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1. Calibration Measurements of the BICEP3 and BICEP Array CMB Polarimeters from 2017 to 2024

Author

Giannakopoulos, Christos, Vergès, Clara, Ade, P. A. R., Ahmed, Zeeshan, Amiri, Mandana, Barkats, Denis, Thakur, Ritoban Basu, Bischoff, Colin A., Beck, Dominic, Bock, James J., Boenish, Hans, Buza, Victor, Cheshire IV, James R., Connors, Jake, Cornelison, James, Crumrine, Michael, Cukierman, Ari Jozef, Denison, Edward, Dierickx, Marion, Duband, Lionel, Eiben, Miranda, Elwood, Brodi D., Fatigoni, Sofia, Filippini, Jeff P., Fortes, Antonio, Gao, Min, Goeckner-Wald, Neil, Goldfinger, David C., Grayson, James A., Grimes, Paul K., Hall, Grantland, Halal, George, Halpern, Mark, Hand, Emma, Harrison, Sam A., Henderson, Shawn, Hubmayr, Johannes, Hui, Howard, Irwin, Kent D., Kang, Jae Hwan, Karkare, Kirit S., Kefeli, Sinan, Kovac, J. M., Kuo, Chao-Lin, Lau, King, Lautzenhiser, Margaret, Lennox, Amber, Liu, Tongtian, Megerian, Koko G., Miller, Oliver, Minutolo, Lorenzo, Moncelsi, Lorenzo, Nakato, Yuka, Nguyen, H. T., O'brient, Roger, Patel, Anika, Petroff, Matthew A., Polish, Anna R., Precup, Nathan, Prouve, Thomas, Pryke, Clement, Reintsema, Carl D., Romand, Thibault, Salatino, Maria, Schillaci, Alessandro, Schmitt, Benjamin, Singari, Baibhav, Soliman, Ahmed, Germaine, Tyler St, Steiger, Aaron, Steinbach, Bryan, Sudiwala, Rashmi, Thompson, Keith L., Tsai, Calvin, Tucker, Carole, Turner, Anthony D., Vieregg, Abigail G., Wandui, Albert, Weber, Alexis C., Willmert, Justin, Wu, Wai Ling K., Yang, Hung-I, Yu, Cyndia, Zeng, Lingzhen, Zhang, Cheng, and Zhang, Silvia

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The BICEP3 and BICEP Array polarimeters are small-aperture refracting telescopes located at the South Pole designed to measure primordial gravitational wave signatures in the Cosmic Microwave Background (CMB) polarization, predicted by inflation. Constraining the inflationary signal requires not only excellent sensitivity, but also careful control of instrumental systematics. Both instruments use antenna-coupled orthogonally polarized detector pairs, and the polarized sky signal is reconstructed by taking the difference in each detector pair. As a result, the differential response between detectors within a pair becomes an important systematic effect we must control. Additionally, mapping the intensity and polarization response in regions away from the main beam can inform how sidelobe levels affect CMB measurements. Extensive calibration measurements are taken in situ every austral summer for control of instrumental systematics and instrument characterisation. In this work, we detail the set of beam calibration measurements that we conduct on the BICEP receivers, from deep measurements of main beam response to polarized beam response and sidelobe mapping. We discuss the impact of these measurements for instrumental systematics studies and design choices for future CMB receivers., Comment: 13 pages, 7 figures, 1 table, Proceedings paper SPIE 2024

