Studies of the effects of electron cloud formation on beam dynamics at CesrTA
The Cornell Electron Storage Ring Test Accelerator (CesrTA) has commenced operation as a linear collider damping ring test bed following its conversion from an e{sup +}e{sup -}-collider in 2008. A core component of the research program is the measurement of effects of synchrotron-radiation-induced electron cloud formation on beam dynamics. We have studied the interaction of the beam with the cloud with measurements of coherent tune shifts and emittance growth in various bunch train configurations, bunch currents, beam energies, and bunch lengths, for both e{sup +} and e{sup -} beams. This paper compares a subset of these measurements to modeling results from the two-dimensional cloud simulation packages ECLOUD and POSINST. These codes each model most of the tune shift measurements with remarkable accuracy, while some comparisons merit further investigation.
- Research Organization:
- Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
- Sponsoring Organization:
- Accelerator& Fusion Research Division
- DOE Contract Number:
- DE-AC02-05CH11231
- OSTI ID:
- 973685
- Report Number(s):
- LBNL-2642E; TRN: US1002004
- Resource Relation:
- Conference: PAC 09
- Country of Publication:
- United States
- Language:
- English
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