The X-ray Drift Chamber (Xdc): Use of Conventional Mwpcs as Drift Chambers for Detection With High-energy Resolution of Soft X-rays With Energy Down to 500-ev
Apr, 197829 pages
Published in:
- Nucl.Instrum.Meth. 157 (1978) 441
Report number:
- PRINT-78-0755 (CERN)
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Abstract: (Elsevier)
A new way of using conventional MWPCs for detection with good energy resolution of low-energy X-rays is suggested. The method is based on the measurement of the drift-time of the primary electrons and on the strong energy dependence of the absorption cross-section of low-energy X-rays. While the low-energy detection threshold is, as usual, determined by the thickness of the chamber entrance window and can be set below 500 eV with thin windows, the energy resolution is no longer dictated by the number of primary electrons, but instead by the accuracy of the drift-time measurement. The method is illustrated in the 3–6 keV energy region, using p He data collected with the high-pressure cylindrical MWPC used by the “Protonium” Collaboration in Exp. S142 at CERN.- DRIFT CHAMBER: PHOTON
- PROPORTIONAL CHAMBER
- PHOTON: ABSORPTION
- ABSORPTION: PHOTON
- DRIFT CHAMBER: ENERGY RESOLUTION
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