Published
2024

2. Snowmass 2021 CMB-S4 White Paper

Author

Abazajian, Kevork, Abdulghafour, Arwa, Addison, Graeme E., Adshead, Peter, Ahmed, Zeeshan, Ajello, Marco, Akerib, Daniel, Allen, Steven W., Alonso, David, Alvarez, Marcelo, Amin, Mustafa A., Amiri, Mandana, Anderson, Adam, Ansarinejad, Behzad, Archipley, Melanie, Arnold, Kam S., Ashby, Matt, Aung, Han, Baccigalupi, Carlo, Baker, Carina, Bakshi, Abhishek, Bard, Debbie, Barkats, Denis, Barron, Darcy, Barry, Peter S., Bartlett, James G., Barton, Paul, Thakur, Ritoban Basu, Battaglia, Nicholas, Beall, Jim, Bean, Rachel, Beck, Dominic, Belkner, Sebastian, Benabed, Karim, Bender, Amy N., Benson, Bradford A., Besuner, Bobby, Bethermin, Matthieu, Bhimani, Sanah, Bianchini, Federico, Biquard, Simon, Birdwell, Ian, Bischoff, Colin A., Bleem, Lindsey, Bocaz, Paulina, Bock, James J., Bocquet, Sebastian, Boddy, Kimberly K., Bond, J. Richard, Borrill, Julian, Bouchet, Francois R., Brinckmann, Thejs, Brown, Michael L., Bryan, Sean, Buza, Victor, Byrum, Karen, Calabrese, Erminia, Calafut, Victoria, Caldwell, Robert, Carlstrom, John E., Carron, Julien, Cecil, Thomas, Challinor, Anthony, Chan, Victor, Chang, Clarence L., Chapman, Scott, Charles, Eric, Chauvin, Eric, Cheng, Cheng, Chesmore, Grace, Cheung, Kolen, Chinone, Yuji, Chluba, Jens, Cho, Hsiao-Mei Sherry, Choi, Steve, Clancy, Justin, Clark, Susan, Cooray, Asantha, Coppi, Gabriele, Corlett, John, Coulton, Will, Crawford, Thomas M., Crites, Abigail, Cukierman, Ari, Cyr-Racine, Francis-Yan, Dai, Wei-Ming, Daley, Cail, Dart, Eli, Daues, Gregorg, de Haan, Tijmen, Deaconu, Cosmin, Delabrouille, Jacques, Derylo, Greg, Devlin, Mark, Di Valentino, Eleonora, Dierickx, Marion, Dober, Brad, Doriese, Randy, Duff, Shannon, Dutcher, Daniel, Dvorkin, Cora, Dünner, Rolando, Eftekhari, Tarraneh, Eimer, Joseph, Bouhargani, Hamza El, Elleflot, Tucker, Emerson, Nick, Errard, Josquin, Essinger-Hileman, Thomas, Fabbian, Giulio, Fanfani, Valentina, Fasano, Alessandro, Feng, Chang, Ferraro, Simone, Filippini, Jeffrey P., Flauger, Raphael, Flaugher, Brenna, Fraisse, Aurelien A., Frisch, Josef, Frolov, Andrei, Galitzki, Nicholas, Gallardo, Patricio A., Galli, Silvia, Ganga, Ken, Gerbino, Martina, Giannakopoulos, Christos, Gilchriese, Murdock, Gluscevic, Vera, Goeckner-Wald, Neil, Goldfinger, David, Green, Daniel, Grimes, Paul, Grin, Daniel, Grohs, Evan, Gualtieri, Riccardo, Guarino, Vic, Gudmundsson, Jon E., Gullett, Ian, Guns, Sam, Habib, Salman, Haller, Gunther, Halpern, Mark, Halverson, Nils W., Hanany, Shaul, Hand, Emma, Harrington, Kathleen, Hasegawa, Masaya, Hasselfield, Matthew, Hazumi, Masashi, Heitmann, Katrin, Henderson, Shawn, Hensley, Brandon, Herbst, Ryan, Hervias-Caimapo, Carlos, Hill, J. Colin, Hills, Richard, Hivon, Eric, Hlozek, Renée, Ho, Anna, Holder, Gil, Hollister, Matt, Holzapfel, William, Hood, John, Hotinli, Selim, Hryciuk, Alec, Hubmayr, Johannes, Huffenberger, Kevin M., Hui, Howard, nez, Roberto Ibá, Ibitoye, Ayodeji, Ikape, Margaret, Irwin, Kent, Jacobus, Cooper, Jeong, Oliver, Johnson, Bradley R., Johnstone, Doug, Jones, William C., Joseph, John, Jost, Baptiste, Kang, Jae Hwan, Kaplan, Ari, Karkare, Kirit S., Katayama, Nobuhiko, Keskitalo, Reijo, King, Cesiley, Kisner, Theodore, Klein, Matthias, Knox, Lloyd, Koopman, Brian J., Kosowsky, Arthur, Kovac, John, Kovetz, Ely D., Krolewski, Alex, Kubik, Donna, Kuhlmann, Steve, Kuo, Chao-Lin, Kusaka, Akito, Lähteenmäki, Anne, Lau, Kenny, Lawrence, Charles R., Lee, Adrian T., Legrand, Louis, Leitner, Matthaeus, Leloup, Clément, Lewis, Antony, Li, Dale, Linder, Eric, Liodakis, Ioannis, Liu, Jia, Long, Kevin, Louis, Thibaut, Loverde, Marilena, Lowry, Lindsay, Lu, Chunyu, Lubin, Phil, Ma, Yin-Zhe, Maccarone, Thomas, Madhavacheril, Mathew S., Maldonado, Felipe, Mantz, Adam, Marques, Gabriela, Matsuda, Frederick, Mauskopf, Philip, May, Jared, McCarrick, Heather, McCracken, Ken, McMahon, Jeffrey, Meerburg, P. Daniel, Melin, Jean-Baptiste, Menanteau, Felipe, Meyers, Joel, Millea, Marius, Miranda, Vivian, Mitchell, Don, Mohr, Joseph, Moncelsi, Lorenzo, Monzani, Maria Elena, Moshed, Magdy, Mroczkowski, Tony, Mukherjee, Suvodip, Münchmeyer, Moritz, Nagai, Daisuke, Nagarajappa, Chandan, Nagy, Johanna, Namikawa, Toshiya, Nati, Federico, Natoli, Tyler, Nerval, Simran, Newburgh, Laura, Nguyen, Hogan, Nichols, Erik, Nicola, Andrina, Niemack, Michael D., Nord, Brian, Norton, Tim, Novosad, Valentine, O'Brient, Roger, Omori, Yuuki, Orlando, Giorgio, Osherson, Benjamin, Osten, Rachel, Padin, Stephen, Paine, Scott, Partridge, Bruce, Patil, Sanjaykumar, Petravick, Don, Petroff, Matthew, Pierpaoli, Elena, Pilleux, Mauricio, Pogosian, Levon, Prabhu, Karthik, Pryke, Clement, Puglisi, Giuseppe, Racine, Benjamin, Raghunathan, Srinivasan, Rahlin, Alexandra, Raveri, Marco, Reese, Ben, Reichardt, Christian L., Remazeilles, Mathieu, Rizzieri, Arianna, Rocha, Graca, Roe, Natalie A., Rotermund, Kaja, Roy, Anirban, Ruhl, John E., Saba, Joe, Sailer, Noah, Salatino, Maria, Saliwanchik, Benjamin, Sapozhnikov, Leonid, Rao, Mayuri Sathyanarayana, Saunders, Lauren, Schaan, Emmanuel, Schillaci, Alessandro, Schmitt, Benjamin, Scott, Douglas, Sehgal, Neelima, Shandera, Sarah, Sherwin, Blake D., Shirokoff, Erik, Shiu, Corwin, Simon, Sara M., Singari, Baibhav, Slosar, Anze, Spergel, David, Germaine, Tyler St., Staggs, Suzanne T., Stark, Antony A., Starkman, Glenn D., Steinbach, Bryan, Stompor, Radek, Stoughton, Chris, Suzuki, Aritoki, Tajima, Osamu, Tandoi, Chris, Teply, Grant P., Thayer, Gregg, Thompson, Keith, Thorne, Ben, Timbie, Peter, Tomasi, Maurizio, Trendafilova, Cynthia, Tristram, Matthieu, Tucker, Carole, Tucker, Gregory, Umiltà, Caterina, van Engelen, Alexander, van Marrewijk, Joshiwa, Vavagiakis, Eve M., Vergès, Clara, Vieira, Joaquin D., Vieregg, Abigail G., Wagoner, Kasey, Wallisch, Benjamin, Wang, Gensheng, Wang, Guo-Jian, Watson, Scott, Watts, Duncan, Weaver, Chris, Wenzl, Lukas, Westbrook, Ben, White, Martin, Whitehorn, Nathan, Wiedlea, Andrew, Williams, Paul, Wilson, Robert, Winch, Harrison, Wollack, Edward J., Wu, W. L. Kimmy, Xu, Zhilei, Yefremenko, Volodymyr G., Yu, Cyndia, Zegeye, David, Zivick, Jeff, and Zonca, Andrea

