Experimental reduction of beam-breakup instability growth by external cavity coupling in long-pulse electron-beam transport
Journal Article
·
· Physical Review Letters; (United States)
- Intense Energy Beam Interaction Laboratory, Nuclear Engineering Department, University of Michigan, Ann Arbor, Michigan 48109-2104 (United States)
Experiments have demonstrated the reduction of the beam-breakup (BBU) instability growth rate by coupling the main cavities, through which an electron beam passes, to identical dummy cavities. When seven of the ten main cavities are coupled, an average reduction of about 6 dB in BBU microwave growth, from 36 to 30 dB, is observed. This reduction is consistent with a simple mode coupling theory. The electron beam parameters are 750 kV, 210 A, 0.5 [mu]s, with solenoidal focusing of 3.4 kG.
- OSTI ID:
- 6970445
- Journal Information:
- Physical Review Letters; (United States), Vol. 69:16; ISSN 0031-9007
- Country of Publication:
- United States
- Language:
- English
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INSTABILITY GROWTH RATES
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BEAM CURRENTS
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COUPLING
EXPERIMENTAL DATA
INHIBITION
MAGNETIC FIELDS
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NUMERICAL DATA
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