Electronics cooling of Phenix multiplicity and vertex detector

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Description

The Multiplicity and Vertex Detector (MVD) uses silicon strip sensors arranged in two concentric barrels around the beam pipe of the PHENIX detector that will be installed at Brookhaven National Laboratory. Each silicon sensor is connected by a flexible kapton cable to its own front-end electronics printed circuit board that is a multi-chip module or MCM. The MCMs are the main heat source in the system. To maintain the MVD at optimized operational status, the maximum temperature of the multi-chip modules must be below 40 C. Using COSMOS/M HSTAR for the Heat Transfer analysis, a finite element model of a ... continued below

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16 p.

Creation Information

Chen, Z. & Gregory, W.S. August 1, 1996.

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Description

The Multiplicity and Vertex Detector (MVD) uses silicon strip sensors arranged in two concentric barrels around the beam pipe of the PHENIX detector that will be installed at Brookhaven National Laboratory. Each silicon sensor is connected by a flexible kapton cable to its own front-end electronics printed circuit board that is a multi-chip module or MCM. The MCMs are the main heat source in the system. To maintain the MVD at optimized operational status, the maximum temperature of the multi-chip modules must be below 40 C. Using COSMOS/M HSTAR for the Heat Transfer analysis, a finite element model of a typical MCM plate was created to simulate a 9m/s airflow and 9m/s mixed flow composed of 50% helium and 50% air respectively, with convective heat transfer on both sides of the plate. The results using a mixed flow of helium and air show that the average maximum temperature reached by the MCMs is 37.5 C. The maximum temperature which is represented by the hot spots on the MCM is 39.43 C for the helium and air mixture which meets the design temperature requirement 40 C. To maintain the Multiplicity and Vertex Detector at optimized operational status, the configuration of the plenum chamber, the power dissipated by the silicon chips, the fluid flow velocity and comparison on the MCM design parameters will be discussed.

Physical Description

16 p.

Notes

INIS; OSTI as DE98001343

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  • 2. biennial Tri-Laboratory engineering conference on modeling and simulation, Santa Fe, NM (United States), 12-14 Nov 1997

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  • Other: DE98001343
  • Report No.: LA-UR--97-3195
  • Report No.: CONF-971187--
  • Grant Number: W-7405-ENG-36
  • DOI: 10.2172/563286 | External Link
  • Office of Scientific & Technical Information Report Number: 563286
  • Archival Resource Key: ark:/67531/metadc694554

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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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  • August 1, 1996

Added to The UNT Digital Library

  • Aug. 14, 2015, 8:43 a.m.

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  • May 20, 2016, 3:17 p.m.

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Chen, Z. & Gregory, W.S. Electronics cooling of Phenix multiplicity and vertex detector, report, August 1, 1996; New Mexico. (digital.library.unt.edu/ark:/67531/metadc694554/: accessed April 23, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.