MICRO PIN ARRAY DETECTOR (MIPA): FIRST TEST RESULTS.

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Description

A novel gas proportional detector, consisting of an array of pins immersed into a cathode made out of closely packed hexagonals has been developed. The resulting geometry of the detector is 3 dimensional. Electron multiplication is limited to a region in close proximity to the tip of each pin, where the electric field decreases with distance from the pin at a rate faster than 1/r, the rate that exists in a traditional wire chamber. The multiplication region is limited to a small part of the detector volume leading to stability of operation up to high charge gas gains. The amplification ... continued below

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3 pages

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REHAK,P.; SMITH,G.C.; WARREN,J.B. & YU,B. June 28, 1999.

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Description

A novel gas proportional detector, consisting of an array of pins immersed into a cathode made out of closely packed hexagonals has been developed. The resulting geometry of the detector is 3 dimensional. Electron multiplication is limited to a region in close proximity to the tip of each pin, where the electric field decreases with distance from the pin at a rate faster than 1/r, the rate that exists in a traditional wire chamber. The multiplication region is limited to a small part of the detector volume leading to stability of operation up to high charge gas gains. The amplification region is located far enough from any dielectric surface that the gas gain is insensitive to the charge state of the surface, a significant benefit compared with many other micro-pattern detectors. The microscopic dimensions of the individual pins of the array result in signals whose total duration is about a microsecond. Two identical, but opposite polarity signals are detected, one on the pin and one on the cathode. Both signals can be used by two independent, charge division, read-out systems to obtain unambiguous x-y position information of the primary ionization.

Physical Description

3 pages

Notes

OSTI as DE00788842

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  • MICRO-PATTERN GAS DETECTORS WORKSHOP, ORSAY (FR), 06/28/1999--06/30/1999

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  • Report No.: BNL--66497
  • Report No.: KA0404
  • Grant Number: AC02-98CH10886
  • Office of Scientific & Technical Information Report Number: 788842
  • Archival Resource Key: ark:/67531/metadc717066

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Office of Scientific & Technical Information Technical Reports

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  • June 28, 1999

Added to The UNT Digital Library

  • Sept. 29, 2015, 5:31 a.m.

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  • Nov. 9, 2015, 1:11 p.m.

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REHAK,P.; SMITH,G.C.; WARREN,J.B. & YU,B. MICRO PIN ARRAY DETECTOR (MIPA): FIRST TEST RESULTS., article, June 28, 1999; Upton, New York. (digital.library.unt.edu/ark:/67531/metadc717066/: accessed June 18, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.