J. Phys. IV France 08 (1998) Pr3-147-Pr3-153
Invited PaperS. Pagano1, V.G. Palmieri2, O. Mukhanov3 and A. Esposito4
Josephson readout electronics for the hybrid superconducting pixel detector
1 Istituto di Cibemetica del CNR, Via Toiano 6, 80072 Arco Felice, Italy
2 Laboratory for High Energy Physics, University of Berne, Sidlerstrasse 5, 3012 Bern, Switzerland
3 HYPRES Inc., 175 Clearbrook Rd., Elmsford NY 10523, U.S.A.
4 Electrotechnical Laboratories, 1-1-4 Umezono, Tsukuba, Ibaraki 305, Japan
We have recently demonstrated the Hybrid Superconducting Pixel Detector (HSPD) principle using a test configuration. This demonstrator device consists of a semiconductive particle detector coupled to a Josephson Tunnel Junction (JTJ) acting as current sensitive discriminator. We used Minimum Ionising Particles (MIPs) as events generators. Experimental data show the first case of MIPs detection using JTJ. The efficiency of the demonstrator circuit reaches 90% with 2 MIPs and it will be improved once the complete device will be full integrated in one circuit. A second generation demonstrator, involving an eigth channel readout scheme fully implemented with superconducting electronics is being developed and will be discussed in some detail.
© EDP Sciences 1998