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Title: Measurement of Electron Clouds in Large Accelerators by Microwave Dispersion

Journal Article · · Phys.Rev.Lett.100:094801, 2008

Clouds of low energy electrons in the vacuum beam pipes of accelerators of positively charged particle beams present a serious limitation for operation at high currents. Furthermore, it is difficult to probe their density over substantial lengths of the beam pipe. We have developed a novel technique to directly measure the electron cloud density via the phase shift induced in a TE wave transmitted over a section of the accelerator and used it to measure the average electron cloud density over a 50 m section in the positron ring of the PEP-II collider at the Stanford Linear Accelerator Center.

Research Organization:
SLAC National Accelerator Lab., Menlo Park, CA (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC02-76SF00515
OSTI ID:
925776
Report Number(s):
SLAC-PUB-13181; PRLTAO; TRN: US0803086
Journal Information:
Phys.Rev.Lett.100:094801, 2008, Vol. 100; ISSN 0031-9007
Country of Publication:
United States
Language:
English