang, Guanwen, Wang, Guo-Li, Wang, Haijing, Wang, Haolin, Wang, Jia, Wang, Jian, Wang, Jianchun, Wang, Jianli, Wang, Jiawei, Wang, Jin, Wang, Jin-Wei, Wang, Joseph, Wang, Kechen, Wang, Lechun, Wang, Lei, Wang, Liguo, Wang, Lijiao, Wang, Lu, Wang, Meng, Wang, Na, Wang, Pengcheng, Wang, Qian, Wang, Qun, Wang, Shu Lin, Wang, Shudong, Wang, Taofeng, Wang, Tianhong, Wang, Tianyang, Wang, Tong, Wang, Wei, Wang, Wei, Wang, Xiaolong, Wang, Xiaolong, Wang, Xiaoning, Wang, Xiao-Ping, Wang, Xiongfei, Wang, Xujian, Wang, Yaping, Wang, Yaqian, Wang, Yi, Wang, Yiao, Wang, Yifang, Wang, Yilun, Wang, Yiwei, Wang, You-Kai, Wang, Yuanping, Wang, Yuexin, Wang, Yuhao, Wang, Yu-Ming, Wang, Yuting, Wang, Zhen, Wang, Zhigang, Wang, Weiping, Wang, Zeren Simon, Wang, Biao, Wang, Hui, Wang, Lian-Tao, Wang, Zihui, Wang, Zirui, Wang, Jia, Wang, Tong, Wei, Daihui, Wei, Shujun, Wei, Wei, Wei, Xiaomin, Wei, Yuanyuan, Wei, Yingjie, Wen, Liangjian, Wen, Xuejun, Wen, Yufeng, White, Martin, Williams, Peter, Wolffs, Zef, Womersley, William John, Wu, Baona, Wu, Bobing, Wu, Guanjian, Wu, Jinfei, Wu, Lei, Wu, Lina, Wu, Linghui, Wu, Minlin, Wu, Peiwen, Wu, Qi, Wu, Qun, Wu, Tianya, Wu, Xiang, Wu, Xiaohong, Wu, Xing-Gang, Wu, Xuehui, Wu, Yaru, Wu, Yongcheng, Wu, Yuwen, Wu, Zhi, Wu, Xin, Xia, Lei, Xia, Ligang, Xia, Shang, Xiang, Benhou, Xiang, Dao, Xiang, Zhiyu, Xiao, Bo-Wen, Xiao, Chu-Wen, Xiao, Dong, Xiao, Guangyan, Xiao, Han, Xiao, Meng, Xiao, Ouzheng, Xiao, Rui-Qing, Xiao, Xiang, Xiao, Yichen, Xiao, Ying, Xiao, Yu, Xiao, Yunlong, Xiao, Zhenjun, Xiao, Hengyuan, Xie, Nian, Xie, Yuehong, Xin, Tianmu, Xing, Ye, Xing, Zhizhong, Xu, Da, Xu, Fang, Xu, Fanrong, Xu, Haisheng, Xu, Haocheng, Xu, Ji, Xu, Miaofu, Xu, Qingjin, Xu, Qingnian, Xu, Wei, Xu, Wei, Xu, Weixi, Xu, Xinping, Xu, Zhen, Xu, Zijun, Xu, Zehua, Xu, Yaoyuan, Xue, Feifei, Yan, Baojun, Yan, Bin, Yan, Fen, Yan, Fucheng, Yan, Jiaming, Yan, Liang, Yan, Luping, Yan, Qi-Shu, Yan, Wenbiao, Yan, Yupeng, Yan, Luping, Yan, Haoyue, Yang, Dong, Yang, Fengying, Yang, Guicheng, Yang, Haijun, Yang, Jin Min, Yang, Jing, Yang, Lan, Yang, Li, Yang, Li Lin, Yang, Lili, Yang, Litao, Yang, Mei, Yang, Qiaoli, Yang, Tiansen, Yang, Xiaochen, Yang, Yingjun, Yang, Yueling, Yang, Zhengyong, Yang, Zhenwei, Yang, Youhua, Yang, Xiancong, Yao, De-Liang, Yao, Shi, Ye, Lei, Ye, Lingxi, Ye, Mei, Ye, Rui, Ye, Rui, Ye, Yecheng, Yermolchyk, Vitaly, Yi, Kai, Yi, Li, Yi, Yang, Yin, Di, Yin, Peng-Fei, Yin, Shenghua, Yin, Ze, Yin, Zhongbao, Yinhong, Zhang, Yoo, Hwi Dong, You, Zhengyun, Young, Charles, Yu, Boxiang, Yu, Chenghui, Yu, Fusheng, Yu, Jie-Sheng, Yu, Jinqing, Yu, Lingda, Yu, Zhao-Huan, Yu, Felix, Yu, Bingrong, Yuan, Changzheng, Yuan, Li, Yuan, Xing-Bo, Yuan, Youjin, Yue, Junhui, Yue, Qian, Yue, Baobiao, Zaib, Un Nisa, Zanzottera, Riccardo, Zeng, Hao, Zeng, Ming, Zhai, Jian, Zhai, Jiyuan, Zhai, Xin Zhe, Zhan, Xi-Jie, Zhang, Ben-Wei, Zhang, Bolun, Zhang, Di, Zhang, Guangyi, Zhang, Hao, Zhang, Hong-Hao, Zhang, Huaqiao, Zhang, Hui, Zhang, Jialiang, Zhang, Jianyu, Zhang, Jianzhong, Zhang, Jiehao, Zhang, Jielei, Zhang, Jingru, Zhang, Jinxian, Zhang, Junsong, Zhang, Junxing, Zhang, Lei, Zhang, Lei, Zhang, Liang, Zhang, Licheng, Zhang, Liming, Zhang, Linhao, Zhang, Luyan, Zhang, Mengchao, Zhang, Rao, Zhang, Shulei, Zhang, Wan, Zhang, Wenchao, Zhang, Xiangzhen, Zhang, Xiaomei, Zhang, Xiaoming, Zhang, Xiaoxu, Zhang, Xiaoyu, Zhang, Xuantong, Zhang, Xueyao, Zhang, Yang, Zhang, Yang, Zhang, Yanxi, Zhang, Yao, Zhang, Ying, Zhang, Yixiang, Zhang, Yizhou, Zhang, Yongchao, Zhang, Yu, Zhang, Yuan, Zhang, Yujie, Zhang, Yulei, Zhang, Yumei, Zhang, Yunlong, Zhang, Zhandong, Zhang, Zhaoru, Zhang, Zhen-Hua, Zhang, Zhenyu, Zhang, Zhichao, Zhang, Zhi-Qing, Zhang, Zhuo, Zhang, Zhiqing, Zhang, Cong, Zhang, Tianliang, Zhang, Luyan, Zhao, Guang, Zhao, Hongyun, Zhao, Jie, Zhao, Jingxia, Zhao, Jingyi, Zhao, Ling, Zhao, Luyang, Zhao, Mei, Zhao, Minggang, Zhao, Mingrui, Zhao, Qiang, Zhao, Ruiguang, Zhao, Tongxian, Zhao, Yaliang, Zhao, Ying, Zhao, Yue, Zhao, Zhiyu, Zhao, Zhuo, Zhemchugov, Alexey, Zheng, Hongjuan, Zheng, Jinchao, Zheng, Liang, Zheng, Ran, zheng, shanxi, Zheng, Xu-Chang, Zhile, Wang, Zhong, Weicai, Zhong, Yi-Ming, Zhou, Chen, Zhou, Daicui, Zhou, Jianxin, Zhou, Jing, Zhou, Jing, Zhou, Ning, Zhou, Qi-Dong, Zhou, Shiyu, Zhou, Shun, Zhou, Sihong, Zhou, Xiang, Zhou, Xingyu, Zhou, Yang, Zhou, Yong, Zhou, Yu-Feng, Zhou, Zusheng, Zhou, Demin, Zhu, Dechong, Zhu, Hongbo, Zhu, Huaxing, Zhu, Jingya, Zhu, Kai, Zhu, Pengxuan, Zhu, Ruilin, Zhu, Xianglei, Zhu, Yingshun, Zhu, Yongfeng, Zhuang, Xiao, Zhuang, Xuai, Zobov, Mikhail, Zong, Zhanguo, Zou, Cong, and Zou, Hongying

Published
2024
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4. Booster Free From Spin Resonance For Future 100~km-scale Circular e$^{+}$e$^{-}$ Colliders

Author

Chen, Tao, Duan, Zhe, Ji, Daheng, and Wang, Dou

Subjects
Physics - Accelerator Physics
Abstract

Acceleration of polarized electron~(positron) beams in a booster synchrotron may suffer from depolarization due to crossings of many spin depolarization resonances, which could limit its applications. We have studied the spin depolarization resonance structure of a 100~km scale booster lattice of the Circular Electron Positron Collider~(CEPC). The lattice has 8 arc regions with hundreds of FODO cells, interleaved with straight sections, which leads to a high periodicity. Our analysis shows the contributions to the strength of intrinsic and imperfection spin resonances add up coherently near the super strong resonances beyond 120 GeV, but mostly cancel out and result in generally weak resonance strengths at lower beam energies. Detailed simulations confirm that beam polarization can be mostly maintained in the fast acceleration to 45.6 GeV and 80 GeV, but severe depolarization may occur at even higher energies. This study suggests the possibility of acceleration of polarized electron~(positron) beams to ultra-high beam energies without the help of Siberian snakes, and supports injecting highly polarized beams into the collider rings as an attractive solution for resonant depolarization measurements and longitudinal polarized colliding beam experiments for future 100~km scale circular e$^{+}$e$^{-}$ colliders., Comment: 19 pages, 13 figures