Subjects
Astrophysics - Cosmology and Nongalactic Astrophysics, Astrophysics - Instrumentation and Methods for Astrophysics, General Relativity and Quantum Cosmology, High Energy Physics - Experiment, High Energy Physics - Phenomenology
Abstract

This Snowmass 2021 White Paper describes the Cosmic Microwave Background Stage 4 project CMB-S4, which is designed to cross critical thresholds in our understanding of the origin and evolution of the Universe, from the highest energies at the dawn of time through the growth of structure to the present day. We provide an overview of the science case, the technical design, and project plan., Comment: Contribution to Snowmass 2021. arXiv admin note: substantial text overlap with arXiv:1908.01062, arXiv:1907.04473

Published
2022

3. Plastic Laminate Antireflective Coatings for Millimeter-wave Optics in BICEP Array

Author

Dierickx, Marion, Ade, P. A. R., Ahmed, Zeeshan, Amiri, Mandana, Barkats, Denis, Thakur, Ritoban Basu, Bischoff, Colin A., Beck, Dominic, Bock, James J., Buza, Victor, Cheshire IV, James R., Connors, Jake, Cornelison, James, Crumrine, Michael, Cukierman, Ari Jozef, Denison, Edward, Duband, Lionel, Eiben, Miranda, Fatigoni, Sofia, Filippini, Jeff P., Giannakopoulos, Christos, Goeckner-Wald, Neil, Goldfinger, David, Grayson, James A., Grimes, Paul, Hall, Grantland, Halal, George, Halpern, Mark, Hand, Emma, Harrison, Sam A., Henderson, Shawn, Hildebrandt, Sergi, Hilton, Gene C., Hubmayr, Johannes, Hui, Howard, Irwin, Kent D., Kang, Jae Hwan, Karkare, Kirit S., Kefeli, Sinan, Kovac, J. M., Kuo, Chao-Lin, Lau, King, Leitch, Erik M., Lennox, Amber, Megerian, . G., Minutolo, Lorenzo, Moncelsi, Lorenzo, Nakato, Yuka, Namikawa, Toshiya, Nguyen, H. T., O'brient, Roger, Palladino, Steven, Petroff, Matthew, Precup, Nathan, Prouve, Thomas, Pryke, Clement, Racine, Benjamin, Reintsema, Carl D., Santalucia, Destiny, Schillaci, Alessandro, Schmitt, Benjamin, Singari, Baibhav, Soliman, Ahmed, Germaine, Tyler St, Steinbach, Bryan, Sudiwala, Rashmi, Thompson, Keith L., Tucker, Carole, Turner, Anthony D., Umiltà, Caterina, Verges, Clara, Vieregg, Abigail G., Wandui, Albert, Weber, Alexis C., Wiebe, Don, Willmert, Justin, Wu, Wai Ling K., Yang, Hung-I, Yoon, Ki Won, Young, Edward, Yu, Cyndia, Zeng, Lingzhen, Zhang, Cheng, and Zhang, Silvia

