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Abstract
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 inherent per-plane resolution for 5-cell cosmic-ray tracks of 145 μm FWHM when operated on the bench at -4.8 kV with argon-isobutane gas, and 225 μm FWHM for 5-cell electron tracks when operated in the High-Resolution Spectrometer detector stack at -4.0 kV with argon-ethane gas. The design and construction facilitates wire placement and replacement to 50 μm, very low dark current, and no cross-talk. The detectors have been in almost continuous use since April 1996, providing reliable, high-resolution charged-particle tracking data for the Hall A physics program. A complete overview of this project is presented.
Original language | English |
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Pages (from-to) | 108-131 |
Journal | Nuclear Instruments & Methods in Physics Research. Section A: Accelerators, Spectrometers, Detectors, and Associated Equipment |
Volume | 474 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2001 |
Externally published | Yes |
Subject classification (UKÄ)
- Subatomic Physics
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Development of Radiation Detectors and Radiation-Detection Techniques
Fissum, K. (Researcher), Perrey, H. (Researcher), Scherzinger, J. (Researcher), Messi, F. (Researcher) & Mauritzson, N. (Researcher)
1996/01/01 → …
Project: Research
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Vertical Drift Chambers for Hall A at Jefferson Laboratory
Fissum, K. (Researcher)
1996/04/01 → 2004/12/31
Project: Research
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