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1. Machine Learning for Beam Controls

Author

Geng, Zheqiao, Simrock, Stefan, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Geng, Zheqiao, and Simrock, Stefan

Published
2023
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2. Beam Optimization

Author

Geng, Zheqiao, Simrock, Stefan, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Geng, Zheqiao, and Simrock, Stefan

Published
2023
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3. Introduction

Author

Geng, Zheqiao, Simrock, Stefan, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Geng, Zheqiao, and Simrock, Stefan

Published
2023
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4. Beam Feedback Control

Author

Geng, Zheqiao, Simrock, Stefan, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Geng, Zheqiao, and Simrock, Stefan

Published
2023
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5. Introduction

Author

Simrock, Stefan, Geng, Zheqiao, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Simrock, Stefan, and Geng, Zheqiao

Published
2022
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6. RF System Models

Author

Simrock, Stefan, Geng, Zheqiao, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Simrock, Stefan, and Geng, Zheqiao

Published
2022
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7. Noise in RF Systems

Author

Simrock, Stefan, Geng, Zheqiao, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Simrock, Stefan, and Geng, Zheqiao

Published
2022
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8. Timing and Synchronization

Author

Simrock, Stefan, Geng, Zheqiao, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Simrock, Stefan, and Geng, Zheqiao

Published
2022
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9. RF Detection and Actuation

Author

Simrock, Stefan, Geng, Zheqiao, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Simrock, Stefan, and Geng, Zheqiao

Published
2022
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10. RF Control Strategy

Author

Simrock, Stefan, Geng, Zheqiao, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Simrock, Stefan, and Geng, Zheqiao

Published
2022
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11. RF Field Control

Author

Simrock, Stefan, Geng, Zheqiao, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Simrock, Stefan, and Geng, Zheqiao

Published
2022
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12. LLRF Applications

Author

Simrock, Stefan, Geng, Zheqiao, Chao, Alexander, Series Editor, Oide, Katsunobu, Series Editor, Riegler, Werner, Series Editor, Shiltsev, Vladimir, Series Editor, Zimmermann, Frank, Series Editor, Simrock, Stefan, and Geng, Zheqiao

Published
2022
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33. MINT, an ITER Tool for Interactive Visualization of Data

Author

Abadie, Lana, Carannante, Giuseppe, Kalsi, Sukhmeet Singh, Makowski, Dariusz, Mazur, Piotr, Neto, Andre, Nunes, Isabel, Panchumarti, Jaswant, Perek, Piotr, Pinches, Simon, Simrock, Stefan, and Tsalas, Maximos

Subjects
User Interfaces and User eXperience (UX), Accelerator Physics
Abstract

ITER will produce large volumes of data that need to be visualized and analyzed. This paper describes the development of a graphical data visualization and exploration tool, MINT (Make Informative and Nice Trends), for plant engineers, operators and physicists. It describes the early development phase from requirements capture to first release covering the mistakes, lessons learnt and future steps. The requirements were collected by interviewing the various stakeholders. The initial neglect of the architecture and user-friendliness turned out to be key points when developing such a tool for a project with a long lifetime like ITER. Modular architecture and clear definition of generic interfaces (abstraction layer) is crucial for such a long lifetime project and makes it ready for future adaptations to new plotting, processing and GUI libraries. The MINT application is based upon the development of an independent plotting library, which acts as a wrapper to the underlying graphical library. This allows scientists and engineers to develop their own specific tools, which are immune to changes of graphical library. The development based on Python uses Qt5 as the visual backend., Proceedings of the 18th International Conference on Accelerator and Large Experimental Physics Control Systems, ICALEPCS2021, Shanghai, China

Published
2022
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36. Interfaces and communication protocols in ATCA-based LLRF control systems

Author

Makowski, Dariusz, Koprek, Waldemar, Jezynski, Tomasz, Piotrowski, Adam, Jablofiski, Grzegorz, Jalmuzna, Wojciech, and Simrock, Stefan

Subjects
Lasers, Control systems, Computer network protocols, Laser, Protocol, Business, Electronics, Electronics and electrical industries
Published
2009

37. Readout system for cost-effective radiation monitoring system

Author

Makowski, Dariusz, Jablonski, Grzegorz, Grecki, Mariusz, Mielczarek, Jakub, Napieralski, Andrzej, Simrock, Stefan, and Mukherjee, Bhaskar

Subjects
Circuit components -- Analysis, Electrons -- Analysis, Semiconductor device, Business, Electronics, Electronics and electrical industries
Abstract

Bremsstrahlung gamma radiation and photoneutrons are predominantly produced during the operation of high-energy electron linear accelerators. Therefore, generated radiation could cause radiation damage of electronic devices installed in the accelerator tunnel. A real-time radiation monitoring system RadMon has been designed to monitor both types of radiation at crucial spots inside a free electron laser FLASH. Several different versions of readout systems were designed and tested to choose the most suitable architecture for the cost.effective readout of the radiation monitoring system RadMon. Index Terms--Linear accelerator, neutron fluence, radiation tolerant system, single event upset.