Subjects
Astrophysics - Instrumentation and Methods for Astrophysics
Abstract

The BICEP/Keck series of experiments target the Cosmic Microwave Background at degree-scale resolution from the South Pole. Over the next few years, the "Stage-3" BICEP Array (BA) telescope will improve the program's frequency coverage and sensitivity to primordial B-mode polarization by an order of magnitude. The first receiver in the array, BA1, began observing at 30/40 GHz in early 2020. The next two receivers, BA2 and BA3, are currently being assembled and will map the southern sky at frequencies ranging from 95 GHz to 150 GHz. Common to all BA receivers is a refractive, on-axis, cryogenic optical design that focuses microwave radiation onto a focal plane populated with antenna-coupled bolometers. High-performance antireflective coatings up to 760 mm in aperture are needed for each element in the optical chain, and must withstand repeated thermal cycles down to 4 K. Here we present the design and fabrication of the 30/40 GHz anti-reflection coatings for the recently deployed BA1 receiver, then discuss laboratory measurements of their reflectance. We review the lamination method for these single- and dual-layer plastic coatings with indices matched to various polyethylene, nylon and alumina optics. We also describe ongoing efforts to optimize coatings for the next BA cryostats, which may inform technological choices for future Small-Aperture Telescopes of the CMB "Stage 4" experiment., Comment: 8 pages, 4 figures. Submitted to Journal of Low Temperature Physics

Published
2021
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4. WISE/NEOWISE observations of comet 103P/Hartley 2

Author

Bauer, James M., Walker, Russell G., Mainzer, A. K., Masiero, Joseph R., Grav, Tommy, Dailey, John W., McMillan, Robert S., Lisse, Carey M., Fernández, Yan R., Meech, Karen J., Pittichova, Jana, Blauvelt, Erin K., Masci, Frank J., A'Hearn, Michael F., Cutri, Roc M., Scotti, James V., Tholen, David J., DeBaun, Emily, Wilkins, Ashlee, Hand, Emma, Wright, Edward L., and Collaboration, the WISE

Subjects
Astrophysics - Earth and Planetary Astrophysics
Abstract

We report results based on mid-infrared photometry of comet 103P/Hartley 2 taken during May 4-13, 2010 (when the comet was at a heliocentric distance of 2.3 AU, and an observer distance of 2.0 AU) by the Wide-field Infrared Survey Explorer (Wright et al. 2010). Photometry of the coma at 22 microns and data from the University of Hawaii 2.2-m telescope obtained on May 22, 2010 provide constraints on the dust particle size distribution, dlogn/dlogm, yielding power-law slope values of alpha = -0.97 +/- 0.10, steeper than that found for the inbound particle fluence during the Stardust encounter of comet 81P/Wild 2 (Green et al. 2004). The extracted nucleus signal at 12 microns is consistent with a body of average spherical radius of 0.6 +/- 0.2 km (one standard deviation), assuming a beaming parameter of 1.2. The 4.6 micron-band signal in excess of dust and nucleus reflected and thermal contributions may be attributed to carbon monoxide or carbon dioxide emission lines and provides limits and estimates of species production. Derived carbon dioxide coma production rates are 3.5(+/- 0.9) \times 10^24 molecules per second. Analyses of the trail signal present in the stacked image with an effective exposure time of 158.4 seconds yields optical-depth values near 9 x 10^-10 at a delta mean anomaly of 0.2 deg trailing the comet nucleus, in both 12 and 22 {\mu}m bands. A minimum chi-squared analysis of the dust trail position yields a beta-parameter value of 1.0 x10^-4, consistent with a derived mean trail-grain diameter of 1.1/{\rho} cm for grains of {\rho} g/cm^3 density. This leads to a total detected trail mass of at least 4 x 10^10 {\rho} kg., Comment: Accepted to ApJ

Published
2011
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5. Results and Limits of Time Division Multiplexing for the BICEP Array High Frequency Receivers

