Sequential bunch extractions in the Los Alamos PSR

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In the short-bunch, high-frequency operating mode of the future Proton Storage Ring (PSR) at LAMPF the extraction scheme will take out one bunch at a time. Because the ring only stores six bunches at most and because the bunching system is heavily beam loaded, each extraction can cause a substantial change in the average beam current and hence affects significantly the total bunching voltage as well as the phase synchronization between those remaining bunches and the voltage waveform. A time-dependent cavity-tuning scheme has been considered to retain the proper bunching voltage and phase relation. This work examines the stability of ... continued below

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Pages: 4

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Wang, T.F.; Cooper, R.K. & Smith, L. January 1, 1983.

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Description

In the short-bunch, high-frequency operating mode of the future Proton Storage Ring (PSR) at LAMPF the extraction scheme will take out one bunch at a time. Because the ring only stores six bunches at most and because the bunching system is heavily beam loaded, each extraction can cause a substantial change in the average beam current and hence affects significantly the total bunching voltage as well as the phase synchronization between those remaining bunches and the voltage waveform. A time-dependent cavity-tuning scheme has been considered to retain the proper bunching voltage and phase relation. This work examines the stability of the phase synchronization in the transient stage of extraction and cavity tuning. An equivalent circuit model is adopted, and the coupled nonlinear differential equations are solved numerically. We find that the relative phase will remain stable and that the voltage variation is tolerable under the PSR proposed operating conditions. A comparison between the numerical and analytical solutions confirms the numerical results.

Physical Description

Pages: 4

Notes

NTIS, PC A02/MF A01; 1.

Source

  • Particle accelerator conference, Santa Fe, NM, USA, 21 Mar 1983

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  • Other: DE83009975
  • Report No.: LA-UR-83-757
  • Report No.: CONF-830311-50
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 6306077
  • Archival Resource Key: ark:/67531/metadc1203531

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

Office of Scientific and Technical Information (OSTI) is the Department of Energy (DOE) office that collects, preserves, and disseminates DOE-sponsored research and development (R&D) results that are the outcomes of R&D projects or other funded activities at DOE labs and facilities nationwide and grantees at universities and other institutions.

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Creation Date

  • January 1, 1983

Added to The UNT Digital Library

  • July 5, 2018, 11:11 p.m.

Description Last Updated

  • Oct. 19, 2018, 9:35 p.m.

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Wang, T.F.; Cooper, R.K. & Smith, L. Sequential bunch extractions in the Los Alamos PSR, article, January 1, 1983; United States. (digital.library.unt.edu/ark:/67531/metadc1203531/: accessed December 14, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.