LOM and HOM damping study in a superconducting deflecting cavity for ALS at LBNL
Superconducting deflecting cavities can be used in synchrotron light source to generate subpicosecond X-ray pulses while the impedance of the lower order modes （LOM） and higher order modes （HOM） in the cavity should be kept below an accepted level to avoid beam instability. These modes can be damped...
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| Published in | Chinese physics C Vol. 32; no. 3; pp. 205 - 208 |
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| Main Author | |
| Format | Journal Article |
| Language | English |
| Published |
United States
IOP Publishing
01.03.2008
Department of Engineering Physics, Tsinghua University, Beijing 100084, China%Lawrence Berkeley National Lahoratory, CA 94720, USA |
| Subjects | |
| Online Access | Get full text |
| ISSN | 1674-1137 2058-6132 0254-3052 2058-6132 |
| DOI | 10.1088/1674-1137/32/3/009 |
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| Abstract | Superconducting deflecting cavities can be used in synchrotron light source to generate subpicosecond X-ray pulses while the impedance of the lower order modes （LOM） and higher order modes （HOM） in the cavity should be kept below an accepted level to avoid beam instability. These modes can be damped by adding waveguide on beam pipe. Detailed simulation of Q in CST Microwave Studio is introduced and experiment results on an aluminum model cavity with damping waveguide are reported to make a comparison. |
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| AbstractList | Superconducting deflecting cavities can be used in synchrotron light source to generate subpicosecond X-ray pulses while the impedance of the lower order modes （LOM） and higher order modes （HOM） in the cavity should be kept below an accepted level to avoid beam instability. These modes can be damped by adding waveguide on beam pipe. Detailed simulation of Q in CST Microwave Studio is introduced and experiment results on an aluminum model cavity with damping waveguide are reported to make a comparison. O4; Superconducting deflecting cavities can be used in synchrotron light source to generate subpicosecond X-ray pulses while the impedance of the lower order modes (LOM) and higher order modes (HOM) in the cavity should be kept below an accepted level to avoid beam instability. These modes can be damped by adding waveguide on beam pipe. Detailed simulation of Q in CST Microwave Studio is introduced and experiment results on an aluminum model cavity with damping waveguide are reported to make a comparison. Superconducting deflecting cavities can be used in synchrotron light source to generate subpico-second X-ray pulses while the impedance of the lower order modes (LOM) and higher order modes (HOM) in the cavity should be kept below an accepted level to avoid beam instability. These modes can be damped by adding waveguide on beam pipe. Here, detailed simulation of Q in CST Microwave Studio is introduced and experiment results on an aluminum model cavity with damping waveguide are reported to make a comparison. |
| Author | 施嘉儒 陈怀璧 唐传祥 郑曙昕 Derun Li |
| AuthorAffiliation | Department of Engineering Physics, Tsinghua University, Beijing 100084, China Lawrence Berkeley National Laboratory, CA 94720, USA |
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| BackLink | https://www.osti.gov/biblio/1407062$$D View this record in Osti.gov |
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| Cites_doi | 10.1016/S0168-9002(98)01372-2 |
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| Keywords | impedance calculation deflecting cavity HOM damping2007-5-18 lower order mode |
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| Notes | O441.1 deflecting cavity; lower order mode; impedance calculation; HOM damping lower order mode HOM damping impedance calculation 11-5641/O4 deflecting cavity National Natural Science Foundation of China (NSFC) AC02-05CH11231 USDOE Office of Science (SC) |
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| References | Li D (8) 2002 Shi J (10) 2006 1 Akai K (6) Robin D (2) 2005 Shi J (3) 2005 Kwiatkowski S (7) 2004 Browman M J (9) 1993 Hosoyama K (4) 1998 Chao A W (5) 1993 |
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| Snippet | Superconducting deflecting cavities can be used in synchrotron light source to generate subpicosecond X-ray pulses while the impedance of the lower order modes... O4; Superconducting deflecting cavities can be used in synchrotron light source to generate subpicosecond X-ray pulses while the impedance of the lower order... Superconducting deflecting cavities can be used in synchrotron light source to generate subpico-second X-ray pulses while the impedance of the lower order... |
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| SubjectTerms | CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY PARTICLE ACCELERATORS X射线脉冲 低序模 偏转模槽 高序模 |
| Title | LOM and HOM damping study in a superconducting deflecting cavity for ALS at LBNL |
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