Investigations on Absorber Materials at Cryogenic Temperatures

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In the framework of the 12 GeV upgrade project for the Continuous Electron Beam Accelerator Facility (CEBAF) improvements are being made to refurbish cryomodules housing Thomas Jefferson National Accelerator Facility’s (JLab) original 5-cell cavities. Recently we have started to look into a possible simplification of the existing Higher Order Mode (HOM) absorber design combined with the aim to find alternative material candidates. The absorbers are implemented in two HOM-waveguides immersed in the helium bath and operate at 2 K temperature. We have built a cryogenic setup to perform measurements on sample load materials to investigate their lossy characteristics and variations ... continued below

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Frank Marhauser, Thomas Elliott, Robert Rimmer May 1, 2009.

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In the framework of the 12 GeV upgrade project for the Continuous Electron Beam Accelerator Facility (CEBAF) improvements are being made to refurbish cryomodules housing Thomas Jefferson National Accelerator Facility’s (JLab) original 5-cell cavities. Recently we have started to look into a possible simplification of the existing Higher Order Mode (HOM) absorber design combined with the aim to find alternative material candidates. The absorbers are implemented in two HOM-waveguides immersed in the helium bath and operate at 2 K temperature. We have built a cryogenic setup to perform measurements on sample load materials to investigate their lossy characteristics and variations from room temperature down to 2 K. Initial results are presented in this paper.

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  • PAC09, 4-8 May 2009, Vancouver, BC, Canada

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  • Report No.: JLAB-ACC-09-977
  • Report No.: DOE/OR/23177-0734
  • Grant Number: AC05-06OR23177
  • Office of Scientific & Technical Information Report Number: 1021853
  • Archival Resource Key: ark:/67531/metadc833575

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Office of Scientific & Technical Information Technical Reports

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  • May 1, 2009

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  • May 19, 2016, 3:16 p.m.

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  • Aug. 3, 2016, 4:03 p.m.

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Frank Marhauser, Thomas Elliott, Robert Rimmer. Investigations on Absorber Materials at Cryogenic Temperatures, article, May 1, 2009; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc833575/: accessed December 12, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.