Automated startup of the CEBAF 45 MeV injector

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Description

In order to improve the speed and reproducibility of restoring the beam in the Continuous Electron Beam Accelerator Facility (CEBAF) 45 MeV injector after a full or partial shutdown of the accelerator, a program has been written using the Tcl/Tk scripting language to automate most of the required steps. The procedure is separated into four main parts. The first part performs preliminary checks that verify that the hardware is set correctly and then turns on the main interlocked systems including high power magnets and RF. The second step turns on the gun high voltage. The final steps turn on the ... continued below

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426 KILOBYTES pages

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Kehne, D.; Letta, P.; Dunham, B. & Kazimi, R. December 1, 1997.

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Description

In order to improve the speed and reproducibility of restoring the beam in the Continuous Electron Beam Accelerator Facility (CEBAF) 45 MeV injector after a full or partial shutdown of the accelerator, a program has been written using the Tcl/Tk scripting language to automate most of the required steps. The procedure is separated into four main parts. The first part performs preliminary checks that verify that the hardware is set correctly and then turns on the main interlocked systems including high power magnets and RF. The second step turns on the gun high voltage. The final steps turn on the beam and verify that the beam quality is satisfactory by measuring the transmission, orbit, transverse beam size, and bunch length. Minor corrections for phasing are also performed in the program. In order to identify inefficiencies in the startup, each is timed and parameter changes are logged so that system drifts can be tracked. This paper describes the software implementation, the logic to achieve a successful startup, and efficiency results.

Physical Description

426 KILOBYTES pages

Notes

INIS; OSTI as DE98001432

Source

  • 17. IEEE particle accelerator conference, Vancouver, British Columbia (CA), 05/12/1997--05/16/1997; Other Information: Supercedes report DE98001432; PBD: 1 Dec 1997

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  • Other: DE98001432
  • Report No.: DOE/ER/40150--1136
  • Report No.: JLAB-ACO--97-03
  • Report No.: CONF-970503--
  • Report No.: ON:DE98001432
  • Report No.: BR:KB0101000
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 555566
  • Archival Resource Key: ark:/67531/metadc692059

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  • December 1, 1997

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  • Aug. 14, 2015, 8:43 a.m.

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  • Feb. 5, 2016, 7:51 p.m.

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Kehne, D.; Letta, P.; Dunham, B. & Kazimi, R. Automated startup of the CEBAF 45 MeV injector, article, December 1, 1997; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc692059/: accessed August 24, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.