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Studies with cathode drift chambers for the GlueX experiment at Jefferson Lab

Journal Article · · Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
 [1];  [1];  [2];  [1];  [1];  [3];  [1]
  1. Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
  2. National Research Nuclear Univ. MEPhi, Moscow (Russia)
  3. Northwestern Univ., Evanston, IL (United States)
+ Show Author Affiliations
A drift chamber system consisting of 24 1 m-diameter chambers with both cathode and wire readout (total of 12,672 channels) is operational in Hall D at Jefferson Lab (Virginia). Two cathode strip planes and one wire plane in each chamber register the same avalanche allowing the study of avalanche development, charge induction process, and strip resolution. We demonstrate a method for reconstructing the two-dimensional distribution of the avalanche “center-of-gravity” position around the wire from an 55Fe source with resolutions down to 30 μm. We estimate the azimuthal extent of the avalanche around the wire as a function of the total charge for an Ar/CO2 gas mixture. By means of cluster counting using a modified 3 cm-gap chamber, we observe significant space charge effects within the same track, resulting in an extent of the avalanche along the wire.
Research Organization:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Nuclear Physics (NP); USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
Grant/Contract Number:
AC05-06OR23177
OSTI ID:
1343106
Alternate ID(s):
OSTI ID: 1556153
Report Number(s):
DOE/OR/--23177-3782; JLAB-PHY--16-2234; PII: S0168900216302893
Journal Information:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment, Journal Name: Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment Journal Issue: C Vol. 845; ISSN 0168-9002
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

References (6)

Spatial distribution of the avalanche in proportional counters journal May 1978
Progress in high-accuracy proportional chambers journal February 1978
Cathode charge distributions in multiwire chambers
  • Gordon, J. S.; Mathieson, E.
  • Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, Vol. 227, Issue 2 https://doi.org/10.1016/0168-9002(84)90132-3
journal November 1984
Cathode charge distributions in multiwire chambers: 4. Empirical formula for small anode-cathode separation journal July 1988
Azimuthal Spread of the Avalanche in Proportional Chambers journal January 1979
Use of cluster counting technique for particle identification in a drift chamber with the cathode strip readout journal July 2015

Cited By (2)

Beam asymmetry Σ for the photoproduction of η and η ′ mesons at E γ = 8.8 GeV journal November 2019
First Measurement of Near-Threshold J / ψ Exclusive Photoproduction off the Proton journal August 2019

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Related Subjects

42 ENGINEERING
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
Avalanche
Cluster counting
Drift chamber
Tracking