Author

Fatigoni, Sofia, primary, Ade, Peter A.R., additional, Zeeshan, Ahmed, additional, Amiri, Mandana, additional, Barkats, Denis, additional, Thakur, Ritoban Basu, additional, Bischoff, Colin A., additional, Beck, Dominic, additional, Bock, James J., additional, Buza, Victor, additional, Cheshire, James R., additional, Connors, Jake, additional, Cornelison, James, additional, Crumrine, Michael, additional, Cukierman, Ari Josef, additional, Denison, Edward, additional, Dierickx, Marion, additional, Duband, Lionel, additional, Elben, Miranda, additional, Filippini, Jeff P., additional, Fortes, Antonio, additional, Gao, Min, additional, Giannakopoulos, Christos, additional, Goeckner-Wald, Neil, additional, Goldfinger, David C., additional, Grayson, James A., additional, Grimes, Paul, additional, Hall, Grantland, additional, Halal, George, additional, Halpern, Mark, additional, Hand, Emma, additional, Harrison, Sam A., additional, Henderson, Shawn, additional, Hildebrandt, Sergi, additional, Hilton, Gene C., additional, Hubmayr, Johannes, additional, Hui, Howard, additional, Irwin, Kent D., additional, Kang, Jae Hwan, additional, Karkare, Kirit S., additional, Kefeli, Sinan, additional, Kovac, John M., additional, Kuo, Chao-Lin, additional, Lau, King, additional, Lennox, Amber, additional, Liu, Tongtian, additional, Megerian, Koko G., additional, Miller, Oliver, additional, Minutolo, Lorenzo, additional, Moncelsi, Lorenzo, additional, Nakato, Yuka, additional, Nguyen, Hien T., additional, O'Brient, Roger, additional, Palladino, Steven, additional, Petroff, Matthew A., additional, Polish, Annie, additional, Prouve, Thomas, additional, Pryke, Clement, additional, Racine, Benjamin, additional, Reintsema, Carl D., additional, Romand, Thibault, additional, Salatino, Maria, additional, Schillaci, Alessandro, additional, Schmitt, Benjamin, additional, Singari, Baibhav, additional, Soliman, Ahmed, additional, Germaine, Tyler St, additional, Steiger, Aaron, additional, Steinbach, Bryan, additional, Sudiwala, Rashmi, additional, Thompson, Keith L., additional, Tsai, Calvin, additional, Tucker, Carole, additional, Turner, Anthony D., additional, Umiltà, Caterina, additional, Verges, Clara, additional, Wandui, Albert, additional, Weber, Alexis C., additional, Wiebe, Don, additional, Willmert, Justin, additional, Wu, Wai Ling K., additional, Yang, Hung-I, additional, Young, Edward, additional, Yu, Cyndia, additional, Zeng, Lingzhen, additional, Zhang, Cheng, additional, and Zhang, Silvia, additional

Published
2023
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6. Improved polarization calibration of the BICEP3 CMB polarimeter at the South Pole

Author

Cornelison, James, primary, Verges, Clara, additional, Ade, P A., additional, Ahmed, Zeeshan, additional, Amiri, Mandana, additional, Barkats, Denis, additional, Basu Thakur, Ritoban, additional, Beck, Dominic, additional, Bischoff, Colin A., additional, Bock, James J., additional, Buza, Victor, additional, Cheshire, James R., additional, Connors, Jake, additional, Crumrine, Michael, additional, Cukierman, Ari Jozef, additional, Denison, Edward, additional, Dierickx, Marion, additional, Duband, Lionel, additional, Eiben, Miranda, additional, Fatigoni, Sofia, additional, Filippini, Jeff P., additional, Giannakopoulos, Christos, additional, Goeckner-Wald, Neil, additional, Goldfinger, David C., additional, Grayson, James A., additional, Grimes, Paul, additional, Hall, Grantland, additional, Halal, George, additional, Halpern, Mark, additional, Hand, Emma, additional, Harrison, Sam A., additional, Henderson, Shawn, additional, Hildebrandt, Sergi, additional, Hilton, Gene C., additional, Hubmayr, Johannes, additional, Hui, Howard, additional, Irwin, Kent D., additional, Kang, Jae Hwan, additional, Karkare, Kirit S., additional, Kefeli, Sinan, additional, Kovac, John, additional, Kuo, Chao-Lin, additional, Lau, King, additional, Leitch, Erik M., additional, Lennox, Amber, additional, Liu, Tongtian, additional, Look, Karsten, additional, Megerian, K(oko). G., additional, Minutolo, Lorenzo, additional, Moncelsi, Lorenzo, additional, Nakato, Yuka, additional, Namikawa, Toshiya, additional, Nguyen, H. T., additional, O'brient, Roger, additional, Palladino, Steven, additional, Petroff, Matthew, additional, Prouve, Thomas, additional, Pryke, Clement, additional, Racine, Benjamin, additional, Reintsema, Carl D., additional, Salatino, Maria, additional, Schillaci, Alessandro, additional, Schmitt, Benjamin, additional, Singari, Baibhav, additional, Soliman, Ahmed, additional, St Germaine, Tyler, additional, Steinbach, Bryan, additional, Sudiwala, Rashmi, additional, Thompson, Keith L., additional, Tsai, Calvin, additional, Tucker, Carole, additional, Turner, Anthony D., additional, Umiltà, Caterina, additional, Vieregg, Abigail G., additional, Wandui, Albert, additional, Weber, Alexis C., additional, Wiebe, Don, additional, Willmert, Justin, additional, Wu, Wai Ling K., additional, Yang, Hung-I, additional, Yoon, Ki Won, additional, Young, Edward, additional, Yu, Cyndia, additional, Zeng, Lingzhen, additional, Zhang, Cheng, additional, and Zhang, Silvia, additional

Published
2022
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7. Thermal testing for cryogenic CMB instrument optical design

