Evidence for millimeter-wave coherent emission from the NSLS VUV ring

Conference · Mon Jul 19 00:00:00 EDT 1999

OSTI ID:750674

Carr, G L

Coherent synchrotron radiation from the NSLS VUV ring has been detected and partially characterized. The observations have been performed at the new far infrared beamline U12IR. The coherent radiation is peaked near a wavelength of 7mm and occurs in short duration bursts. The bursts occur only when the electron beam current (I) exceeds a threshold value (I{sub th}), which itself varies with ring operating conditions. Beyond threshold, the average intensity of the emission is found to increase as (I-I{sub th}). The coherent emission implies micro-bunching of the electron beam due to a longitudinal instability.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Energy Research (ER) (US)
• DOE Contract Number: AC02-98CH10886
• OSTI ID: 750674
• Report Number(s): BNL-66993; KC0204011; R&D Project: LS1; TRN: US0000693
• Resource Relation: Conference: Accelerator Based Sources of Infrared and Spectroscopic Applications II, Denver, CO (US), 07/19/1999--07/20/1999; Other Information: PBD: 19 Jul 1999
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
NSLS
STORAGE RINGS
SYNCHROTRON RADIATION
COHERENT RADIATION
ACCELERATOR FACILITIES
BEAM CURRENTS
BEAM BUNCHING