The Two Stage Crystal Collimator for Rhic.

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The use of a two stage crystal collimation system in the RHIC yellow ring is examined. The system includes a copper beam scraper and a bent silicon crystal. While scrapers were installed in both of the RHIC rings before the year 2000 run, the crystal is installed for the 2001 run in one ring only, forming a two stage collimation system there. We present simulations of the expected channeling through the bent silicon crystal for both protons and gold ions with various beam parameters. This gives a picture of the particle losses around the ring, and the expected channeling efficiency. … continued below

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3 pages

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Fliller, R. P., III; Drees, A.; Gassner, D.; Hammons, L.; McIntyre, G.; Trbojevic, D. et al. June 18, 2001.

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Description

The use of a two stage crystal collimation system in the RHIC yellow ring is examined. The system includes a copper beam scraper and a bent silicon crystal. While scrapers were installed in both of the RHIC rings before the year 2000 run, the crystal is installed for the 2001 run in one ring only, forming a two stage collimation system there. We present simulations of the expected channeling through the bent silicon crystal for both protons and gold ions with various beam parameters. This gives a picture of the particle losses around the ring, and the expected channeling efficiency. These results are then used to optimize the beam parameters in the area of the crystal to obtain maximum channeling efficiency, minimize out-scattering in the secondary collimator, and reduce beam halo.

Physical Description

3 pages

Notes

INIS; OSTI as DE00785045

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  • PARTICLE ACCELERATOR CONFERENCE 2001, CHICAGO, IL (US), 06/18/2001--06/22/2001

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  • Report No.: BNL--67967
  • Report No.: KA0201
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 785045
  • Archival Resource Key: ark:/67531/metadc720561

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Office of Scientific & Technical Information Technical Reports

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  • June 18, 2001

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • Jan. 20, 2024, 3:37 p.m.

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Fliller, R. P., III; Drees, A.; Gassner, D.; Hammons, L.; McIntyre, G.; Trbojevic, D. et al. The Two Stage Crystal Collimator for Rhic., article, June 18, 2001; Upton, New York. (https://digital.library.unt.edu/ark:/67531/metadc720561/: accessed March 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.

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