Optical diagnostics on ETA-II for x-ray spot size

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Improvements have been made in the performance of the ETA-II accelerator that allow a nominal 2 kA, 6 MeV beam to be focused to a spot size less that 1 mm in diameter. The improvements include reducing the energy sweep to less than +/- 0.5 & over 40 ns of the pulse using a real time energy diagnostic and improving the magnetic tune of the accelerator to reduce the emittance to 8 cm-mrad. Finally, an automated tuning system (MAESTRO) was run to minimize the time dependent centroid motion (corkscrew) by adjusting the steering dipoles over the focusing solenoids. The corkscrew ... continued below

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214 Kilobytes

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Richardson, R A March 22, 1999.

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Description

Improvements have been made in the performance of the ETA-II accelerator that allow a nominal 2 kA, 6 MeV beam to be focused to a spot size less that 1 mm in diameter. The improvements include reducing the energy sweep to less than +/- 0.5 & over 40 ns of the pulse using a real time energy diagnostic and improving the magnetic tune of the accelerator to reduce the emittance to 8 cm-mrad. Finally, an automated tuning system (MAESTRO) was run to minimize the time dependent centroid motion (corkscrew) by adjusting the steering dipoles over the focusing solenoids. The corkscrew motion was reduced to less than +/- 0.5 mm at the output of the accelerator.

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214 Kilobytes

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  • 1999 Particle Accelerator Conference, New York, New York, March 29 - April 2, 1999

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  • Other: DE00007393
  • Report No.: UCRL-JC-132301
  • Grant Number: W-7405-Eng-48
  • Office of Scientific & Technical Information Report Number: 7393
  • Archival Resource Key: ark:/67531/metadc704811

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  • March 22, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • May 6, 2016, 11:21 p.m.

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Richardson, R A. Optical diagnostics on ETA-II for x-ray spot size, article, March 22, 1999; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc704811/: accessed September 21, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.