Published
2023
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7. Equilibrium electron beam parameters of the High Energy Photon Source

Author

Xu, Haisheng, Meng, Cai, Peng, Yuemei, Tian, Saike, Wang, Na, Cui, Xiaohao, Du, Chongchong, Duan, Zhe, Guo, Yuanyuan, He, Ping, Huang, Xiyang, Ji, Daheng, Ji, Hongfei, Jiao, Yi, Li, Jingyi, Li, Nan, Li, Xiaoyu, Lu, Xiaohan, Liang, Pengfei, Pan, Weimin, Qu, Huamin, Wang, Bin, Wang, Jiuqing, Wei, Yuanyuan, Wan, Jinyu, Xu, Gang, Yan, Fang, Yu, Chenghui, Yue, Sen, Zhang, Xiang, and Zhao, Yaliang

Published
2023
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8. Detection Method of Digital Beam Position Monitor Based on Histogram

Author

TANG Xuhui;GAO Guodong;WEI Shujun;CAO Jianshe;DU Yaoyao;LIU Zhi;YE Qiang;MA Huizhou;HE Jun;JI Daheng; YANG Jing;LI Yukun;SUI Yanfeng;YUE Junhui

Subjects
digital beam position monitor processer, analog to digital converter, histogram, clock jitter, signal-to-noise ratio, Nuclear engineering. Atomic power, TK9001-9401, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

The digital beam position monitor processer (DBPM) is one of the important beam diagnosis equipments in particle accelerator and it will be massproduced during the construction of Upgrade of Beijing Electron Positron Collider (BEPCⅡ) and high energy photon source (HEPS), which brings great challenges to the testing work. The analog to digital converter (ADC) module is an essential component of DBPM and its conversion accuracy determines the resolution of the beam position measurement. Therefore, in order to ensure that these two projects meet the design targets, it is necessary to test the ADC performance. Its main observation object includes the phaselocked loop, sampling clock jitter, signaltonoise ratio (SNR), etc. To meet the batch test requirements of the selfdeveloped DBPM ADC, a method of testing the sampling performance based on the histogram was proposed. The histogram’s test principle is that the shape of the histogram can detect whether the sampling clock is phaselocked to the input signal, the boundary value of the histogram reflects the amplitude of the input signal to judge if the ADC is saturated, and the average and standard deviation of the data peak on the histogram can be used to calculate the clock jitter that conforms to the normal distribution. In this paper, the mathematical relation between the statistics of each data peak, clock jitter, and SNR was simulated by MATLAB in the situation of phaselocking. The separation algorithm was designed to obtain the data corresponding to each peak of the histogram and compute the clock jitter and SNR. An integrated test platform was built and experiments were carried out to verify the testing effect of the histogram method. The experimental results show that when the amount of sampling data is appropriate, the histogram method can complete the test quickly and accurately, and the measurement result is close to that of the highperformance phase noise analyzer. The clock jitter measurement error is less than 200 fs, the SNR measurement error is less than 2 dB, and the entire test duration is less than 1 min, which fulfills large volume testing demands. Compared with the manual instrument measure method, the histogram approach is simpler and lower cost to test with the same order of magnitude accuracy and has been implemented by programming to reduce labor intensity. The test program has been implemented in the automatic test platform and used to batch detection of DBPM products successfully.

Published
2022

11. Design and implementation of network topology for HEPS fast orbit feedback system

Author

GAO Guodong, LIU Peng, LONG Fengli, JI Daheng, YE Qiang, DU Yaoyao, LIU Zhi, SUI Yanfeng, YUE Junhui, TANG Xuhui, WEI Shujun, and CAO Jianshe

Subjects
heps, fast orbit feedback, fpga, high speed data transmission, digital signal processing, Nuclear engineering. Atomic power, TK9001-9401
Abstract

BackgroundHEPS (High Energy Photon Source) needs to control the beam orbit change within 10% of the cluster size within a certain frequency. In order to meet the beam orbit stability requirements in HEPS, it is necessary to establish a fast orbit feedback (FOFB) system.PurposeThis study aims to design and implement an effective feedback bandwidth of FOFB system that is greater than 500 Hz, and the delay of the whole system is less than 160 µs.MethodsBased on this requirement, a two-layer communication of loop centralized computing system network topology was designed and implemented for FOFB system of HEPS. And on this basis, the FPGA (field-programmable gate array) firmware algorithm of the signaling pathway of FOFB system was realized, including beam position acquisition, loop data transmission, FOFB algorithm, power control interface and the testing logic.ResultsThe measurement and analysis results show that each module in the data transmission link of the FOFB system can be used normally, and the total delay time of the system is about 140.46 µs, which has reached the intended design target.ConclusionsThe FOFB design of this study lays a foundation for the future construction, optimization and debugging of FOFB system on HEPS storage ring with good flexibility and scalability, providing a feasible solution for the future establishment of fast orbit feedback system in other storage rings.

Published
2023
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12. A new modular framework for high-level application development at HEPS

Author

Lu, Xiaohan, primary, Zhao, Yaliang, additional, Ji, Hongfei, additional, Jiao, Yi, additional, Li, Jingyi, additional, Li, Nan, additional, Meng, Cai, additional, Peng, Yuemei, additional, Ji, Daheng, additional, Wei, Yuanyuan, additional, Xu, Haisheng, additional, Pan, Weimin, additional, and Xu, Gang, additional

Published
2024
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15. Longitudinally Polarized Colliding Beams at the CEPC

Author

Duan, Zhe, Chen, Tao, Gao, Jie, Ji, Daheng, Li, Xiaoping, Wang, Dou, Wang, Jiuqing, Wang, Yiwei, and Xia, Wenhao

Subjects
Accelerator Physics, Polarization and energy calibration
Abstract

This paper reports the recent progress in the design studies of longitudinally polarized colliding beams for CEPC. The overall design concept is outlined, followed by more detailed descriptions of the polarized beam generation, polarization maintenance in the booster, and spin rotators in the collider rings., Proceedings of the 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders, eeFACT2022, Frascati, Italy

Published
2022
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16. CEPC Booster Lattice Design

Author

Wang, Dou, Cui, Xiaohao, Gao, Jie, Ji, Daheng, Li, Meng, Liu, Yudong, Meng, Cai, Peng, Yuemei, Yu, Chenghui, Zhai, Jiyuan, and Zhang, Yuan

Subjects
Optics & Beam Dynamics, Accelerator Physics
Abstract

The CEPC booster provides electron and positron beams to the collider at different energies. The newest booster design is consistent with the TDR higher luminosity goals for four energy modes. The emittance of booster is reduced significantly in order to match the lower emittance of collider in TDR. Both FODO structure and TME structure was studied for booster design. A lot of efforts are made to overcome the difficulty of error sensitivity for the booster and hence the dynamic aperture with errors can fulfill the requirements at all energy modes. Also, the combined magnets scheme (B+S) are proposed to minimize the cost for magnets and power supplies. The design status of CEPC booster in TDR including parameters, optics and dynamic aperture is discussed in this paper., Proceedings of the 65th ICFA Advanced Beam Dynamics Workshop on High Luminosity Circular e+e- Colliders, eeFACT2022, Frascati, Italy

Published
2022
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17. Progress of Lattice Design and Physics Studies on the High Energy Photon Source

Author

Jiao, Yi, Bai, Yu, Cui, Xiaohao, Du, Chongchong, Duan, Zhe, Guo, Yuan, He, Ping, Huang, Xiyang, Ji, Daheng, Ji, Hongfei, Jiang, Shichang, Li, Biaobin, Li, Chao, Li, Jingyi, Li, Nan, Li, Xiao Yu, Liang, Pengfei, Lu, Xiaohan, Meng, Cai, Pan, Weimin, Peng, Yuemei, Qin, Qing, Qu, Huamin, Tian, Saike, Wan, Jinyu, Wang, Bin, Wang, Jiuqing, Wang, Na, Wei, Yuanyuan, Xu, Gang, Xu, Haisheng, Yan, Fang, Yu, Chenghui, and Zhao, Yaliang

Subjects
MC2: Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is a 34-pm, 1360-m storage ring light source being built in the suburb of Beijing, China. The HEPS construction started in mid-2019. While the physics design has been basically determined, modifications on the HEPS accelerator physics design have been made since 2019, in order to deal with challenges emerging from the technical and engineering designs. In this paper, we will introduce the new storage ring lattice and injector design, and also present updated results of related physics issues, including impedance and collective effects, lattice calibration, insertion device effects, injection design studies, etc., Proceedings of the 12th International Particle Accelerator Conference, IPAC2021, Campinas, SP, Brazil

Published
2021
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20. Design and beam dynamics of the CEPC booster

Author

Wang, Dou, primary, Yu, Chenghui, additional, Cui, Xiaohao, additional, Ji, Daheng, additional, Liu, Yudong, additional, Zhai, Jiyuan, additional, Wang, Na, additional, Zhang, Yuan, additional, and Gao, Jie, additional

Published
2020
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21. Beam Dynamics Study in the HEPS Storage Ring

