Author/Authors :
Bricola، نويسنده , , S. and Brunetti، نويسنده , , R. and Calligarich، نويسنده , , E. and Cambiaghi، نويسنده , , M. and De Vecchi، نويسنده , , C. and Dolfini، نويسنده , , R. and Menegolli، نويسنده , , A. T. Prata، نويسنده , , M. and Prata، نويسنده , , M.C. and Raselli، نويسنده , , G.L. and Rossella، نويسنده , , M. and Scagliotti، نويسنده , , C. and Vignoli، نويسنده , , C.، نويسنده ,
Abstract :
We are developing a photodetector sensitive to liquid noble gas scintillation light which is able to operate down to liquid nitrogen temperature (77 K). It has to be able to produce fast signals for timing and triggering purposes in multi-kiloton liquid argon time projection chambers.
died the possibility to couple a standard photocathode to a suitable electron multiplication system in gas. In the first part of the programme the gas avalanche multiplication at cryogenic temperature and low pressure was studied. The second part of the programme foresees the production of a photocathode able to operate at low temperature. A complete detector prototype is going to be set up. It will consist of a simple CsSb photocathode and a multiplication stage made of 100 μ m stainless steel wires. We present the results of the evaluation of the gain attainable with different gas mixtures.
Keywords :
Liquid argon TPC , Cryogenic detectors , Photodetectors , Gas avalanche multiplication
