Comparative Study of button BPM Trapped Mode Heating

Conference · Mon May 04 00:00:00 EDT 2009

OSTI ID:970510

Cameron, P; Singh, O

The combination of short bunches and high currents found in modern light sources and colliders can result in the deposition of tens of watts of power in BPM buttons. The resulting thermal distortion is potentially problematic for maintaining high precision beam position stability, and in the extreme case can result in mechanical damage. We present a simple algorithm that uses the input parameters of beam current, bunch length, button diameter, beampipe aperture, and fill pattern to calculate a relative figure-of-merit for button heating. Data for many of the world's light sources and colliders is compiled in a table. Using the algorithm, the table is sorted in order of the relative magnitude of button heating.

• Research Organization: Brookhaven National Lab. (BNL), Upton, NY (United States)
• Sponsoring Organization: Doe - Office Of Science
• DOE Contract Number: DE-AC02-98CH10886
• OSTI ID: 970510
• Report Number(s): BNL-90421-2009-CP; R&D Project: PO24; 39KC02000; TRN: US201002%%1251
• Resource Relation: Conference: PAC09; Vancouver, Canada; 20090504 through 20090508
• Country of Publication: United States
• Language: English

Related Subjects

99 GENERAL AND MISCELLANEOUS//MATHEMATICS, COMPUTING, AND INFORMATION SCIENCE
ACCURACY
ALGORITHMS
BEAM CURRENTS
BEAM POSITION
DEPOSITION
HEATING
LIGHT SOURCES
PERFORMANCE
STABILITY
Multiple Errors
Dynamic Aperture
Touschek Lifetime
Frequency Map Analysis
Tracking Code