Author

Jiao, Yi, Cui, Xiaohao, Duan, Zhe, Guo, Yuan, He, Ping, Huang, Xiyang, Ji, Daheng, Ji, Hongfei, Li, Chao, Li, Jingyi, Li, Xiao Yu, Meng, Cai, Peng, Yuemei, Qin, Qing, Tian, Saike, Wang, Jiuqing, Wang, Na, Wei, Yuanyuan, Xu, Gang, Xu, Haisheng, Yan, Fang, Yu, Chenghui, and Zhao, Yaliang

Subjects
MC5: Beam Dynamics and EM Fields, Physics::Accelerator Physics, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is the first high-energy diffraction-limited storage ring (DLSR) light source to be built in China, with a natural emittance of a few tens of pm rad and a circumference of 1360.4 m. After 10 years’ evolution, the accelerator physics design of the HEPS has been basically determined, with the ring consisting of 48 hybrid-7BAs with anti-bends and super-bends. This paper will discuss the accelerator physics studies of the HEPS storage ring, covering issues of lattice design, nonlinear optimization, collective effects, error correction, insertion devices, etc., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia

Published
2019
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22. Simulation of Model Independent Analysis to HEPS Storage Ring

Author

Ji, Daheng, Jiao, Yi, Ma, Huizhou, and Yue, Junhui

Subjects
Physics::Medical Physics, Physics::Accelerator Physics, MC2: Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

Model Independent Analysis (MIA) is a beam analysis method applied for Turn-by-Turn (TBT) Beam Position Monitor (BPM) data. To develop the commissioning method of the HEPS storage ring, we simulate application of MIA on HEPS storage error model to measure and cor-rect the optics parameters. Difficulties and limitations of the MIA method are also discussed., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia

Published
2019
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23. The Status of CEPC

Author

Yu, Chenghui, Bai, Sha, Bian, Tianjian, Cui, Xiaohao, Gao, Jie, Geng, Huiping, Gong, Dianjun, Ji, Daheng, Liu, Yudong, Meng, Cai, Qin, Qing, Wang, Dou, Wang, Na, Wang, Yiwei, Wei, Yuanyuan, Zhai, Jiyuan, Zhang, Yuan, Zheng, Hongjuan, and Zhu, Yingshun

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Physics::Accelerator Physics, High Energy Physics::Experiment, ee collider overview, Accelerator Physics
Abstract

Circular electron-positron collider (CEPC) is a dedi-cated project proposed by China to research the Higgs boson. The collider ring provides e⁺ e⁻ collision at two interaction points (IP). The luminosity for the Higgs mode at the beam energy of 120GeV is 3*10³⁴ cm⁻²s⁻¹ at each IP while the synchrotron radiation (SR) power per beam is 30MW. Furthermore, CEPC is compatible with W and Z experiments, for which the beam ener-gies are 80 GeV and 45.5 GeV respectively. The lumi-nosity at the Z mode is higher than 1.7*10³⁵ cm⁻²s⁻¹ per IP. Top-up operation is available during the data taking of high energy physics. The status of CEPC will be introduced in detail in this paper., Proceedings of the 62th ICFA ABDW on High Luminosity Circular e$^+$e$^-$ Colliders, eeFACT2018, Hong Kong, China

Published
2019
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24. Status of Circular Electron-Positron Collider and Super Proton-Proton Collider

Author

Yu, Chenghui, Bai, Sha, Cui, Xiaohao, Gao, Jie, Geng, Huiping, Gong, Dianjun, Ji, Daheng, Liu, Yudong, Meng, Cai, Qin, Qing, Tang, Jingyu, Wang, Dou, Wang, Na, Wang, Yiwei, Wei, Yuanyuan, Zhai, Jiyuan, Zhang, Yuan, Zheng, Hongjuan, and Zhu, Yingshun

Subjects
MC1: Circular and Linear Colliders, Astrophysics::High Energy Astrophysical Phenomena, Physics::Accelerator Physics, High Energy Physics::Experiment, Accelerator Physics
Abstract

Circular electron-positron collider (CEPC) is a dedi-cated project proposed by China to research the Higgs boson. The collider ring provides e⁺ e⁻ collision at two interaction points (IP). The luminosity for the Higgs mode at the beam energy of 120GeV is 3*10³⁴ cm⁻²s⁻¹ at each IP while the synchrotron radiation (SR) power per beam is 30MW. Furthermore, CEPC is compatible with W and Z experiments, for which the beam energies are 80 GeV and 45.5 GeV respectively. The luminosity at the Z mode is higher than 1.7*10³⁵ cm⁻²s⁻¹ per IP. Top-up operation is available during the data taking of high energy physics. Super Proton-Proton Collider (SPPC) is envisioned to be an extremely powerful machine, with centre mass energy of 75 TeV, a nominal luminosity of 1.0*10³⁵ cm⁻²s⁻¹ per IP, and an integrated luminosity of 30 ab⁻¹ assuming 2 interaction points and ten years of running. The status of CEPC and SPPC will be introduced in detail in this paper., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia

Published
2019
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25. Progress of Lattice Design and Physics Studies on the High Energy Photon Source

Author

Jiao, Yi, Cui, Xiaohao, Duan, Zhe, Guo, Yuan, He, Ping, Huang, Xiyang, Ji, Daheng, Li, Chao, Li, Jingyi, Li, Xiao Yu, Meng, Cai, Peng, Yuemei, Qin, Qing, Tian, Saike, Wang, Jiuqing, Wang, Na, Wei, Yuanyuan, Xu, Gang, Xu, Haisheng, Yan, Fang, Yu, Chenghui, and Zhao, Yaliang

Subjects
MC2: Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is an ul-tralow-emittance, kilometer-scale storage ring light source to be built in China. In this paper we will introduce the progress of the physics design and related studies of HEPS over the past year, covering issues in storage ring lattice design, injection and injector design, insertion device effects, error study and lattice calibration, collective effects, etc., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia

Published
2019
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26. Different Optics within Large Energy Region at BEPCII

Author

Yu, Chenghui, Bai, Yu, Du, Chongchong, Duan, Zhe, Guo, Yuan, Ji, Daheng, Jiang, Shichang, Jiao, Yi, Peng, Yuemei, Qin, Qing, Sun, Yuansheng, Tian, Saike, Wang, Jiuqing, Wang, Na, Wang, Xinhao, Wei, Yuanyuan, Wen, Xuemei, Wu, Jin, Xing, Jun, Xu, Gang, Zhang, Chuang, and Zhang, Yuan

Subjects
Astrophysics::High Energy Astrophysical Phenomena, High Energy Physics::Experiment, Nuclear Experiment, Optics+dynamics, Accelerator Physics
Abstract

BEPCII is designed at the beam energy of 1.89 GeV. According to the requirements of high energy physics, BEPCII has been operated in the energy region from 1.0 GeV to 2.3 GeV since 2009. The energy region is quite large so that it is very important to select optics for the optimized luminosity. Different optics within different energy region at BEPCII will be introduced in detail in this paper., Proceedings of the 62th ICFA ABDW on High Luminosity Circular e$^+$e$^-$ Colliders, eeFACT2018, Hong Kong, China

Published
2019
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27. Simulation of Injection Efficiency for the High Energy Photon Source

Author

Duan, Zhe, Chen, Jinhui, Guo, Yuan, Ji, Daheng, Jiao, Yi, Meng, Cai, Peng, Yuemei, and Xu, Gang

Subjects
Physics::Accelerator Physics, MC2: Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

A ’high-energy accumulation’ scheme [1] was proposed to deliver the full charge bunches for the swap-out injec- tion of the High Energy Photon Source. In this scheme, the depleted storage ring bunches are recovered via merging with small charge bunches in the booster, before being refilled into the storage ring. In particular, the high charge bunches are transferred twice between the storage ring and the booster, and thus it is essential to maintain a near per- fect transmission efficiency in the whole process. In this paper, major error effects affecting the transmission efficiency are analyzed and their tolerances are summarized, injection simulations indicate a satisfactory transmission efficiency is achievable for the present baseline lattice., Proceedings of the 10th Int. Particle Accelerator Conf., IPAC2019, Melbourne, Australia

Published
2019
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28. Design and Beam Dynamics of the CEPC Booster

Author

Wang, Dou, Cui, Xiaohao, Gao, Jie, Ji, Daheng, Liu, Yudong, Meng, Cai, Wang, Na, Yu, Chenghui, Zhai, Jiyuan, and Zhang, Yuan

Subjects
Physics::Accelerator Physics, High Energy Physics::Experiment, Injector and injection, Accelerator Physics
Abstract

The CEPC booster needs to provide electron and positron beams to the collider at different energy with required injection speed. A 10 GeV linac is adopted as the injector for CDR. Then the beam energy is accelerated to specific energy according to three modes of CEPC collider ring (H, W and Z). The geometry of booster is designed carefully in order to share the same tunnel with collider. The design status of booster including parameters, optics and dynamic aperture is discussed in this paper., Proceedings of the 62th ICFA ABDW on High Luminosity Circular e$^+$e$^-$ Colliders, eeFACT2018, Hong Kong, China

Published
2019
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29. Ground Motion Measurement and Analysis for HEPS

Author

Yan, Fang, Duan, Zhe, Ji, Daheng, Jiao, Yi, Wang, Zhizhuo, Wei, Yuanyuan, and Xu, Gang

Subjects
A24 Accelerators and Storage Rings, Other, Physics::Accelerator Physics, 01 Circular and Linear Colliders, Accelerator Physics
Abstract