Author

Goldfinger, David C., primary, Ade, Peter A. R., additional, Ahmed, Zeeshan, additional, Amiri, Mandana, additional, Barkats, Denis, additional, Basu Thakur, Ritoban, additional, Beck, Dominic, additional, Bischoff, Colin A., additional, Bock, James J., additional, Buza, Victor, additional, Cheshire, James R., additional, Connors, Jake, additional, Cornelison, James, additional, Crumrine, Michael, additional, Cukierman, Ari J., additional, Denison, Edward V., additional, Dierickx, Marion I., additional, Duband, Lionel, additional, Eiben, Miranda, additional, Fatigoni, Sofia, additional, Filippini, Jeff P., additional, Giannakopoulos, Christos, additional, Goeckner-Wald, Neil, additional, Grayson, James A., additional, Grimes, Paul K., additional, Hall, Grantland, additional, Halal, George, additional, Halpern, Mark, additional, Hand, Emma, additional, Harrison, Sam A., additional, Henderson, Shawn, additional, Hildebrandt, Sergi R., additional, Hilton, Gene C., additional, Hubmayr, Johannes, additional, Hui, Howard, additional, Irwin, Kent D., additional, Kang, Jae Hwan, additional, Karkare, Kirit S., additional, Kefeli, Sinan, additional, Kovac, John M., additional, Kuo, Chao-Lin, additional, Lau, King, additional, Leitch, Erik M., additional, Lennox, Amber, additional, Liu, Tongtian, additional, Megerian, Krikor G., additional, Minutolo, Lorenzo, additional, Moncelsi, Lorenzo, additional, Nakato, Yuka, additional, Namikawa, Toshiya, additional, Nguyen, Hien T., additional, O'Brient, Roger, additional, Palladino, Steven M., additional, Petroff, Matthew, additional, Prouvé, Thomas, additional, Pryke, Clement L., additional, Racine, Benjamin, additional, Reintsema, Carl D., additional, Salatino, Maria, additional, Schillaci, Alessandro, additional, Schmitt, Benjamin L., additional, Singari, Baibhav, additional, Soliman, Ahmed, additional, Smith, Amanda G., additional, St. Germaine, Tyler, additional, Steinbach, Bryan, additional, Sudiwala, Rashmi V., additional, Thompson, Keith L., additional, Tsai, Calvin, additional, Tucker, Carole E., additional, Turner, Anthony D., additional, Umiltà, Caterina, additional, Verges, Clara, additional, Vieregg, Abigail G., additional, Wandui, Albert K., additional, Weber, Alexis C., additional, Wiebe, Don V., additional, Willmert, Justin, additional, Wu, Wai Ling K., additional, Yang, Hung-I, additional, Yoon, Ki Won, additional, Young, Edward, additional, Yu, Cyndia, additional, Zeng, Lingzhen, additional, Zhang, Cheng, additional, and Zhang, Silvia, additional

Published
2022
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8. Linkages Between Community Mental Health Services, Homelessness, and Inmates and Probationers with Severe Mental Illness: An Evidence-Based Assessment

Author

Bramham, Henry, primary, Deaver, Claire, additional, Domnick, Sean, additional, Hand, Emma, additional, Ledwith, Emily, additional, O'Neill, Noah, additional, Weiler, Carolyn, additional, Smith, Michael, additional, White, K. Preston, additional, Alonzi, Loreto Peter, additional, and Goodloe, Neal, additional

Published
2020
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12. ILC Analysis of BICEP2 and Keck Array CMB Polarization Data through the 2015 Observing Season

Author

Hand, Emma

Subjects
Astrophysics, Cosmic Microwave Background, Likelihood, Internal Linear Combination, Inflation, Foregrounds, ILC
Abstract

The cosmic microwave background (CMB) is a snapshot of the universe at recombination, the moment when the universe became transparent. Understanding the CMB could allow us to constrain or rule out aspects of inflation theory, which suggests that the Universe underwent a period of rapid expansion mere moments after the Big Bang. Specifically, we hope to detect primordial gravitational waves (PGW), an as yet unobserved phenomenon predicted by many inflationary models. BICEP/Keck is an experiment based at the South Pole with telescopes that are specified to observe B-mode polarization patterns caused by PGW at microwave wavelengths. The tensor-to-scalar ratio r is a parameter which if constrained could provide indirect evidence of PGWs. Presented is the work I have done in an internal linear combination (ILC) component separation method to separate the CMB signal from galactic foregrounds while minimizing noise, and the likelihood analysis I performed with the ILC results in an effort to constrain r.

