The OPAL silicon-tungsten calorimeter front end electronics Anderson, B.E.; Anderson, K.; Charalambous, A. ...
IEEE Transactions on Nuclear Science (Institute of Electrical and Electronics Engineers); (United States),
08/1994, Letnik:
41, Številka:
4
Journal Article, Conference Proceeding
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A pair of small angle silicon-tungsten (Si-W) calorimeters has been built to measure the luminosity to a precision better than 0.1% in the OPAL experiment at the Large Electron Positron (LEP) ...collider at CERN near Geneva. Each calorimeter contains 19 layers of tungsten (W) plates and silicon (Si) detectors, corresponding to a total of 22 radiation lengths, sampled by about 1 m/sup 2/ of detectors divided into 304/spl times/64 independently read out channels. A complete electronics system has been developed, from the preamplifier up to the VME read out and control interface. It includes a fast trigger based on analogue sums. This paper describes how a large number of channels have been implemented in a dense environment, thanks to the use of ASIC's directly bonded on the detector.< >
The radiation hardness of single-pad silicon detectors manufactured from non-standard silicon materials was studied up to proton fluences of 2–3×1014cm−2. The results are presented in terms of ...reverse current, full depletion voltage and charge collection efficiency as a function of the proton fluence.
Investigation of very long jet chambers
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
04/1986
Journal Article
The OPAL jet chamber full scale prototype
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment,
12/1986
Journal Article
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