skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

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

Abstract

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/CO 2 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.

Authors:
 [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)
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility, Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1343106
Report Number(s):
JLAB-PHY-16-2234; DOE/OR/-23177-3782
Journal ID: ISSN 0168-9002; PII: S0168900216302893; TRN: US1700530
Grant/Contract Number:
AC05-06OR23177
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment
Additional Journal Information:
Journal Volume: 845; Journal Issue: C; Journal ID: ISSN 0168-9002
Publisher:
Elsevier
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 42 ENGINEERING; Tracking; Drift chamber; Avalanche; Cluster counting

Citation Formats

Pentchev, L., Barbosa, F., Berdnikov, V., Butler, D., Furletov, S., Robison, L., and Zihlmann, B. Studies with cathode drift chambers for the GlueX experiment at Jefferson Lab. United States: N. p., 2017. Web. doi:10.1016/j.nima.2016.04.076.
Pentchev, L., Barbosa, F., Berdnikov, V., Butler, D., Furletov, S., Robison, L., & Zihlmann, B. Studies with cathode drift chambers for the GlueX experiment at Jefferson Lab. United States. doi:10.1016/j.nima.2016.04.076.
Pentchev, L., Barbosa, F., Berdnikov, V., Butler, D., Furletov, S., Robison, L., and Zihlmann, B. Sat . "Studies with cathode drift chambers for the GlueX experiment at Jefferson Lab". United States. doi:10.1016/j.nima.2016.04.076. https://www.osti.gov/servlets/purl/1343106.
@article{osti_1343106,
title = {Studies with cathode drift chambers for the GlueX experiment at Jefferson Lab},
author = {Pentchev, L. and Barbosa, F. and Berdnikov, V. and Butler, D. and Furletov, S. and Robison, L. and Zihlmann, B.},
abstractNote = {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.},
doi = {10.1016/j.nima.2016.04.076},
journal = {Nuclear Instruments and Methods in Physics Research. Section A, Accelerators, Spectrometers, Detectors and Associated Equipment},
number = C,
volume = 845,
place = {United States},
year = {Sat Apr 22 00:00:00 EDT 2017},
month = {Sat Apr 22 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record

Save / Share:
  • A technique for calibrating cathode strip gains in multiwire drift chambers of the GlueX experiment is described. The accuracy of the technique is estimated based on Monte Carlo generated data with known gain coefficients in the strip signal channels. One of the four detector sections has been calibrated using cosmic rays. Results of drift chamber calibration on the accelerator beam upon inclusion in the GlueX experimental setup are presented.
  • A drift detector system designed to detect charged particle tracks in the GlueX experiment dedicated to study the nature of confinement is described. The key design features of the drift chambers associated with the requirement of a minimum material budget in the path of secondary particles are presented. The spatial resolution and the detection efficiency have been measured with cosmic rays using the automatic data acquisition system.
  • The High Resolution Spectrometers in Hall A at Jefferson Laboratory have been instrumented with state-of-the-art Vertical Drift Chambers designed and constructed by the Nuclear Interactions Group at MITLNS in conjunction with the Physics Division at Jefferson Lab. These chambers rely on a unique, high cell-density design made possible by the absence of field-shaping wires. Each chamber has an inert per-plane resolution for 5-cell cosmic ray track of 145 mu-m FWHM when operated on the bench at -4.8 kV with argon-isobutane gas, and 225 mu-m FWHM for 5-cell electron tracks when operated in the High Resolution Spectrometer detector stack at -4.0more » kV with argon-ethane gas. The design and construction facilities wire placement and replacement to 50 mu-m, very low dark current, and no crosswalk. The detectors have been in almost continuous use since April 1996, providing reliable, high-resolution charged-particles tracking data for the hall A physics program.« less
  • The High Resolution Spectrometers in Hall A at Jefferson Laboratory have been instrumented with state-of-the-art Vertical Drift Chambers designed and constructed by the Nuclear Interactions Group at MITLNS in conjunction with the Physics Division at Jefferson Lab. These chambers rely on a unique, high cell-density design made possible by the absence of field-shaping wires. Each chamber has an inert per-plane resolution for 5-cell cosmic ray track of 145 mu-m FWHM when operated on the bench at -4.8 kV with argon-isobutane gas, and 225 mu-m FWHM for 5-cell electron tracks when operated in the High Resolution Spectrometer detector stack at -4.0more » kV with argon-ethane gas. The design and construction facilities wire placement and replacement to 50 mu-m, very low dark current, and no crosswalk. The detectors have been in almost continuous use since April 1996, providing reliable, high-resolution charged-particles tracking data for the hall A physics program.« less
  • The search for gluonic degrees of freedom in mesons is an experimental challenge. The most promising approach is to look for mesons with exotic quantum numbers that can not be described by quark degrees of freedom only. The GlueX experiment at Jefferson Lab in Hall-D, currently under construction, will search for such hybrid mesons with exotic quantum numbers by scattering a linearly polarized high energetic photon beam off a liquid hydrogen target. An amplitude analysis will be employed to search for such resonances in the data and determine their quantum numbers.