Published
2023

13. Thermal testing for cryogenic CMB instrument optical design

Author

Goldfinger, David C., Ade, Peter A. R., Ahmed, Zeeshan, Amiri, Mandana, Barkats, Denis, Basu Thakur, Ritoban, Beck, Dominic, Bischoff, Colin A., Bock, James J., Buza, Victor, Cheshire, James R., Connors, Jake, Cornelison, James, Crumrine, Michael, Cukierman, Ari J., Denison, Edward V., Dierickx, Marion I., Duband, Lionel, Eiben, Miranda, Fatigoni, Sofia, Filippini, Jeff P., Giannakopoulos, Christos, Goeckner-Wald, Neil, Grayson, James A., Grimes, Paul K., Hall, Grantland, Halal, George, Halpern, Mark, Hand, Emma, Harrison, Sam A., Henderson, Shawn, Hildebrandt, Sergi R., Hilton, Gene C., Hubmayr, Johannes, Hui, Howard, Irwin, Kent D., Kang, Jae Hwan, Karkare, Kirit S., Kefeli, Sinan, Kovac, John M., Kuo, Chao-Lin, Lau, King, Leitch, Erik M., Lennox, Amber, Liu, Tongtian, Megerian, Krikor G., Minutolo, Lorenzo, Moncelsi, Lorenzo, Nakato, Yuka, Namikawa, Toshiya, Nguyen, Hien T., O'Brient, Roger, Palladino, Steven M., Petroff, Matthew, Prouvé, Thomas, Pryke, Clement L., Racine, Benjamin, Reintsema, Carl D., Salatino, Maria, Schillaci, Alessandro, Schmitt, Benjamin L., Singari, Baibhav, Soliman, Ahmed, Smith, Amanda G., St. Germaine, Tyler, Steinbach, Bryan, Sudiwala, Rashmi V., Thompson, Keith L., Tsai, Calvin, Tucker, Carole E., Turner, Anthony D., Umiltà, Caterina, Verges, Clara, Vieregg, Abigail G., Wandui, Albert K., Weber, Alexis C., Wiebe, Don V., Willmert, Justin, Wu, Wai Ling K., Yang, Hung-I, Yoon, Ki Won, Young, Edward, Yu, Cyndia, Zeng, Lingzhen, Zhang, Cheng, Zhang, Silvia, Zmuidzinas, Jonas, Gao, Jian-Rong, Goldfinger, David C., Ade, Peter A. R., Ahmed, Zeeshan, Amiri, Mandana, Barkats, Denis, Basu Thakur, Ritoban, Beck, Dominic, Bischoff, Colin A., Bock, James J., Buza, Victor, Cheshire, James R., Connors, Jake, Cornelison, James, Crumrine, Michael, Cukierman, Ari J., Denison, Edward V., Dierickx, Marion I., Duband, Lionel, Eiben, Miranda, Fatigoni, Sofia, Filippini, Jeff P., Giannakopoulos, Christos, Goeckner-Wald, Neil, Grayson, James A., Grimes, Paul K., Hall, Grantland, Halal, George, Halpern, Mark, Hand, Emma, Harrison, Sam A., Henderson, Shawn, Hildebrandt, Sergi R., Hilton, Gene C., Hubmayr, Johannes, Hui, Howard, Irwin, Kent D., Kang, Jae Hwan, Karkare, Kirit S., Kefeli, Sinan, Kovac, John M., Kuo, Chao-Lin, Lau, King, Leitch, Erik M., Lennox, Amber, Liu, Tongtian, Megerian, Krikor G., Minutolo, Lorenzo, Moncelsi, Lorenzo, Nakato, Yuka, Namikawa, Toshiya, Nguyen, Hien T., O'Brient, Roger, Palladino, Steven M., Petroff, Matthew, Prouvé, Thomas, Pryke, Clement L., Racine, Benjamin, Reintsema, Carl D., Salatino, Maria, Schillaci, Alessandro, Schmitt, Benjamin L., Singari, Baibhav, Soliman, Ahmed, Smith, Amanda G., St. Germaine, Tyler, Steinbach, Bryan, Sudiwala, Rashmi V., Thompson, Keith L., Tsai, Calvin, Tucker, Carole E., Turner, Anthony D., Umiltà, Caterina, Verges, Clara, Vieregg, Abigail G., Wandui, Albert K., Weber, Alexis C., Wiebe, Don V., Willmert, Justin, Wu, Wai Ling K., Yang, Hung-I, Yoon, Ki Won, Young, Edward, Yu, Cyndia, Zeng, Lingzhen, Zhang, Cheng, Zhang, Silvia, Zmuidzinas, Jonas, and Gao, Jian-Rong

Abstract

Observations of the Cosmic Microwave Background rely on cryogenic instrumentation with cold detectors, readout, and optics providing the low noise performance and instrumental stability required to make more sensitive measurements. It is therefore critical to optimize all aspects of the cryogenic design to achieve the necessary performance, with low temperature components and acceptable system cooling requirements. In particular, we will focus on our use of thermal filters and cold optics, which reduce the thermal load passed along to the cryogenic stages. To test their performance, we have made a series of in situ measurements while integrating the third receiver for the BICEP Array telescope. In addition to characterizing the behavior of this receiver, these measurements continue to refine the models that are being used to inform design choices being made for future instruments.

