Photoemission Phenomena on CEBAF RF Windows at Cryogenic Temperatures

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This paper reports on the photoemission observed during the tests on a single-cell 1500 MHz niobium cavity with a polycrystalline alumina rf interface window operated at 2K. The light emission from the window at 2K was detected using a multi-channel fiber optics/PMT system and recorded with a 100 Ms/sec acquisition system. The spectral composition of two types of discharges has been measured. The results indicate that both broadband and narrow-band emissions are present, depending on the discharge type.

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253 Kilobytes pages

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Powers, T.; Kneisel, P. & Vaidya, M. May 1, 1993.

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Description

This paper reports on the photoemission observed during the tests on a single-cell 1500 MHz niobium cavity with a polycrystalline alumina rf interface window operated at 2K. The light emission from the window at 2K was detected using a multi-channel fiber optics/PMT system and recorded with a 100 Ms/sec acquisition system. The spectral composition of two types of discharges has been measured. The results indicate that both broadband and narrow-band emissions are present, depending on the discharge type.

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253 Kilobytes pages

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  • PAC 1993, Washington, DC (US), 05/17/1993--05/20/1993

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  • Report No.: CEBAF-PR-93-045
  • Report No.: DOE/ER/40150-1929
  • Grant Number: AC05-84ER40150
  • Office of Scientific & Technical Information Report Number: 787858
  • Archival Resource Key: ark:/67531/metadc715650

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  • May 1, 1993

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  • Sept. 29, 2015, 5:31 a.m.

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  • Feb. 5, 2016, 8:25 p.m.

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Powers, T.; Kneisel, P. & Vaidya, M. Photoemission Phenomena on CEBAF RF Windows at Cryogenic Temperatures, article, May 1, 1993; Newport News, Virginia. (digital.library.unt.edu/ark:/67531/metadc715650/: accessed September 23, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.