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Accession Number DE2012-1045810
Title 4.2 GS/sec. Synchronized Vertical Excitation System for SPS Studies: Steps Toward Wideband Feedback.
Publication Date 2012
Media Count 3p
Personal Author C. Rivetta I. Rivetta J. Olsen J. D. Fox O. Turgut S. Uemura
Abstract A 4.2 GS/sec. beam excitation system with accelerator synchronization and power stages is described. The system is capable of playing unique samples (32 samples/bunch) for 15,000 turns on selected bunch(es) in the SPS in syn- chronism with the injection and acceleration cycle. The purpose of the system is to excite internal modes of single- bunch vertical motion, and study the bunch dynamics in the presence of developing Electron cloud or TMCI effects. The system includes a synchronized master oscillator, SPS timing functions, an FPGA based arbitrary waveform gen- erator, 4.2 GS/sec. D/A system and four 80W 20 -1000 MHz amplifiers driving a tapered stripline pickup/kicker. A software GUI allows specification of various modulation signals, selection of bunches and turns to excite, while a remote control interface allows simple control/monitoring of the RF power stages located in the tunnel. The success- ful use of this system for SPS MD measurements in 2011 is a vital proof-of-principle for wideband feedback using similar functions to correct the beam motion.
Keywords Acceleration
Accelerators
Amplifiers
Clouds
Electrons
Excitation systems
Feedback
Modulation
Remote control
Specifications
Synchronization
Wave forms

 
Source Agency Technical Information Center Oak Ridge Tennessee
NTIS Subject Category 46 - Physics
Corporate Author Stanford Linear Accelerator Center, CA.
Document Type Technical report
Title Note N/A
NTIS Issue Number 1226
Contract Number DE-AC02-76SF00515

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