HEPS have very challenging beam stability require-ments. Special cares are mandatory in developing site vibration specifications, stable building design concepts, and passive and active ways to minimize effects on the stability of the photon beam and critical accelerator and beamline components caused by ambient ground motion sources. However, among all these work, reasonable as-sessment of the vibration induced beam instability has to be the first step. This paper will focuses on the measure-ment results of the ground motion on HEPS site, the es-tablishment of reasonable beam dynamic models, the influences of ground motion to the beam of main ring., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018
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30. Design Study of the HEPS Booster Design

Author

Peng, Yuemei, Duan, Zhe, Guo, Yuan, Ji, Daheng, Jiao, Yi, Li, Jingyi, Meng, Cai, Tian, Saike, Xu, Gang, and Xu, Haisheng

Subjects
Beam dynamics, Physics::Accelerator Physics, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is a 6GeV ultra-low emittance light source proposed to be built in Beijing. It will utilise a full energy booster synchrotron operating at a frequency of 1Hz as its injector. For meeting the requirement of high charge when using swap-out mode, the booster need to have the ability of beam ac-cumulation. In this paper, a FODO lattice with 4 dispersion-free straight sections is presented., Proceedings of the 13th Symposium on Accelerator Physics, SAP2017, Jishou, China

Published
2018
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31. Investigation of Regulation Plan for the Vibration Utility Equipment of HEPS

Author

Yan, Fang, Ji, Daheng, Jiang, Zhiqiang, Jiao, Yi, Lai, Longwei, Li, Chunhua, Sun, Qilong, Wang, Zhizhuo, and Xu, Gang

Subjects
Physics::Accelerator Physics, Accelerators, Accelerator Physics
Abstract

For the third or fourth generation synchrotron light sources, the brilliance of the x-ray beam is 2 to 3 order higher than other generations, and in the meanwhile the beam emittance is at least one order smaller. To ensure the stability of the beam, the vibration caused beam motion is usually controlled to be within 10% of the RMS beam size. Thus the smaller beam emittance is, more restrict of the regulation plan to the vibration sources should be. Inside of the light source site, one major vibration source is the utility equipment such as water pump, compressors and so on. There are two controlling approaches for the vibration amplitude of those sources, one is damping, and another way is decay. However reasonable specification is the key of the controlling method. This work will present the detailed establish process of the regulation plan for HEPS in China., Proceedings of the Mechanical Eng.~Design of Synchrotron Radiation Equipment and Instrumentation, MEDSI2018, Paris, France

Published
2018
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32. Progress of Lattice Design and Physics Studies on the High Energy Photon Source

Author

Xu, Gang, Cui, Xiaohao, Duan, Zhe, Guo, Yuan, Ji, Daheng, Jiao, Yi, Li, Jingyi, Li, Xiao Yu, Meng, Cai, Peng, Yuemei, Qin, Qing, Tian, Saike, Wang, Jiuqing, Wang, Na, Wei, Yuanyuan, Xu, Haisheng, Yan, Fang, Yu, Chenghui, and Zhao, Yaliang

Subjects
Physics::Accelerator Physics, A05 Synchrotron Radiation Facilities, 02 Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is an ultralow-emittance, kilometer-scale storage ring light source to be built in China. In this paper we will introduce the progress of the physical design and studies on HEPS over the past one year, covering issues of storage lattice design and optimization, booster design, injection design, collective effects, error study, insertion device effects, beam lifetime, etc., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018
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33. Status of HEPS Lattice Design and Physics Studies

Author

Jiao, Yi, Cui, Xiaohao, Duan, Zhe, Guo, Yuan, Ji, Daheng, Li, Jingyi, Li, Xiao Yu, Peng, Yuemei, Qin, Qing, Tian, Saike, Wang, Jiuqing, Wang, Na, Wei, Yuanyuan, Xu, Gang, Xu, Shou, Yan, Fang, Yu, Chenghui, and Zhao, Yaliang

Subjects
Beam dynamics, Physics::Accelerator Physics, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is a 6-GeV, kilometer-scale, ultralow-emittance storage ring light source to be built in Beijing, China. The HEPS is now under extensive design and study. In this report we will introduce the progress of the lattice design and related physics studies on HEPS, covering issues of storage ring design, booster design, injection design, collective effects, error study, insertion device effects, longitudinal dynamics, etc., Proceedings of the 13th Symposium on Accelerator Physics, SAP2017, Jishou, China

Published
2018
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34. Error Study of HEPS Booster

Author

Meng, Cai, Ji, Daheng, Li, Jingyi, and Peng, Yuemei

Subjects
Physics::Accelerator Physics, 02 Photon Sources and Electron Accelerators, A04 Circular Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is a 6-GeV, ultralow-emittance light source to be built in China. The injector is composed of a 500-MeV linac and a full energy booster with 1 Hz repetition frequency. The detailed error study of the booster will be presented, including misalignment errors and closed orbit correc-tion, magnetic field errors and power supply errors. The effect of errors on closed orbit, tune, chromaticity and dynamic aperture will be discussed. The dynamic aperture with multipole errors will be presented also., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018
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35. Beam Performance Simulation with Error Effects and Correction on HEPS Design

Author

Ji, Daheng, Cui, Xiaohao, Duan, Zhe, Jiao, Yi, Wei, Yuanyuan, and Zhao, Yaliang

Subjects
Physics::Accelerator Physics, A05 Synchrotron Radiation Facilities, 02 Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is a 6-GeV, ul-tralow-emittance kilometre-scale storage ring light source to be built in China. In this paper, the progress of the error and correction effect study on HEPS over the past one year will be presented, including error requirement and correction progress update. And beam performance eval-uation with static error and correction on orbit, optics, emittance and dynamic aperture will be presented., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018
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36. Study of the Dynamic Aperture Reduction Due to Error Effects for the High Energy Photon Source

Author

Duan, Zhe, Ji, Daheng, and Jiao, Yi

Subjects
Physics::Accelerator Physics, A05 Synchrotron Radiation Facilities, 02 Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The 6 GeV High Energy Photon Source (HEPS) employs a lattice of 48 hybrid 7BA cells, aims to achieve a natural emittance between 30 to 60 pm, within a circumference of about 1.3 km. In the performance evaluation of optimized lattices, we found that the dynamic aperture of the bare lat- tice were su cient for on-axis swap-out injection, but a large reduction in the dynamic aperture was observed in the simu- lation when including lattice imperfections and even after dedicated lattice corrections. In this paper, we identi ed the feed-down e ects of sextupoles as the major source of DA reduction, and proposed to use dedicated sextupole movers to e ciently reduce the orbit o sets in sextupoles, to par- tially recover the dynamic aperture, sextupole mover-based optics correction schemes were also discussed., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018
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37. Status of HEPS Booster Lattice Design and Physics Studies

Author

Peng, Yuemei, Duan, Zhe, Guo, Yuan, Ji, Daheng, Jiao, Yi, Li, Jingyi, Meng, Cai, Tian, Saike, and Xu, Haisheng

Subjects
A24 Accelerators and Storage Rings, Other, Physics::Accelerator Physics, 02 Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) with an ul-tralow emittance is proposed to be built in Beijing, Chi-na. It will utilize a booster as its full energy injector. On-axis swap-out injection is chosen as the baseline injec-tion scheme for the storage ring. As required by the stor-age ring, a beam with a bunch charge up to 2.5 nC is needed to be injected in the booster. However, limited by the transverse mode coupling instability (TMCI), such a high bunch charge is challenging. To overcome this problem, a lattice with a considerable large momentum compaction factor is designed. This paper reports the lattice design and physics studies of the HEPS booster, including injection and extraction design, error studies, eddy current effects, collective effects, and so on., Proceedings of the 9th Int. Particle Accelerator Conf., IPAC2018, Vancouver, BC, Canada

Published
2018
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38. The Progress of HEPS Booster Design

Author

Peng, Yuemei, Duan, Zhe, Guo, Yuan, Ji, Daheng, Jiao, Yi, Tian, Saike, and Xu, Gang

Subjects
Physics::Accelerator Physics, 02 Photon Sources and Electron Accelerators, Computer Science::Digital Libraries, Computer Science::Distributed, Parallel, and Cluster Computing, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS), a kilometre-scale, ultralow-emittance storage ring light source, is to be built in Beijing, China. For HEPS, a full energy booster synchrotron operating at a frequency of 2Hz is considered. In this paper, we will report the progress of the lattice design and physics studies on HEPS booster, containing the injection consideration, ramping process, error studies, and so on., Proceedings of the 8th Int. Particle Accelerator Conf., IPAC2017, Copenhagen, Denmark

Published
2017
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39. Effects of Insertion Devices on Stored Electron Beam of High Energy Photon Source

Author

Li, Xiao Yu, Duan, Zhe, Ji, Daheng, Jiao, Yi, and Yang, Yufeng

Subjects
Physics::Accelerator Physics, 02 Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is a 4th generation, 6-Gev, ultralow-emittance, photon source project in China. High brightness hard X-ray beams at the energy particularly above 10kev are provided by insertion devices installed in straight sections of the storage ring. Brightness tuning curves of 14 ID beamlines planned in HEPS first stage are obtained after designing their parameters. However the presence of these insertion devices produce several effects on the beam performances including betatron tunes, betatron amplitude functions, closed orbit, emittance and dynamic aperture etc. It is found that the vertical octupole effect due to the fourteen IDs under the present schemes produce the most significant effect on the vertical dynamic aperture reduction. The ID field error effects on close orbit can be completely compensated by two correctors adjacent the ID at the both side. The horizontal emittance reduces to 36pm.rad due to the damping wiggler effect of IDs with field error after the orbit correction is also obtained., Proceedings of the 8th Int. Particle Accelerator Conf., IPAC2017, Copenhagen, Denmark