14. Improved polarization calibration of the BICEP3 CMB polarimeter at the South Pole

Author

Cornelison, James, Verges, Clara, Ade, P A., Ahmed, Zeeshan, Amiri, Mandana, Barkats, Denis, Basu Thakur, Ritoban, Beck, Dominic, Bischoff, Colin A., Bock, James J., Buza, Victor, Cheshire, James R., Connors, Jake, Crumrine, Michael, Cukierman, Ari Jozef, Denison, Edward, Dierickx, Marion, Duband, Lionel, Eiben, Miranda, Fatigoni, Sofia, Filippini, Jeff P., Giannakopoulos, Christos, Goeckner-Wald, Neil, Goldfinger, David C., Grayson, James A., Grimes, Paul, Hall, Grantland, Halal, George, Halpern, Mark, Hand, Emma, Harrison, Sam A., Henderson, Shawn, Hildebrandt, Sergi, Hilton, Gene C., Hubmayr, Johannes, Hui, Howard, Irwin, Kent D., Kang, Jae Hwan, Karkare, Kirit S., Kefeli, Sinan, Kovac, John, Kuo, Chao-Lin, Lau, King, Leitch, Erik M., Lennox, Amber, Liu, Tongtian, Look, Karsten, Megerian, K(oko). G., Minutolo, Lorenzo, Moncelsi, Lorenzo, Nakato, Yuka, Namikawa, Toshiya, Nguyen, H. T., O'brient, Roger, Palladino, Steven, Petroff, Matthew, Prouve, Thomas, Pryke, Clement, Racine, Benjamin, Reintsema, Carl D., Salatino, Maria, Schillaci, Alessandro, Schmitt, Benjamin, Singari, Baibhav, Soliman, Ahmed, St Germaine, Tyler, Steinbach, Bryan, Sudiwala, Rashmi, Thompson, Keith L., Tsai, Calvin, Tucker, Carole, Turner, Anthony D., Umiltà, Caterina, Vieregg, Abigail G., Wandui, Albert, Weber, Alexis C., Wiebe, Don, Willmert, Justin, Wu, Wai Ling K., Yang, Hung-I, Yoon, Ki Won, Young, Edward, Yu, Cyndia, Zeng, Lingzhen, Zhang, Cheng, Zhang, Silvia, Zmuidzinas, Jonas, Gao, Jian-Rong, Cornelison, James, Verges, Clara, Ade, P A., Ahmed, Zeeshan, Amiri, Mandana, Barkats, Denis, Basu Thakur, Ritoban, Beck, Dominic, Bischoff, Colin A., Bock, James J., Buza, Victor, Cheshire, James R., Connors, Jake, Crumrine, Michael, Cukierman, Ari Jozef, Denison, Edward, Dierickx, Marion, Duband, Lionel, Eiben, Miranda, Fatigoni, Sofia, Filippini, Jeff P., Giannakopoulos, Christos, Goeckner-Wald, Neil, Goldfinger, David C., Grayson, James A., Grimes, Paul, Hall, Grantland, Halal, George, Halpern, Mark, Hand, Emma, Harrison, Sam A., Henderson, Shawn, Hildebrandt, Sergi, Hilton, Gene C., Hubmayr, Johannes, Hui, Howard, Irwin, Kent D., Kang, Jae Hwan, Karkare, Kirit S., Kefeli, Sinan, Kovac, John, Kuo, Chao-Lin, Lau, King, Leitch, Erik M., Lennox, Amber, Liu, Tongtian, Look, Karsten, Megerian, K(oko). G., Minutolo, Lorenzo, Moncelsi, Lorenzo, Nakato, Yuka, Namikawa, Toshiya, Nguyen, H. T., O'brient, Roger, Palladino, Steven, Petroff, Matthew, Prouve, Thomas, Pryke, Clement, Racine, Benjamin, Reintsema, Carl D., Salatino, Maria, Schillaci, Alessandro, Schmitt, Benjamin, Singari, Baibhav, Soliman, Ahmed, St Germaine, Tyler, Steinbach, Bryan, Sudiwala, Rashmi, Thompson, Keith L., Tsai, Calvin, Tucker, Carole, Turner, Anthony D., Umiltà, Caterina, Vieregg, Abigail G., Wandui, Albert, Weber, Alexis C., Wiebe, Don, Willmert, Justin, Wu, Wai Ling K., Yang, Hung-I, Yoon, Ki Won, Young, Edward, Yu, Cyndia, Zeng, Lingzhen, Zhang, Cheng, Zhang, Silvia, Zmuidzinas, Jonas, and Gao, Jian-Rong

Abstract

The BICEP3 Polarimeter is a small aperture, refracting telescope, dedicated to the observation of the Cosmic Microwave Background (CMB) at 95GHz. It is designed to target degree angular scale polarization patterns, in particular the very-much-sought-after primordial B-mode signal, which is a unique signature of cosmic inflation. The polarized signal from the sky is reconstructed by differencing co-localized, orthogonally polarized superconducting Transition Edge Sensor (TES) bolometers. In this work, we present absolute measurements of the polarization response of the detectors for more than approximately 800 functioning detector pairs of the BICEP3 experiment, out of a total of approximately 1000. We use a specifically designed Rotating Polarized Source (RPS) to measure the polarization response at multiple source and telescope boresight rotation angles, to fully map the response over 360 degrees. We present here polarization properties extracted from on-site calibration data taken in January 2022. A similar calibration campaign was performed in 2018, but we found that our constraint was dominated by systematics on the level of approximately 0.5° . After a number of improvements to the calibration set-up, we are now able to report a significantly lower level of systematic contamination. In the future, such precise measurements will be used to constrain physics beyond the standard cosmological model, namely cosmic birefringence.

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