Progress report on new rf breakdown studies in an S-band structure at SLAC

Conference · Sun Feb 01 04:00:00 EST 1987

OSTI ID:6161270

Wang, J W; Loew, G A

This paper gives a progress report on RF breakdown studies carried out at SLAC on an S-band standing-wave disk-loaded accelerator structure. The structure is the same as described at two earlier conferences but it has been equipped with eight new radial probes and one output port to observe the emission of light, which has not yet been used. The earlier breakdown limit of 144 MV/m equivalent traveling-wave accelerating gradient and 312 MV/m peak surface field has been reached again and possibly exceeded slightly even though the disk iris edges are severely pitted from earlier tests. Using the new probes it has become possible to monitor field emission as a function of azimuthal direction as well as to record the signals generated at the instant of breakdown. Results are given together with some information on the condition of the structure, chemical cleaning and RF processing. The paper ends with the presentation of some speculations and future plans.

• Research Organization: Stanford Linear Accelerator Center, Menlo Park, CA (USA)
• DOE Contract Number: AC03-76SF00515
• OSTI ID: 6161270
• Report Number(s): SLAC-PUB-4247; CONF-870302-199; ON: DE87010316
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430300* -- Particle Accelerators-- Auxiliaries & Components
BREAKDOWN
DATA
ELECTRIC FIELDS
EXPERIMENTAL DATA
INFORMATION
INSPECTION
NATIONAL ORGANIZATIONS
NUMERICAL DATA
RF SYSTEMS
STANFORD LINEAR ACCELERATOR CENTER
US DOE
US ERDA
US ORGANIZATIONS