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Title: High-Power Multimode X-Band RF Pulse Compression System for Future Linear Colliders

Abstract

We present a multimode X-band rf pulse compression system suitable for a TeV-scale electron-positron linear collider such as the Next Linear Collider (NLC). The NLC main linac operating frequency is 11.424 GHz. A single NLC rf unit is required to produce 400 ns pulses with 475 MW of peak power. Each rf unit should power approximately 5 m of accelerator structures. The rf unit design consists of two 75 MW klystrons and a dual-moded resonant-delay-line pulse compression system that produces a flat output pulse. The pulse compression system components are all overmoded, and most components are designed to operate with two modes. This approach allows high-power-handling capability while maintaining a compact, inexpensive system. We detail the design of this system and present experimental cold test results. We describe the design and performance of various components. The high-power testing of the system is verified using four 50 MW solenoid-focused klystrons run off a common 400 kV solid-state modulator. The system has produced 400 ns rf pulses of greater than 500 MW. We present the layout of our system, which includes a dual-moded transmission waveguide system and a dual-moded resonant line (SLED-II) pulse compression system. We also present data on the processingmore » and operation of this system, which has set high-power records in coherent and phase controlled pulsed rf.« less

Authors:
; ; ; ; ; ; ; ; ; ; ;
Publication Date:
Research Org.:
Stanford Linear Accelerator Center (SLAC)
Sponsoring Org.:
USDOE
OSTI Identifier:
878835
Report Number(s):
SLAC-PUB-11402
Journal ID: ISSN 1098-4402; TRN: US0602615
DOE Contract Number:  
AC02-76SF00515
Resource Type:
Journal Article
Journal Name:
Physical Review Special Topics. Accelerators and Beams
Additional Journal Information:
Journal Volume: 8; Journal ID: ISSN 1098-4402
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; ACCELERATORS; COMPRESSION; DESIGN; KLYSTRONS; LINEAR ACCELERATORS; LINEAR COLLIDERS; PEAK LOAD; PERFORMANCE; PROCESSING; TESTING; WAVEGUIDES; Accelerators,ACCPHY

Citation Formats

Tantawi, S.G., Nantista, C.D., Dolgashev, V.A., Pearson, C., Nelson, J., Jobe, K., Chan, J., Fant, K., Frisch, J., /SLAC, Atkinson, D., and /LLNL, Livermore. High-Power Multimode X-Band RF Pulse Compression System for Future Linear Colliders. United States: N. p., 2005. Web. doi:10.1103/PhysRevSTAB.8.042002.
Tantawi, S.G., Nantista, C.D., Dolgashev, V.A., Pearson, C., Nelson, J., Jobe, K., Chan, J., Fant, K., Frisch, J., /SLAC, Atkinson, D., & /LLNL, Livermore. High-Power Multimode X-Band RF Pulse Compression System for Future Linear Colliders. United States. doi:10.1103/PhysRevSTAB.8.042002.
Tantawi, S.G., Nantista, C.D., Dolgashev, V.A., Pearson, C., Nelson, J., Jobe, K., Chan, J., Fant, K., Frisch, J., /SLAC, Atkinson, D., and /LLNL, Livermore. Wed . "High-Power Multimode X-Band RF Pulse Compression System for Future Linear Colliders". United States. doi:10.1103/PhysRevSTAB.8.042002. https://www.osti.gov/servlets/purl/878835.
@article{osti_878835,
title = {High-Power Multimode X-Band RF Pulse Compression System for Future Linear Colliders},
author = {Tantawi, S.G. and Nantista, C.D. and Dolgashev, V.A. and Pearson, C. and Nelson, J. and Jobe, K. and Chan, J. and Fant, K. and Frisch, J. and /SLAC and Atkinson, D. and /LLNL, Livermore},
abstractNote = {We present a multimode X-band rf pulse compression system suitable for a TeV-scale electron-positron linear collider such as the Next Linear Collider (NLC). The NLC main linac operating frequency is 11.424 GHz. A single NLC rf unit is required to produce 400 ns pulses with 475 MW of peak power. Each rf unit should power approximately 5 m of accelerator structures. The rf unit design consists of two 75 MW klystrons and a dual-moded resonant-delay-line pulse compression system that produces a flat output pulse. The pulse compression system components are all overmoded, and most components are designed to operate with two modes. This approach allows high-power-handling capability while maintaining a compact, inexpensive system. We detail the design of this system and present experimental cold test results. We describe the design and performance of various components. The high-power testing of the system is verified using four 50 MW solenoid-focused klystrons run off a common 400 kV solid-state modulator. The system has produced 400 ns rf pulses of greater than 500 MW. We present the layout of our system, which includes a dual-moded transmission waveguide system and a dual-moded resonant line (SLED-II) pulse compression system. We also present data on the processing and operation of this system, which has set high-power records in coherent and phase controlled pulsed rf.},
doi = {10.1103/PhysRevSTAB.8.042002},
journal = {Physical Review Special Topics. Accelerators and Beams},
issn = {1098-4402},
number = ,
volume = 8,
place = {United States},
year = {2005},
month = {8}
}