A method for measuring dark current electron beams in an rf linac

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X-ray fluorescence from thin foils inserted into the NPS linac has been used to measure the integrated electron beam intensity when the accelerator is operating with dark current. The measured x-ray flux, the known inner shell ionization cross sections and radiative transition probabilities are used to obtain measurements of dark currents of the order of 10{sup -14} amperes. The same arrangement allows continuous, in-situ energy calibration of our SiLi detector in the electromagnetic noise environment of the linac. This technique was orginally developed to perform absolute production efficiency measurements of parametric x-ray generation in the 5-50 keV range.

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3 p.

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Maruyama, X. K.; Fasanello, T.; Rietdyk, H.; Piestrup, M. A.; Rule, D. W. & Fiorito, R. B. December 31, 1993.

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Description

X-ray fluorescence from thin foils inserted into the NPS linac has been used to measure the integrated electron beam intensity when the accelerator is operating with dark current. The measured x-ray flux, the known inner shell ionization cross sections and radiative transition probabilities are used to obtain measurements of dark currents of the order of 10{sup -14} amperes. The same arrangement allows continuous, in-situ energy calibration of our SiLi detector in the electromagnetic noise environment of the linac. This technique was orginally developed to perform absolute production efficiency measurements of parametric x-ray generation in the 5-50 keV range.

Physical Description

3 p.

Notes

OSTI as DE96011436

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  • PAC `93: international particle accelerator conference, Washington, DC (United States), 17-20 May 1993

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  • Other: DE96011436
  • Report No.: CONF-930511--526
  • Grant Number: FG03-91ER81099
  • Office of Scientific & Technical Information Report Number: 245607
  • Archival Resource Key: ark:/67531/metadc664152

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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.

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  • December 31, 1993

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • June 23, 2016, 12:30 p.m.

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Maruyama, X. K.; Fasanello, T.; Rietdyk, H.; Piestrup, M. A.; Rule, D. W. & Fiorito, R. B. A method for measuring dark current electron beams in an rf linac, article, December 31, 1993; United States. (digital.library.unt.edu/ark:/67531/metadc664152/: accessed December 16, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.