Measurement of the hybrid photodiode response - Fiber optic window

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Description

The hybrid photodiode (HPD[1]) will be used for the CMS HCAL readout [2]. A fiber-optic front window is used to reduce optical cross-talk between the pixels of the multi-pixel HPD�s. A mismatch of numerical aperture between optical fibers carrying light to the HPD window and the fibers composing the fiber-optic front window of the HPD could lead to light loss. The light loss would appear as a reduced effective quantum efficiency of the device. The goal of this set of measurements was to see if there was in fact a reduction in the effective quantum efficiency of the HPD�s.

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626 Kilobytes

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Ronzhin, A.; Green, D.; Freeman, J. & Barbaro, P. de January 1, 1999.

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Description

The hybrid photodiode (HPD[1]) will be used for the CMS HCAL readout [2]. A fiber-optic front window is used to reduce optical cross-talk between the pixels of the multi-pixel HPD�s. A mismatch of numerical aperture between optical fibers carrying light to the HPD window and the fibers composing the fiber-optic front window of the HPD could lead to light loss. The light loss would appear as a reduced effective quantum efficiency of the device. The goal of this set of measurements was to see if there was in fact a reduction in the effective quantum efficiency of the HPD�s.

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626 Kilobytes

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  • Other: DE00002878
  • Report No.: FERMILAB-TM-2064
  • Grant Number: NONE
  • DOI: 10.2172/2878 | External Link
  • Office of Scientific & Technical Information Report Number: 2878
  • Archival Resource Key: ark:/67531/metadc664309

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  • January 1, 1999

Added to The UNT Digital Library

  • June 29, 2015, 9:42 p.m.

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  • April 18, 2016, 3:24 p.m.

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Ronzhin, A.; Green, D.; Freeman, J. & Barbaro, P. de. Measurement of the hybrid photodiode response - Fiber optic window, report, January 1, 1999; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc664309/: accessed September 22, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.