Bunch shape measurement of CW heavy-ion beam.

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An accurate bunch shape measurement is one of the most important tasks during the fine tuning of multicavity accelerators. A device for the measurement of bunch time structure of cw heavy-ion beams with time resolution {approx}20 picoseconds was developed, constructed and commissioned at ATLAS which is a 50 MV superconducting heavy-ion linac. The Bunch Shape Monitor (BSM) is based on the analysis of secondary electrons produced by a primary beam hitting a tungsten wire to which a potential of -10 kV is applied. In a BSM the longitudinal distribution of charge of the primary beam is coherently transformed into a ... continued below

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Vinogradov, N. Y.; Billquist, P.; Ostroumov, P. N.; Pardo, R. C.; Portillo, M.; Sharamentov, S. I. et al. August 22, 2002.

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An accurate bunch shape measurement is one of the most important tasks during the fine tuning of multicavity accelerators. A device for the measurement of bunch time structure of cw heavy-ion beams with time resolution {approx}20 picoseconds was developed, constructed and commissioned at ATLAS which is a 50 MV superconducting heavy-ion linac. The Bunch Shape Monitor (BSM) is based on the analysis of secondary electrons produced by a primary beam hitting a tungsten wire to which a potential of -10 kV is applied. In a BSM the longitudinal distribution of charge of the primary beam is coherently transformed into a spatial distribution of low energy secondary electrons through transverse rf modulation. The distribution of secondary electrons is detected by a chevron MCP coupled to a phosphor screen. The signal image on the screen is measured by use of a CCD camera connected to a PC. This BSM analyzes cw beams rather than pulsed beams studied by a previous device [1]. Design features of the BSM and the beam measurement results are reported.

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  • 21st International Linear Accelerator Conference (LINAC 2002), Gyeongju (KR), 08/19/2002--08/23/2002

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  • Report No.: ANL/PHY/CP-107622
  • Grant Number: W-31-109-ENG-38
  • Office of Scientific & Technical Information Report Number: 799844
  • Archival Resource Key: ark:/67531/metadc736648

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  • August 22, 2002

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  • Oct. 19, 2015, 7:39 p.m.

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  • March 11, 2016, 2:20 p.m.

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Vinogradov, N. Y.; Billquist, P.; Ostroumov, P. N.; Pardo, R. C.; Portillo, M.; Sharamentov, S. I. et al. Bunch shape measurement of CW heavy-ion beam., article, August 22, 2002; Illinois. (digital.library.unt.edu/ark:/67531/metadc736648/: accessed November 25, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.