Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)最新文献_第9页

High-brightness beam diagnostics for the APS linac APS直线机的高亮度光束诊断

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-20 DOI: 10.1109/PAC.1999.794397

A. Lumpkin, B. Yang, W. Berg, J. Lewellen, S. Milton

引用次数: 1

The operation of the BNL/ATF GUN-IV photocathode RF gun at the Advanced Photon Source BNL/ATF gun - iv型光电阴极射频枪在先进光子源上的运行

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-20 DOI: 10.1109/PAC.1999.794360

S. Biedron, G. Goeppner, J. Lewellen, S. Milton, A. Nassiri, G. Travish, X. Wang, N. Arnold, W. Berg, M. Babzien, C. Doose, R. Dortwegt, A. Grelick, J. Galayda, G. M. Markovich, S. Pasky, J. Power, B. Yang

引用次数: 11

Damping spurious harmonic resonances in the APS storage ring beam chamber APS存储环波束室中杂散谐波的阻尼

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-20 DOI: 10.1109/PAC.1999.792190

Y. Kang, G. Decker, J. Song

引用次数: 17

The Next Linear Collider damping ring complex 下一个线性碰撞器阻尼环复合体

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-19 DOI: 10.1109/PAC.1999.792326

J. Corlett, S. Marks, R. Rimmer, R. Schlueter, P. Bellomo, V. Bharadwaj, R. Cassel, P. Corredoura, P. Emma, R. Jobe, P. Krejcik, S. Mao, B. McKee, K. Millage, M. Munro, C. Pappas, T. Raubenheimer, S. Rokni, M. Ross, H. Schwarz, J. Sheppard, C. Spencer, R. Tighe, M. Woodley

{"title":"The Next Linear Collider damping ring complex","authors":"J. Corlett, S. Marks, R. Rimmer, R. Schlueter, P. Bellomo, V. Bharadwaj, R. Cassel, P. Corredoura, P. Emma, R. Jobe, P. Krejcik, S. Mao, B. McKee, K. Millage, M. Munro, C. Pappas, T. Raubenheimer, S. Rokni, M. Ross, H. Schwarz, J. Sheppard, C. Spencer, R. Tighe, M. Woodley","doi":"10.1109/PAC.1999.792326","DOIUrl":"https://doi.org/10.1109/PAC.1999.792326","url":null,"abstract":"We report progress on the design of the Next Linear Collider (NLC) damping rings complex (DRC). The purpose of the DRC is to provide 120 Hz, low emittance electron and positron bunch trains to the NLC linacs. It consists of two 1.98 GeV main damping rings, one positron pre-damping ring, two pairs of bunch length and energy compressor systems and interconnecting transport lines. The 2 main damping rings store up to 0.8 amp in 3 trains of 95 bunches each and have normalized extracted beam emittances /spl gamma//spl isin//sub x/=3 /spl mu/m-rad and /spl gamma//spl isin//sub y/=0.03 /spl mu/m-rad. The preliminary optical design, performance specifications and tolerances are given. Key subsystems include: 1) the 714 MHz RF system, 2) the 60 ns risetime injection/extraction pulsed kicker magnets, 3) the 44 m wiggler magnet system, 4) the arc and wiggler vacuum system, 5) the radiation management system, 6) the beam diagnostic instrumentation, 7) special systems used for downstream machine protection and 8) feedback-based stabilization systems.","PeriodicalId":20453,"journal":{"name":"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77029601","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

CVD-diamond-based position sensitive photoconductive detector for high-flux X-rays and gamma rays 用于高通量x射线和伽马射线的cvd -金刚石基位置敏感光导探测器

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-19 DOI: 10.1109/PAC.1999.794382

