DocumentCode
344398
Title
Collective effects in SPEAR 3
Author
Limborg, C. ; Sebek, J.
Author_Institution
SSRL, SLAC, Stanford, CA, USA
Volume
4
fYear
1999
fDate
1999
Firstpage
2361
Abstract
SSRL is investigating an upgrade to run SPEAR with a small emittance (18 nm) and with a 200-500 mA current, significantly greater than the present 100 mA value of SPEAR 2. Using experimental measurements, numerical calculations of impedance, and results from tracking code simulations, an impedance model for SPEAR 3 is calculated. Beam quality and instability thresholds for these results are predicted. Based on these calculations, choices made for RF cavities, vacuum chamber material and cross-section, and BPM design are also discussed. The estimated beam lifetime for 500 mA is 22 hours
Keywords
accelerator RF systems; accelerator cavities; electron accelerators; particle beam diagnostics; storage rings; 22 h; RF cavities; SPEAR 3; beam instability; beam lifetime; beam position monitor; beam quality; current; emittance; impedance; tracking code; vacuum chamber material; Electron beams; Feedback; Impedance measurement; Life estimation; Lifetime estimation; Radio frequency; Storage rings; Threshold current; Vacuum arcs; Vacuum systems;
fLanguage
English
Publisher
ieee
Conference_Titel
Particle Accelerator Conference, 1999. Proceedings of the 1999
Conference_Location
New York, NY
Print_ISBN
0-7803-5573-3
Type
conf
DOI
10.1109/PAC.1999.792691
Filename
792691
Link To Document