Published
2007

39. A distributed system for radiation monitoring at linear accelerators

Author

Makowski, Dariusz, Grecki, Mariusz, Napieralski, Andrzej, Simrock, Stefan, and Mukherjee, Bhaskar

Subjects
Linear accelerators -- Design and construction, Linear accelerators -- Research, Radiation -- Measurement, Radiation -- Research, Business, Electronics, Electronics and electrical industries
Abstract

This paper discusses a system for an on-line neutron fluence monitoring at linear accelerators. The system consists of a SRAM-based detector and a radiation-tolerant read-out system. The neutron fluence was measured in several locations of the accelerator. Monitoring of the radiation environment in an accelerator tunnel is necessary to assure reliable long-term operation of electronic systems placed in the tunnel. Monitoring of the chamber is especially important during the design stage of a linear accelerator. The new design of 20 GeV linear accelerator X-ray Free Electron Laser (X-FEL) is currently approved for construction at DESY Research Centre in Hamburg [1], [2]. The presented paper is based on our research and experimental measurement carried out at 1.2 GeV superconducting electron linac driving the Vacuum UltraViolet Free Electron Laser (VUV-FEL). The application of a pair of TLD-700 and TLD-500 or superheated emulsion (bubble) dosimeters enables the supervision of neutron fluence in accelerators [3]. This process requires continuous and arduous calibration of TLDs, therefore this method is not convenient. Moreover, it is impossible to monitor the radiation environment in real-time. The presented system fills the market niche of real-time neutron monitoring for high-energy accelerators. Neutron fluence and gamma dose measured in this way can be used for the detailed analysis of the VUV-FEL or X-FEL environments. Monitoring of the radioactive area in a linear accelerator tunnel could be helpful to the diagnosis and reduction of beam losses [4], [5]. We have conducted experiments with the distributed system dedicated to neutron flux measurement at the DESY Research Centre in Hamburg. The devices were exposed to a neutron field from an Americium-Beryllium (n, a) source [sup.241]AmBe. The systems were installed in two accelerators: Linac H and VUV-FEL. Index Terms--Linear accelerator, neutron fluence, single event effect, single event upset, static random access memory.

Published
2006

45. Preliminary Design Development of ITER X-ray Survey Spectrometer

Author

Varshney, Sanjeev, primary, Kumar, Siddharth, additional, Mishra, Sapna, additional, Yadav, Namita, additional, Subhush, P V, additional, Chaitanya, T S, additional, Jha, Shivakant, additional, Kumar, Vinay, additional, Barnsley, Robin, additional, Bernascolle, Philippe, additional, Casal, Natalia, additional, Bertschinger, Gunter, additional, Simrock, Stefan, additional, Drevon, Jean-Marc, additional, and Walsh, Michael, additional

Published
2017
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48. Maturity assessment of ITER diagnostics plant instrumentation and control design

Author

Simrock, Stefan, primary, Abadie, Lana, additional, Barnsley, Robin, additional, Bauvir, Bertrand, additional, Bertalot, Luciano, additional, Makijarvi, Petri, additional, Park, Mikyung, additional, Reichle, Roger, additional, Stepanov, Denis, additional, Vayakis, George, additional, Wallander, Anders, additional, Walsh, Michael, additional, Winter, Axel, additional, Yonekawa, Izuru, additional, Li, Zhao, additional, Yamamoto, Tsuyoshi, additional, Varshney, Sanjeev, additional, Choi, Jihyun, additional, Mironov, Ekaterina, additional, Neto, Andre, additional, DeVan, Bill, additional, Freer, Eva, additional, Patil, Prabhakant, additional, Annigeri, Manojkumar, additional, Jablonski, Grzegorz, additional, Makowski, Dariusz, additional, Mielczarek, Aleksander, additional, Perek, Piotr, additional, Orlikowski, Mariusz, additional, Bercic, Matjaz, additional, Zagar, Klemen, additional, and Martin, Vincent, additional

Published
2015
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50. Optimization of Filling Procedure for TESLA-type Cavities for Klystron RF Power Minimization of European XFEL

Author

Ayvazyan, Valeri, Choroba, Stefan, Geng, Zheqiao, Petrosyan, Gevorg, Simrock, Stefan, and Vogel, Vladimir

Subjects
T25 Low Level RF, 07 Accelerator Technology, Accelerator Physics
Abstract

The Free Electron Laser in Hamburg (FLASH) is a user facility providing high brilliant laser light for experiments. It is also a unique facility for testing the superconducting accelerator technologies. FLASH cavities are operating at pulsed mode. There is a filling stage to build the RF voltage in the cavities and then follow a flattop for beam operation. By the limitation of the klystron pulse length the filling time of the cavities is limited to several hundred microseconds. In order to fill the cavities to the dedicated voltage usually large RF power is required for the filling stage. For European XFEL during RF operation the klystrons will be working quite near the saturation point for better efficiency. So lowering the unnecessary klystron peak power under closed loop operation is very important for close-limitation operation. The paper will present the method which allows decreasing the required klystron peak power as well as the reflected power by filling the cavity in resonance. Simulation results will be presented as well as experimental demonstrations at FLASH., Proceedings of the 1st International Particle Accelerator Conference, IPAC2010, Kyoto, Japan

Published
2010
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