D. Shu, P. Job, J. Barraza, T. Cundiff, T. Kuzay

{"title":"CVD-diamond-based position sensitive photoconductive detector for high-flux X-rays and gamma rays","authors":"D. Shu, P. Job, J. Barraza, T. Cundiff, T. Kuzay","doi":"10.1109/PAC.1999.794382","DOIUrl":"https://doi.org/10.1109/PAC.1999.794382","url":null,"abstract":"A position-sensitive photoconductive detector (PSPCD) using insulating-type CVD diamond as its substrate material has been developed at the Advanced Photon Source (APS). Several different configurations, including a quadrant pattern for a X-ray-transmitting beam position monitor (TBPM) and 1-D and 2-D arrays for PSPCD beam profilers, have been developed. Tests on different PSPCD devices with high-heat-flux undulator white X-ray beam, as well as with gamma-ray beams from /sup 60/Co sources have been done at the APS and National Institute of Standards and Technology (NIST). It was proven that the insulating-type CVD diamond can be used to make a hard X-ray and gamma-ray position-sensitive detector that acts as a solid-state ion chamber. These detectors are based on the photoconductivity principle. A total of eleven of these TBPMs have been installed on the APS front ends for commissioning use. The linear array PSPCD beam profiler has been routinely used for direct measurements of the undulator white beam profile. More tests with hard x-rays and gamma rays are planned for the CVD-diamond 2-D imaging PSPCD. Potential applications include a high-dose-rate beam profiler for fourth-generation synchrotron radiation facilities, such as free-electron lasers.","PeriodicalId":20453,"journal":{"name":"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75689280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

The Next Linear Collider machine protection system 下一个直线对撞机保护系统

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-19 DOI: 10.1109/PAC.1999.795677

C. Adolphsen, J. Frisch, R. Jobe, D. McCormick, W. Nelson, T. Raubenheimer, S. Rokni, M. Ross, P. Tenenbaum, D. Walz

{"title":"The Next Linear Collider machine protection system","authors":"C. Adolphsen, J. Frisch, R. Jobe, D. McCormick, W. Nelson, T. Raubenheimer, S. Rokni, M. Ross, P. Tenenbaum, D. Walz","doi":"10.1109/PAC.1999.795677","DOIUrl":"https://doi.org/10.1109/PAC.1999.795677","url":null,"abstract":"The Next Linear Collider (NLC) electron and positron beams are capable of damaging the linac accelerating structure and beamline vacuum chambers during an individual aberrant accelerator pulse. Machine protection system (MPS) considerations, outlined in this paper for the 1 TeV NLC design, have an impact on the engineering and design of most machine components downstream of the damping ring injector complex. The MPS consists of two functional levels. The first level provides a benign, single bunch, low intensity, high emittance pilot beam that will be used for commissioning and also whenever the integrity or the settings of the downstream components are in doubt. This level also provides for the smooth transition back and forth between high power operation and the benign diagnostic pilot bunch operation. The pilot bunch parameters in the main linac are estimated on the basis of the expected stress in the accelerator structure copper. Beam tests have been done at the SLAC linac to examine the behavior of the copper at the damage stress threshold. Typical pilot beam parameters (compared with nominal) are: 10 times reduced intensity, 10 times increased horizontal emittance and 1000 times increased vertical emittance, resulting in a reduction in charge density of 10/sup 5/. The second level is the primary protection against a single aberrant pulse. Its goal is to reduce the possibility that a substantial transverse field changes the trajectory of the high power beam from one pulse to the next. All devices that could produce such a field are (1) monitored by a fast response network and where possible have (2) deliberately slowed response times. A 'maximum allowable interpulse difference' is evaluated for each such device as well as the beam trajectory monitors in each interpulse period.","PeriodicalId":20453,"journal":{"name":"Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"1999-04-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86851680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 8

Collective instabilities of the 50-50 GeV muon collider 50-50 GeV介子对撞机的集体不稳定性

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-19 DOI: 10.1109/PAC.1999.792185

K. Ng

引用次数: 0

A microwave beam waveguide undulator for a brilliant above 100 keV photon source 一种用于100kev以上明亮光子源的微波波束波导波动器

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-19 DOI: 10.1109/PAC.1999.795654

Y. Kang, J. Song, R. Kustom

引用次数: 1

Unified treatment of collective instabilities and nonlinear beam dynamics 集体不稳定性和非线性梁动力学的统一处理

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-19 DOI: 10.1109/PAC.1999.794282

K. Ng, S. Lee

引用次数: 0

Extending the range of a low energy SR-source to hard X-rays 将低能量sr源的范围扩展到硬x射线

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366) Pub Date : 1999-04-19 DOI: 10.1109/PAC.1999.792699

M. Abo-bakr, W. Anders, K. Burkmann, V. Durr, P. Kuske, R. Muller, K. Ott, M. Scheer, E. Weihreter, G. Wustefeld, H. Winick, H. Kaiser, J. Koupsidis, M. Marx, G. Voss

引用次数: 0