Beyond the RICH: innovative photosensitive gaseous detectors for new fields of applications
P. Carlson 1, C. Iacobeaus 2, T.Francke 1,3, B. Lund-Jensen 1, L. Periale 4,5, V. Peskov 1, I. Rodionov 6
We have developed and successfully used several novel designs of photosensitive detectors in various applications. They can be roughly divided in two main categories:
The main advantage of these detectors is that rather high gains (>104) can be achieved in a single multiplication step. This is possible by, for instance, exploiting the secondary electron multiplication and limiting the energy of the steamers by distributed resistivity. The single step approach simplifies the design of detectors not only for RICH, but for other applications as well. The single step approach also allows very good position resolution to be achieved in some devices: 50 μm "on line" without applying any treatment method (like central of gravity) can be obtained. Another feature of the new detectors is the ability to operate in pure noble gases.
The results obtained demonstrate that the novel photosensitive gaseous detectors may strongly compete and in some applications are to superior to commercially available vacuum type detectors of UV radiation.
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