Using passive cavities for bunch shortening in CESR

Author

Belomestnykh, S. ; Kaplan, R. ; Reilly, J. ; Sikora, J. ; Veshcherevich, V.

Author_Institution

Lab. for Elementary-Particle Phys., Cornell Univ., Ithaca, NY, USA

Volume

2

fYear

2003

fDate

12-16 May 2003

Firstpage

1306

Abstract

Passive (beam-driven) superconducting cavities can be used in storage rings for bunch shortening when necessary high RF voltage can be achieved only by using multiple cavities, but the beam power consumption does not justify using all of them in the active mode, powered by klystrons. An example is the e⁺e^- collider CESR running with a beam energy below 2.5 GeV as a charm-tau factory (CESR-c). A short bunch length of about 10 mm is required for obtaining higher luminosity, while maximum beam power is only 160 kW. Theoretical and experimental studies are in progress at CESR to investigate the collider performance at low energy in preparation for its conversion to CESR-c. In the course of these studies we looked at possible impacts of using passive cavities on the accelerator performance. The results are presented.

Keywords

accelerator RF systems; accelerator cavities; colliding beam accelerators; electron accelerators; klystrons; particle beam bunching; particle beam dynamics; storage rings; superconducting cavity resonators; 160 kW; CESR; beam energy; beam power; bunch length; bunch shortening; charm-tau factory; high RF voltage; klystrons; luminosity; passive superconducting cavities; storage rings; Colliding beam devices; Energy consumption; Klystrons; Laboratories; Production facilities; Radio frequency; Resonance; Storage rings; Synchrotrons; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2003. PAC 2003. Proceedings of the

ISSN

1063-3928

Print_ISBN

0-7803-7738-9

Type

conf

DOI

10.1109/PAC.2003.1289687

Filename

1289687