Run 16, eIPM Summary
Abstract
Three problems with the eIPMs were corrected during the 2015 summer shutdown. These involved ac coupling and 'negative profiles', detector 'dead zone' created by biasing, and gain control on ramp. With respect to Run 16, problems dealt with included gain depletion on horizontal MCP and rf pickup on profile signals; it was found that the MCP was severely damaged over part of the aperture. Various corrective measures were applied. Some results of these measured obtained during Run 16 are shown. At the end of Run 16 there was a three-day beam run to study polarized proton beams in the AGS. Attempts to minimize beam injection errors which increase emittance by using the eIPMs to measure the contribution of injection mismatch to the AGS output beam emittance are recounted. .
- Authors:
-
- Brookhaven National Lab. (BNL), Upton, NY (United States)
- Publication Date:
- Research Org.:
- Brookhaven National Lab. (BNL), Upton, NY (United States). Alternating Gradient Synchrotron
- Sponsoring Org.:
- USDOE Office of Science (SC), Nuclear Physics (NP)
- OSTI Identifier:
- 1324265
- Report Number(s):
- BNL-112516-2016-IR
R&D Project: KBCH139; KB0202011; TRN: US1700048
- DOE Contract Number:
- SC0012704
- Resource Type:
- Technical Report
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 43 PARTICLE ACCELERATORS; DIGITIZERS; SIGNALS; PULSE AMPLIFIERS; PROTON BEAMS; DESIGN; PULSES; BROOKHAVEN AGS; BEAM MONITORS; BEAM PROFILES; ERRORS; CORRECTIONS; GAIN; CONTROL; RF SYSTEMS; POLARIZED BEAMS; BEAM INJECTION; BEAM EMITTANCE; MICROCHANNEL ELECTRON MULTIPLIERS; Alternating Gradient Synchrotron
Citation Formats
Connolly, R., Dawson, C., Jao, S., Schoefer, V., and Tepikian, S. Run 16, eIPM Summary. United States: N. p., 2016.
Web. doi:10.2172/1324265.
Connolly, R., Dawson, C., Jao, S., Schoefer, V., & Tepikian, S. Run 16, eIPM Summary. United States. https://doi.org/10.2172/1324265
Connolly, R., Dawson, C., Jao, S., Schoefer, V., and Tepikian, S. 2016.
"Run 16, eIPM Summary". United States. https://doi.org/10.2172/1324265. https://www.osti.gov/servlets/purl/1324265.
@article{osti_1324265,
title = {Run 16, eIPM Summary},
author = {Connolly, R. and Dawson, C. and Jao, S. and Schoefer, V. and Tepikian, S.},
abstractNote = {Three problems with the eIPMs were corrected during the 2015 summer shutdown. These involved ac coupling and 'negative profiles', detector 'dead zone' created by biasing, and gain control on ramp. With respect to Run 16, problems dealt with included gain depletion on horizontal MCP and rf pickup on profile signals; it was found that the MCP was severely damaged over part of the aperture. Various corrective measures were applied. Some results of these measured obtained during Run 16 are shown. At the end of Run 16 there was a three-day beam run to study polarized proton beams in the AGS. Attempts to minimize beam injection errors which increase emittance by using the eIPMs to measure the contribution of injection mismatch to the AGS output beam emittance are recounted. .},
doi = {10.2172/1324265},
url = {https://www.osti.gov/biblio/1324265},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Aug 05 00:00:00 EDT 2016},
month = {Fri Aug 05 00:00:00 EDT 2016}
}