Published
2017
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40. Progress of the Lattice Design and Physics Studies on the High Energy Photon Source

Author

Jiao, Yi, Cui, Xiaohao, Duan, Zhe, Guo, Yuan, Ji, Daheng, Li, Jingyi, Li, Xiao Yu, Peng, Yuemei, Qin, Qing, Tian, Saike, Wang, Jiuqing, Wang, Na, Wei, Yuanyuan, Xu, Gang, Xu, Haisheng, Yan, Fang, Yu, Chenghui, and Zhao, Yaliang

Subjects
Physics::Accelerator Physics, 02 Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is a 6-GeV, kilometer-scale, ultralow-emittance storage ring light source to be built in Beijing, China. In this paper we will discuss the progress of the lattice design and related physics studies on HEPS, covering issues of storage ring design, booster design, injection design, collective effects, error study, insertion device effects, longitudinal dynamics, etc., Proceedings of the 8th Int. Particle Accelerator Conf., IPAC2017, Copenhagen, Denmark

Published
2017
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41. Study of HEPS Performance with Error Model and Simulated Correction

Author

Ji, Daheng, Duan, Zhe, Tian, Saike, and Wei, Yuanyuan

Subjects
05 Beam Dynamics and Electromagnetic Fields, Accelerator Physics
Abstract

As an important component of physics study on High Energy Photon Source (HEPS), error modelling and simu-lated correction will provide the guideline to restrict the manufacture redundancy of the hardware and estimate the real machine performance. In this paper, we present some work on error effect evaluation and simulated commis-sioning based on a recent lattice design., Proceedings of the 8th Int. Particle Accelerator Conf., IPAC2017, Copenhagen, Denmark

Published
2017
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42. First Turn Around Strategy for HEPS

Author

Zhao, Yaliang, Duan, Zhe, Ji, Daheng, Jiao, Yi, and Li, Chao

Subjects
05 Beam Dynamics and Electromagnetic Fields, Physics::Accelerator Physics, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS) is a 6-GeV, kilometer-scale, quasi-diffraction limited storage ring light source to be built in China[1]. Getting the first turn and approaching the closed orbit is very important in accelerator commissioning. In order to make first turn beam commissioning efficiently, we develop a MATLAB tool based on AT for automatic beam correction and closed orbit searching. The algorithm and simulation results are presented in this paper., Proceedings of the 8th Int. Particle Accelerator Conf., IPAC2017, Copenhagen, Denmark

Published
2017
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43. The Off-Axis Injection Lattice Design of HEPS Storage Ring

Author

Peng, Yuemei, Ji, Daheng, Jiao, Yi, Tian, Saike, Wang, Jiuqing, and Xu, Gang

Subjects
05 Beam Dynamics and Electromagnetic Fields, Physics::Accelerator Physics, Accelerator Physics
Abstract

The dynamic aperture size determines the injection scheme to a large extent. The aim of storage ring design of HEPS is to achieve ultralow emittances on both transverse planes. This will bring very strong lattice nonlinearities. The present nominal design is a hybrid 7BA design with effective dynamic aperture of about 3 mm both in horizontal and vertical plane. Due to the restriction of dynamic aperture of this lattice, on-axis injection is the only choice . But, on-axis injection will bring a very big challenge for injector or injection kicker, if it is feasible to obtain a large dynamic aperture, off-axis injection is a favoured choice. In this paper, we will show the preliminary study of the lattice design with a sufficient dynamic aperture for pulsed multipole injection.., Proceedings of the 8th Int. Particle Accelerator Conf., IPAC2017, Copenhagen, Denmark

Published
2017
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44. The Errors Study on a Recent Heps Low-Beta Design

Author

Ji, Daheng, Jiao, Yi, and Xu, Gang

Subjects
05 Beam Dynamics and Electromagnetic Fields, Physics::Accelerator Physics, Accelerator Physics
Abstract

The next synchrotron light source High Energy Photon Source is currently studied at Beijing. A nominal design for the HEPS, in a hybrid 7BA lattice and with an emittance of 60 pm.rad in a circumference of 1.3 kilometers, is completed for further study. In this paper, we present some work on error effect based on the nominal lattice design. Topics covered include dynamic aperture and beam parameters affected by magnetic field error, systematic and random multipole errors and misalignment effect., Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea

Published
2016
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45. Recent Physical Studies for the HEPS Project

Author

Xu, Gang, Duan, Zhe, Guo, Yuan, Ji, Daheng, Jiao, Yi, Li, Xiao Yu, Peng, Yuemei, Qin, Qing, Qiu, Jing, Tian, Saike, Wang, Jiuqing, Wang, Na, Wei, Yuanyuan, and Yu, Chenghui

Subjects
Physics::Accelerator Physics, 02 Photon Sources and Electron Accelerators, Accelerator Physics
Abstract

The High Energy Photon Source (HEPS), a kilometre- scale storage ring light source, with a beam energy of 5 to 6 GeV and transverse emittances of a few tens of pm.rad, is to be built in Beijing and now is under design. In this paper we reported the progress and status of the physical studies for the HEPS project, covering issues of storage lattice design and optimization, booster design, injection design, collective effects, error study, insertion device effects, longitudinal dynamics, etc., Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea

Published
2016
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46. First Experience of Applying Loco for Optics at Cosy

Author

Ji, Daheng, Bai, Mei, Dutheil, Yann, Hinder, Fabian, Lorentz, Bernd, Simon, Michael, and Weidemann, Christian

Subjects
Physics::Accelerator Physics, 04 Hadron Accelerators, Nuclear Experiment, Accelerator Physics
Abstract

COSY is a cooler synchrotron designed for internal target hadron physics experiments, equipped with both electron cooling system and stochastic cooling system. During the past couple of years, COSY has been evolved into an ideal test facility for accelerator technology development as well as detector development for the Facility of Anti-proton and Ion Research at Darmstadt (FAIR). In addition, COSY has been the test ground for exploring the feasibility of a storage ring based Electric Dipole Moment (EDM) measurement. The proposed precursor experiment of a direct measurement of the EDM of the deuteron at COSY using an RF wien filter by the Jülich Electric Dipole moment Investigation (JEDI) requests significant improvement of beam based measurements as well as beam control. In this paper, first results of measured linear optics based on AT-LOCO are reported. Simulation studies are also discussed., Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea

Published
2016
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47. BEPCII Performance and Beam Dynamics Studies on Luminosity

Author

Yu, Chenghui, Duan, Zhe, Gu, Shengdong, Guo, Yuan, Huang, Xiyang, Ji, Daheng, Ji, Hongfei, Jiao, Yi, Liu, Zhicong, Peng, Yuemei, Qin, Qing, Sun, Yuansheng, Tian, Saike, Wang, Jiuqing, Wang, Na, Wang, Xinhao, Wei, Yuanyuan, Wen, Xuemei, Wu, Jin, Xing, Jun, Xu, Gang, Yue, Teng, Zhang, Chuang, and Zhang, Yuan

Subjects
Astrophysics::High Energy Astrophysical Phenomena, Physics::Accelerator Physics, High Energy Physics::Experiment, 01 Circular and Linear Colliders, Accelerator Physics
Abstract

The upgrade of the Beijing Electron Positron Collider, BEPCII, is now in a good performance for both high energy physics and synchrotron radiation experiments. The luminosity at the design energy of 1.89 GeV reached the design value 1.0*10³³/cm²/s¹ recently. A lot of work, including accelerator physics study and technical progress, has been done for the luminosity enhancement, not only at the design energy, but all the energy region run for HEP experiments from 1.0 to 2.3 GeV. The performance of BEPCII and the process of luminosity enhancement will be described in detail., Proceedings of the 7th Int. Particle Accelerator Conf., IPAC2016, Busan, Korea

Published
2016
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48. CEPC Conceptual Design Report: Volume 2 - Physics & Detector

