Transverse profile of the electron beam for the RHIC electron lenses

Journal Article · Fri Jul 10 04:00:00 UTC 2015 · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment

DOI: https://doi.org/10.1016/j.nima.2015.07.001 · OSTI ID:1225437

Gu, X. ^[1]; Altinbas, Z. ^[1]; Costanzo, M. ^[1]; Fischer, W. ^[1]; Gassner, D. M. ^[1]; Hock, J. ^[1]; Luo, Y. ^[1]; Miller, T. ^[1]; Tan, Y. ^[1]; Thieberger, P. ^[1]; Montag, C. ^[1]; Pikin, A. I. ^[1]

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1. Brookhaven National Laboratory (BNL), Upton, NY (United States)

To compensate for the beam-beam effects from the proton-proton interactions at the two interaction points IP6 and IP8 in the Relativistic Heavy Ion Collider (RHIC), we are constructing two electron lenses (e-lenses) that we plan to install in the interaction region IR10. Before installing them, the electron gun, collector, instrumentation were tested and the electron beam properties were qualified on an electron lens test bench. We will present the test results and discuss our measurement of the electron beam current and of the electron gun perveance. We achieved a maximum current of 1 A with 5 kV energy for both the pulsed- and the DC-beam (which is a long turn-by-turn pulse beam). We measured beam transverse profiles with an Yttrium Aluminum Garnet (YAG) screen and pinhole detector, and compared those to simulated beam profiles. Measurements of the pulsed electron beam stability were obtained by measuring the modulator voltage.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States)
• Sponsoring Organization: USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
• OSTI ID: 1225437
• Report Number(s): BNL--108519-2015-JA; KB0202011
• Journal Information: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 798; ISSN 0168-9002
• Publisher: ElsevierCopyright Statement
• Country of Publication: United States
• Language: English