Physics – Instrumentation and Detectors
Scientific paper
2003-03-20
Physics
Instrumentation and Detectors
8 pages, 7 figures. Submitted to Nucl. Instr. and Meth. A
Scientific paper
10.1016/S0168-9002(03)02019-9
We have constructed and tested a 2d position sensitive parallel-plate gas ionization chamber with scanned charge transfer readout. The scan readout method described here is based on the development of a new position dependent charge transfer technique. It has been implemented by using gate strips perpendicularly oriented to the collector strips. This solution reduces considerably the number of electronic readout channels needed to cover large detector areas. The use of a 25 micron thick kapton etched circuit allows high charge transfer efficiency with a low gating voltage, consequently needing a very simple commutating circuit. The present prototype covers 8 x 8 cm^2 with a pixel size of 1.27 x 1.27 mm^2. Depending on the intended use and beam characteristics a smaller effective pixel is feasible and larger active areas are possible. This detector can be used for X-ray or other continuous beam intensity profile monitoring.
Gomez Facundo
Iglesias Alberto
Lobato R.
Mosquera J.
Pardo Juan
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