Author

Guimarães Da Costa, João Barreiro, Gao, Yuanning, Jin, Shan, Qian, Jianming, Tully, Christopher G., Young, Charles, Wang, Lian-Tao, Ruan, Manqi, Zhu, Hongbo, Dong, Mingyi, Ouyang, Qun, Wu, Zhigang, Deng, Zhi, Li, Yulan, Qi, Huirong, Wang, Meng, Fu, Chengdong, Yao, Wei-Ming, Grancagnolo, Franco, Liu, Jianbei, Hu, Tao, Yang, Haijun, Bedeschi, Franco, Ferrari, Roberto, Zhao, Wei, Zhu, Zian, Giacomelli, Paolo, Li, Liang, Li, Fei, Liu, Zhenan, Zhu, Kejun, Hou, Suen, Bozovic Jelisavcic, Ivanka, Li, Gang, Fang, Yaquan, Li, Qiang, Boonekamp, Maarten, Liang, Zhijun, Piccinini, Fulvio, Shi, Xin, Abbrescia, Marcello, Ahmad, Muhammad, Ai, Xiaocong, Albergo, Sebastiano, Aleem, Muhammad Abid, Alexeev, Maxim, Aliev, Malik, Altmannshofer, Wolfgang, Alves, Fábio, An, Fenfen, An, Guangpeng, An, Haipeng, An, Qi, An, Rui, Andreazza, Attilio, Anduze, Marc, Antonello, Massimiliano, Garcia Pascual, Juan Antonio, Antusch, Stefan, Arhrib, Abdesslam, Arkani-Hamed, Nima, Arndt, Kirk, Azzi, Patrizia, Azzurri, Paolo, Palmer, Robert B., Bai, Bowen, Bai, Sha, Bai, Yang, Bai, Yu, Balagura, Vladislav, Balossino, Ilaria, Ban, Yong, Barger, Vernon, Barklow, Timothy, Bartalini, Paolo, Becattini, Francesco, Bellagamba, Lorenzo, Belloni, Alberto, Bencivenni, Giovanni, Berg, J. Scott, Bernius, Catrin, Bertani, Monica, Bertella, Claudia, Bertucci, Michele, Bi, Xiaojun, Bi, Yuanjie, Bian, Ligong, Bian, Tianjian, Bianchi, Fabrizio, Bigi, Ikaros I., Biglietti, Michela, Bignami, Andrea, Bilei, Gianmario, Borgonovi, Lisa, Bortoletto, Daniela, Bortone, Alberto, Boscherini, Davide, Bosotti, Angelo, Boudry, Vincent, Braibant, Sylvie, Bramante, Joseph, Branchini, Paolo, Brient, Jean-Claude, Caccia, Massimo, Cai, Chengfeng, Cai, Hao, Cai, Wenyong, Cai, Xiao, Cai, Yiming, Cai, Yuchen, Cai, Yunhai, Cai, Zhiqiang, Cano Bret, Marc, Cao, Bo, Cao, Dewen, Cao, Jianshe, Cao, Junjie, Cao, Qing-Hong, Carloni Calame, Carlo Michel, Casanova, Raimon, Cavasinni, Vincenzo, Chai, Junying, Chai, Weiping, Chang, Ningbo, Chang, Qin, Chang, Spencer, Chang, We-Fu, Chang, Xuejun, Chang, Yuan-Hann, Chekanov, Sergei, Chen, Bin, Chen, Chunhui, Chen, Fusan, Chen, Gang, Chen, Guoming, Chen, Huan, Chen, Huirun, Chen, Lei, Chen, Liejian, Chen, Mingjun, Chen, Mingshui, Chen, Nian, Chen, Ning, Chen, Shanhong, Chen, Shanzhen, Chen, Shao-Long, Chen, Shaomin, Chen, Shenjian, Chen, Shi, Chen, Wei, Chen, Wen, Chen, Xin, Chen, Xun, Chen, Xurong, Chen, Ye, Chen, Yu, Chen, Yuan, Chen, Yuanbai, Chen, Yukai, Chen, Zhenxing, Cheng, Hao, Cheng, Hsin-Chia, Cheng, Huajie, Cheng, Jian, Cheng, Shan, Cheng, Tongguang, Cheng, Weishuai, Cheong, Sanha, Chi, Yunlong, Chiarello, Gianluigi, Chiesa, Mauro, Chiu, Wen Han, Chou, Weiren, Chu, Chungming Paul, Chu, Ming-Chung, Chu, Xiaotong, Chu, Zhaolin, Chua, Chun-Khiang, Cibinetto, Gianluigi, Ciuchini, Marco, Cobal, Marina, Cochran, James, Coelho Lopes Sa, Rafael, Cossio, Fabio, Craig, Nathaniel, Cui, Han, Cui, Hanhua, Cui, Xiaohao, Cui, Zhaoyuan, Curtin, David, D Agnolo, Raffaele Tito, Dai, Jian-Ping, Dai, Jianping, Dai, Jin, Dai, Lei, Dai, Wei, Dai, Xuwen, Curtis, Stefania, Filippis, Nicola, Lucia, Erika, Mori, Francesca, Delgado, Antonio, Demarteau, Marcel, Deng, Changdong, Deng, Wei-Tian, Destefanis, Marco, Dev, P. S. Bhupal, Di Micco, Biagio, Ding, Ran, Ding, Xuefeng, Ding, Yadong, Da Rocha Rolo, Manuel Dionisio, Domenici, Danilo, Dong, Bingbing, Dong, Chongmin, Dong, Dong, Dong, Haiyi, Dong, Jianing, Dong, Jing, Dong, Lan, Dopke, Jens, Dordevic, Milos, Dos Santos Ramos, Tiago, Draper, Patrick, Drewes, Marco, Du, Mingxuan, Duan, Guang Hua, Eklund, Lars, Eno, Sarah, Erler, Jens, Essig, Rouven, Fan, Jiji, Fan, Shenghong, Fan, Wenjie, Fan, Xiangning, Fang, Shuangshi, Fano, Livio, Farilla, Addolarata, Farinelli, Riccardo, Faus-Golfe, Angeles, Fedderke, Michael A., Felici, Giulietto, Feng, Changqing, Feng, Cunfeng, Feng, Feng, Feng, Jianxin, Feng, Jun, Feng, Tai-Fu, Fischer, Oliver, Flores Castillo, Luis Roberto, Fontanesi, Elisa, Freitas, Ayres, Frotin, M., Frugiuele, Claudia, Fu, Jinyu, Fu, Qibin, Fu, Shinian, Fuchs, Elina, Fukuda, Shigeki, Gabrielli, Emidio, Gaido, Luciano, Gan, Pingping, Gao, Jie, Gao, Jun, Gao, Wu, Gao, Yanyan, Gao, Yu, Garzia, Isabella, Gaudio, Gabriella, Ge, Shao-Feng, Geng, Chao-Qiang, Geng, Huiping, Li-Sheng Geng, Gentile, Simonetta, Giraud, J., Giudice, Gian, Godbole, Rohini M., Gong, Dianjun, Gong, Guanghua, Gong, Hui, Gong, Li, Gong, Lingling, Gori, Stefania, Gou, Quanbu, Greco, Mario, Greco, Michela, Gribanov, Sergei S., Grinstein, Sebastian, Grondin, D., Gu, Jiayin, Gu, Limin, Gu, Pei-Hong, Guidi, Vincenzo, Guo, Fangyi, Guo, Jingyuan, Guo, Jun, Guo, Lei, Guo, Xin, Guo, Yuanyuan, Guo, Zhigang, Gupta, Ramesh, Han, Chengcheng, Han, Dejun, Han, Jinzhong, Han, Liangliang, Han, Ran, Han, Ruixiong, Han, Shuang, Han, Yanliang, Han, Yubo, Hang, Yanfeng, Hao, Jiankui, Hao, Xiqing, He, Dayong, He, Hong-Jian, He, Jibo, He, Jun, He, Min, He, Xiang, He, Xianke, He, Xiaogang, He, Yangle, He, Zhenqiang, Heinemeyer, Sven, Heng, Yuekun, Hong, Daojin, Hong, Jiangliu, Hong, Yang, Hor, Yuenkeung, Hostachy, J. -Y, Hou, Qingbo, Hou, Zhilong, Hsu, Shih-Chieh, Hu, Bitao, Hu, Jifeng, Hu, Jun, Hu, Shouyang, Hu, Shuyang, Hu, Yongcai, Hu, Yu, Hu, Zhen, Hu, Zhongjun, Huang, Chao-Shang, Huang, Fapeng, Huang, Guangshun, Huang, Guo-Yuan, Huang, Jinghui, Huang, Jinshu, Huang, Junjie, Huang, Liangsheng, Huang, Rijun, Huang, Shuhui, Huang, Tongming, Huang, Tuchen, Huang, Xiaozhong, Huang, Xingtao, Huang, Xuguang, Huang, Yanping, Huang, Yongsheng, Huang, Yuyan, Huo, Ran, Ignatov, Fedor V., Iqbal, Munawar, Jackson, Paul, Javaid, Tahir, Ji, Daheng, Ji, Qingping, Ji, Xiaoli, Jia Jia, Jia, Junji, Jia, Yu, Jia, Zihang, Jiang, Jiechen, Jiang, Yun, Jiao, Jianbin, Jin, Dapeng, Jin, Mingjie, Jin, Song, Jin, Yanli, Jin, Yi, Jing, Maoqiang, John, Jaya, Jones, Tim, Ju, Xudong, Jueid, Adil, Jung, Sunghoon, Jyotishmati, Susmita, Kacarevic, Goran, Kane, Gordon, Kang, Wen, Karagoz, Muge, Kato, Chikuma, Ke, Zhiyong, Kharzeev, Dmitri, Khoze, Valentin, Kilic, Can, Kiuchi, Ryuta, Ko, Pyungwon, Kobayashi, Tetsuya, Kong, Panyu, Kong, Shibei, Kopp, Joachim, Kotwal, Ashutosh, Kozaczuk, Jonathan, Kozyrev, Evgeny A., Krasnov, Alexander, Kuflik, Eric, Kuo, Chia-Ming, Kwok, King Wai, Lagarde, Francois, Lai, Pei-Zhu, Laktineh, Imad, Lan, Boyang, Lan, Xiaofei, Lavezzi, Lia, Lee, Seung J., Lei, Ge, Leng, Yongbin, Leung, Sze Ching, Li, Bingzhi, Li, Bo, Li, Boyang, Li, Changhong, Li, Cheng, Li, Congqiao, Li, Dazhang, Li, Dikai, Li, Fengyun, Li, Gexing, Li, Guangrui, Li, Hai-Bo, Li, Haifeng, Li, Haoqing, Li, Hengne, Li, Honglei, Li, Huijing, Li, Jin, Li, Jing, Li, Jinmian, Li, Jinyan, Li, Jungang, Li, Kang, Li, Ke, Li, Li, Li, Lianming, Li, Long, Li, Mengran, Li, Minxian, Li, Peirong, Li, Peiyu, Li, Peng, Li, Qiaodan, Li, Quansheng, Li, Rui, Li, Shaopeng, Li, Shiyuan, Li, Shu, Li, Tianjun, Li, Tong, Li, Weiguo, Li, Wenjun, Li, Xiaoling, Li, Xiaomei, Li, Xiaoping, Li, Xin, Li, Xingguo, Li, Xin-Qiang, Li, Yanwei, Li, Yiming, Ying Li, Li, Ying-Ying, Li, Yufeng, Li, Zhao, Li, Zhenghua, Li, Zhihui, Li, Zhongquan, Li, Ziyuan, Liang, Chaohui, Liang, Hao, Liang, Jing, Liang, Jinhan, Liang, Zuotang, Liao, Hean, Liao, Hongbo, Liao, Jinfeng, Liao, Libo, Liao, Wei, Liao, Yi, Liao, Yunfeng, Lin, Chuangxin, Lin, Hai, Lin, Haiying, Ling, Jiajie, Ling, Pan, Lisanti, Mariangela, Liu, Ao, Liu, Baiqi, Liu, Beijiang, Liu, Bing, Liu, Bo, Liu, Dianyu, Liu, Dong, Liu, Fu-Hu, Liu, Hongbang, Liu, Hu, Liu, Jia, Liu, Jiaming, Liu, Jian, Liu, Jianfei, Liu, Jiangtao, Liu, Jie, Liu, Jindong, Liu, Kexin, Liu, Ling, Liu, Liqiang, Liu, Ming, Liu, Ning, Liu, Peilian, Liu, Qian, Liu, Qingyuan, Liu, Shubin, Liu, Shulin, Liu, Tao, Liu, Weitao, Liu, Wendi, Liu, Xiang, Liu, Xiaohui, Liu, Xin, Liu, Xuesong, Liu, Xuewen, Liu, Xuyang, Liu, Yandong, Liu, Yang, Liu, Yanlin, Liu, Yi, Liu, Yong, Liu, Yudong, Liu, Zengqiang, Liu, Zeyuan, Liu, Zhanfeng, Liu, Zhaofeng, Liu, Zhen, Liu, Zhenchao, Liu, Zhongxiu, Liu, Zuowei, Llorente Merino, Javier, Lo, Cheuk Yee, Logashenko, Ivan