Aging in large CDF tracking chambers

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The experience of the Collider Detector at Fermilab (CDF) with aging in the large axial drift chamber responsible for tracking in the central region is presented. Premature aging in the Run 1 chamber was observed after only 0.02 C/cm. After cleaning much of the gas system and making modifications to reduce aerosols from the alcohol bubbler, the observed aging rate fell dramatically in test chambers. Considerable effort has been made to better understand the factors that affect aging since the replacement chamber for Run 2 will accumulate about 1.0 C/cm. Current test chambers using the full CDF gas system show ... continued below

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131 Kilobytes pages

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al., M. Binkley et March 19, 2001.

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Description

The experience of the Collider Detector at Fermilab (CDF) with aging in the large axial drift chamber responsible for tracking in the central region is presented. Premature aging in the Run 1 chamber was observed after only 0.02 C/cm. After cleaning much of the gas system and making modifications to reduce aerosols from the alcohol bubbler, the observed aging rate fell dramatically in test chambers. Considerable effort has been made to better understand the factors that affect aging since the replacement chamber for Run 2 will accumulate about 1.0 C/cm. Current test chambers using the full CDF gas system show aging rates of less than 5%/C/cm.

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131 Kilobytes pages

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  • International Workshop on Aging Phenomena in Gaseous Detectors, DESY, Hamburg (DE), 10/02/2001--10/05/2001

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  • Report No.: FERMILAB-Conf-02/041-E
  • Grant Number: AC02-76CH03000
  • Office of Scientific & Technical Information Report Number: 792720
  • Archival Resource Key: ark:/67531/metadc743092

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  • March 19, 2001

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  • Oct. 19, 2015, 7:39 p.m.

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  • April 1, 2016, 3:34 p.m.

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al., M. Binkley et. Aging in large CDF tracking chambers, article, March 19, 2001; Batavia, Illinois. (digital.library.unt.edu/ark:/67531/metadc743092/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.