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Title: Techniques for beam impedance measurements above cutoff

Conference ·
OSTI ID:6526953

Methods for measuring beam impedance above cutoff have been very limited. For design work on the ALS we have developed two techniques that yield data in the frequency domain with high sensitivity. The first is an extension of the wire method; the second utilizes traveling TM waves to simulate the beam's fields at the wall, and thus avoids the mechanical difficulties of mounting the wire. It is also more sensitive than the other method but the interpretation is complicated by the presence of higher order modes. With either method we were able to detect resonant peaks smaller than 1 Ohm at 10 GHz.

Research Organization:
Lawrence Berkeley Lab., CA (USA)
Sponsoring Organization:
DOE/ER
DOE Contract Number:
AC03-76SF00098
OSTI ID:
6526953
Report Number(s):
LBL-28190; CONF-900603-54; ON: DE91004309; TRN: 90-037559
Resource Relation:
Conference: 2. European particle accelerator conference, Nice (France), 11-16 Jun 1990
Country of Publication:
United States
Language:
English