B., Long, Andrew, Lou, Xinchou, Low, Ian, Low, Matthew, Lu, Cai-Dian, Lu, Wei, Lu, Weiguo, Lu, Yuanrong, Lu, Yunpeng, Lu, Zhijun, Lukic, Strahinja, Luo, Mingcheng, Luo, Pengwei, Luo, Qing, Luo, Tao, Luo, Xiaofeng, Luo, Yanting, Luo, Zhenhuan, Lyu, Kunfeng, Lyu, Xiaorui, Ma, Huizhou, Ma, Kai, Ma, Lianliang, Ma, Na, Ma, Qiang, Ma, Rui, Ma, Wen-Gan, Ma, Xiao, Ma, Xiaotian, Ma, Xinpeng, Ma, Yanling, Ma, Yanqing, Ma, Yongsheng, Ma, Yue, Ma, Zhongjian, Maggiora, Marco, Magniette, Frédéric, Malamud, Ernie, Mangano, Michelangelo, Mao, Lijun, Mao, Mingling, Mao, Yajun, Mao, Yanmin, Mao, Yanyan, Martin, Adam, Martinez Outschoorn, Verena Ingrid, Matsumoto, Shigeki, Mccullough, Matthew, Mcmahon, Steve, Meade, Patrick, Mele, Barbara, Mellado, Bruce, Men, Lingling, Meng, Cai, Meng, Fanbo, Mezzadri, Giulio, Mi, Zhenghui, Michelato, Paolo, Min, Tianjue, Ming, Lei, Mittal, Monika, Molson, James, Monaco, Laura, Montagna, Guido, Morello, Gianfranco, Moretti, Mauro, Mu, Zhihui, Nanni, Jérome, Neubert, Matthias, Nicrosini, Oreste, Nie, Changshan, Nikitin, Sergei, Ning, Feipeng, Ning, Guo-Zhu, Nishu, Nishu, Niu, Yazhou, Ojalvo, Isobel, Okunev, Ivan, Ospanov, Rustem, Pagani, Carlo, Paganis, Stathes, Panareo, Marco, Pandurovic, Mila, Pang, Tong, Panizzo, Giancarlo, Paparella, Rocco, Parida, Bibhuti, Passemar, Emilie, Pei, Guoxi, Pei, Shilun, Peng, Quanling, Peng, Xiaohua, Peng, Yuemei, Petrov, Alexey, Pezzotti, Lorenzo, Pierre-Émile, Thomas, Ping, Rong-Gang, Plackett, Richard, Polesello, Giacomo, Poli Lener, Marco, Polini, Alessandro, Popov, Alexandr S., Prell, Soeren, Qi, Ming, Qian, Sen, Qian, Zhuoni, Qiao, Cong-Feng, Qiao, Yusi, Qin, Guang-You, Qin, Qin, Qin, Qing, Qin, Zhonghua, Qu, Huamin, Ramani, Harikrishnan, Ramsey-Musolf, Michael, Redaelli, Stefano, Reece, Matthew, Ren, Jing, Rischke, Dirk, Rivetti, Angelo, Roda, Chiara, Rolandi, Luigi, Rompotis, Nikolaos, Ruan, Xifeng, Ruiz, Richard, Sabbi, Gianluca, Sang, Wen-Long, Santoro, Romualdo, Sanz-Cillero, Juan J., Schlaffer, Matthias, Schmid, Frank, Schuster, Philip, Schuy, Alex, Schwaller, Pedro, Sciuto, Antonella, Sen, Tanaji, Sertore, Daniele, Sha, Peng, Shan, Lianyou, Shang, Feng, Shao, Dingyu, Shao, Jianxiong, Shashkov, Yaroslav, Shelton, Jessie, Shen, Cheng-Ping, Shen, Peixun, Shen, Qiuping, Shen, Yang, Shen, Yuqiao, Shen, Zhongtao, Shi, Can, Shi, Haoyu, Shi, Jingyuan, Shi, Liaoshan, Shi, Renjie, Shi, Yu-Ji, Shi, Yukun, Shi, Yulong, Shin, Seodong, Shipsey, Ian, Shiu, Gary, Shu, Guan, Shu, Jing, Si, Zonguo, Silvestrini, Luca, Sinyatkin, Sergey, Song, Hong, Song, Mao, Song, Weimin, Stamou, Emannuel, Stratakis, Diktys, Su, Dong, Su, Feng, Su, Shufang, Su, Wanyun, Su, Wei, Su, Yangjie, Sui, Yanfeng, Sullivan, Michael, Sun, Baogeng, Sun, Daming, Sun, Guoqiang, Sun, Hao, Sun, Junfeng, Sun, Liang, Sun, Peng, Sun, Qingfeng, Sun, Shengsen, Sun, Sichun, Sun, Tingting, Sun, Xiangming, Sun, Xianjing, Sun, Xilei, Sun, Yanjun, Sun, Yongzhao, Sundrum, Raman, Tang, Chuanxiang, Tang, Guangyi, Tang, Jian, Tang, Jiannan, Tang, Jingyu, Tang, Songzhi, Tang, Yi-Lei, Tao, Jia, Tao, Junquan, Tassielli, Giovanni, Tenchini, Roberto, Teytelman, Dmitry, Thaler, Jesse, Tian, Saike, Tian, Xingcheng, Tonelli, Guido, Tong, Xinyu, Trentadue, Luca, Tsai, Yuhsin, Tsybychev, Dmitri, Tu, Yanjun, Tweedie, Brock, Unwin, James, Verducci, Monica, Vicini, Alessandro, Videau, Henri, Viehhauser, Georg, Vivarelli, Iacopo, Vossebeld, Joost, Vukasinovic, Natasa, Wan, Xia, Wang, Biao, Wang, Bin, Wang, Binlong, Wang, Bo, Wang, Chengtao, Wang, Chengwei, Wang, Chenliang, Wang, Dayong, Wang, Dou, Wang, Fei, Wang, Feng, Wang, Gang, Wang, Haijing, Wang, Haiyun, Wang, Hui, Wang, Jian, Wang, Jianchun, Wang, Jianli, Wang, Jianxiong, Wang, Jiawei, Wang, Jie, Wang, Jin, Wang, Jing, Wang, Jinwei, Wang, Ke, Wang, Kechen, Wang, Kunfu, Wang, Liangliang, Wang, Lijiao, Wang, Linlin, Wang, Longge, Wang, Lu, Wang, Meifen, Wang, Na, Wang, Pengcheng, Wang, Qun, Wang, Qunyao, Wang, Ran, Wang, Ren-Jie, Wang, Rongkun, Wang, Shaobo, Wang, Shaozhe, Wang, Shengchang, Wang, Shuzheng, Wang, Siguang, Wang, Tianhong, Wang, Tong, Wang, Wei, Wang, Weiping, Wang, Wenyu, Wang, Xi, Wang, Xiangjian, Wang, Xiangqi, Wang, Xiaolong, Wang, Xiaoning, Wang, Xiaoping, Wang, Xin, Wang, Xingze, Wang, Xiongfei, Wang, Yan, Wang, Yaqian, Wang, Yi, Wang, Yifang, Wang, Ying, Wang, Yiwei, Wang, Yong, Wang, Youkai, Wang, Yu, Wang, Yufeng, Wang, Yuhao, Wang, Zhaofeng, Wang, Zhigang, Wang, Zhipeng, Wang, Zhiyong, Wang, Zirui, Wang, Zixun, Wang, Zongyuan, Wei, Runing, Wei, Shujun, Wei, Wei, Wei, Xiaomin, Wei, Yuanyuan, Wei, Yuqian, Wen, Shuopin, Wen, Zhiwen, Willocq, Stephane, Witte, Holger, Wu, Jinfei, Wu, Juan, Wu, Kewei, Wu, Lei, Wu, Linghui, Wu, Mengqing, Wu, Peiwen, Wu, Tianya, Wu, Wenhuan, Wu, Xi, Wu, Xiao-Hong, Wu, Xing-Gang, Wu, Xu, Wu, Xueting, Wu, Ye, Wu, Yuwen, Wu, Zhi, Xia, Wenhao, Xiang, Dao, Xiang, Qian-Fei, Xianyu, Zhong-Zhi, Xiao, Bo-Wen, Xiao, Dengjie, Xiao, Ning, Xiao, Ouzheng, Xiao, Rui-Qing, Xiao, Yu, Xiao, Zhen-Jun, Xie, Ke-Pan, Xie, Xinhai, Xie, Yuehong, Xie, Yuguang, Xie, Zongtai, Xing, Qingzhi, Xing, Zhizhong, Xiu, Qinglei, Xu, Chang, Xu, Da, Xu, Fanrong, Xu, Guanglei, Xu, Guangzhi, Xu, Haocheng, Xu, Hongge, Xu, Hongliang, Xu, Hui, Xu, Ji, Xu, Nu, Xu, Qing, Xu, Qingjin, Xu, Qingjun, Xu, Wei, Xu, Yin, Xu, Yongheng, Xu, Zijun, Xue, Wei, Yan, Bin, Yan, Jun, Yan, Liang, Yan, Mingyang, Yan, Qi-Shu, Yan, Tian, Yan, Wenbiao, Yan, Yingbing, Yang, Bingfang, Yang, Huan, Yang, Jiancheng, Yang, Jianquan, Yang, Jin Min, Yang, Jing, Yang, Junfeng, Yang, Li, Yang, Liu, Yang, Mei, Yang, Ping, Yang, Qianwen, Yang, Xingwang, Yang, Xuan, Yang, Ye, Yang, Ying, Yang, Yong, Yang, Yongliang, Yang, Yueling, Yang, Zhenwei, Yao, Weichao, Yatsenko, Elena, Ye, Hanfei, Ye, Jingbo, Ye, Mei, Ye, Qiang, Ye, Ziping, Yi, Fang, Yi, Kai, Yilun, Xue, Yin, Hang, Yin, Pengfei, Yin, Xiangwei, Yin, Ze, Yin, Zhongbao, You, Zhengyun, Yu, Boxiang, Yu, Chenghui, Yu, Chunxu, Yu, Dan, Yu, Felix, Yu, Fusheng, Yu, Lingda, Yu, Lu, Yu, Yue, Yu, Zhao-Huan, Yuan, Li, Yuan, Siyu, Yuan, Ye, Yuan, Youjin, Yuan, Zhiyang, Yue, Chongxing, Yue, Junhui, Yue, Qian, Zaib, Un-Nisa, Zhai, Jian, Zhai, Jiyuan, Zhang, Baotang, Zhang, Ben-Wei, Zhang, Bo, Zhang, Bowen, Zhang, Cen, Zhang, Chad, Zhang, 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Zhao, Yu, Zhao, Yue, Zhao, Zhengguo, Zhao, Zhen-Xing, Zhao, Zhuo, Zheng, Bo, Zheng, Hongjuan, Zheng, Liang, Zheng, Ran, Zheng, Shuxin, Zheng, Taifan, Zheng, Xuxing, Zheng, Ya-Juan, Zheng, Yangheng, Zhi, Yu, Zhong, Bin, Zhong, Yiming, Zhou, Bing, Zhou, Hai-Qing, Zhou, Hang, Zhou, Jia, Zhou, Jianxin, Zhou, Jing, Zhou, Maosen, Zhou, Nan, Zhou, Ning, Zhou, Ningchuang, Zhou, Shiyu, Zhou, Shun, Zhou, Sihong, Zhou, Siyi, Zhou, Xiang, Zhou, Yang, Zhou, Yi, Zhou, Yu-Feng, Zhou, Zusheng, Zhu, Changhe, Zhu, Chengguang, Zhu, Chenzheng, Zhu, Dechong, Zhu, Hongyan, Zhu, Hua-Xing, Zhu, Jiamin, Zhu, Jiang, Zhu, Jingya, Zhu, Jingyu, Zhu, Junjie, Zhu, Kai, Zhu, Kun, Zhu, Li, Zhu, Ruilin, Zhu, Xianglei, Zhu, Xuezheng, Zhu, Yifan, Zhu, Yingshun, Zhu, Yongfeng, Zhuang, Xuai, Zong, Hongshi, Zou, Cong, Zou, Jiaheng, Zou, Ye, Zupan, Jure, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay, Laboratoire Leprince-Ringuet (LLR), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-École polytechnique (X)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Galaxies, Etoiles, Physique, Instrumentation (GEPI), Institut national des sciences de l'Univers (INSU - CNRS)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université Paris Diderot - Paris 7 (UPD7)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Subatomique et de Cosmologie (LPSC), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes [2016-2019] (UGA [2016-2019]), Institut de Physique Nucléaire de Lyon (IPNL), Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS), Laboratoire de Physique Nucléaire et de Hautes Énergies (LPNHE (UMR_7585)), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), CEPC Study Group, Centre National de la Recherche Scientifique (CNRS)-École polytechnique (X)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences de l'Univers (INSU - CNRS)-Université Paris Diderot - Paris 7 (UPD7)-Observatoire de Paris, Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3), Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Université de Paris (UP), and HEP, INSPIRE

Subjects
detector: technology, Higgs particle: particle source, electron positron: storage ring, [PHYS.HEXP] Physics [physics]/High Energy Physics - Experiment [hep-ex], engineering, FOS: Physical sciences, threshold: production, electron positron: annihilation, B-factory, High Energy Physics - Experiment, High Energy Physics - Experiment (hep-ex), High Energy Physics - Phenomenology (hep-ph), [PHYS.HEXP]Physics [physics]/High Energy Physics - Experiment [hep-ex], accelerator: technology, detector: design, Particle Physics - Phenomenology, new physics, hep-ex, Z0: decay, Higgs-factory, High Energy Physics::Phenomenology, Z0: particle source, hep-ph, electron positron: colliding beams, sensitivity, CEPC, High Energy Physics - Phenomenology, tau: particle source, 240 GeV-cms, vertex: primary, Higgs particle: electroproduction, charm: particle source, High Energy Physics::Experiment, proposed experiment, numerical calculations: Monte Carlo, Z0-factory, performance, Particle Physics - Experiment
Abstract

The Circular Electron Positron Collider (CEPC) is a large international scientific facility proposed by the Chinese particle physics community to explore the Higgs boson and provide critical tests of the underlying fundamental physics principles of the Standard Model that might reveal new physics. The CEPC, to be hosted in China in a circular underground tunnel of approximately 100 km in circumference, is designed to operate as a Higgs factory producing electron-positron collisions with a center-of-mass energy of 240 GeV. The collider will also operate at around 91.2 GeV, as a Z factory, and at the WW production threshold (around 160 GeV). The CEPC will produce close to one trillion Z bosons, 100 million W bosons and over one million Higgs bosons. The vast amount of bottom quarks, charm quarks and tau-leptons produced in the decays of the Z bosons also makes the CEPC an effective B-factory and tau-charm factory. The CEPC will have two interaction points where two large detectors will be located. This document is the second volume of the CEPC Conceptual Design Report (CDR). It presents the physics case for the CEPC, describes conceptual designs of possible detectors and their technological options, highlights the expected detector and physics performance, and discusses future plans for detector R&D and physics investigations. The final CEPC detectors will be proposed and built by international collaborations but they are likely to be composed of the detector technologies included in the conceptual designs described in this document. A separate volume, Volume I, recently released, describes the design of the CEPC accelerator complex, its associated civil engineering, and strategic alternative scenarios., 424 pages

49. Beam Dynamic Issues in the BEPCII Luminosity Commissioning

Author

Qin, Qing, Duan, Zhe, Huang, Nan, Ji, Daheng, Jiao, Yi, Liu, Yudong, Peng, Yuemei, Wang, Dou, Wang, Jiuqing, Wang, Na, Wang, Xinhao, Wei, Yuanyuan, Wen, Xuemei, Xing, Jun, Xu, Gang, Yu, Chenghui, Zhang, Chuang, and Zhang, Yuan

Subjects
Physics::Instrumentation and Detectors, Astrophysics::High Energy Astrophysical Phenomena, Physics::Accelerator Physics, High Energy Physics::Experiment, A02 Lepton Colliders, Accelerator Physics, 01 Circular Colliders
Abstract

As a tau-charm factory like collider, the upgrade project of the Beijing Electron Positron Collider (BEPCII), has reached its first design value of luminosity. During the commissioning of its luminosity, beam optics recovery, machine parameters measurement, detector solenoid compensation, and instability cure are main problems we met. Besides commissioning the machine, beams were delivered to the users from high energy physics and synchrotron radiation. This paper summarizes the accelerator physics issues in the BEPCII luminosity commissioning., Proceedings of the 1st International Particle Accelerator Conference, IPAC2010, Kyoto, Japan

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