We have fabricated superconducting Nb/Al microstrip detectors. The low sensitivity to radiation damage and aging and the high energy resolution make these devices very attractive. The samples are fabricated by superposing a 2 mm × 2 mm Al area on a 5 μm wide, 100 μm long Nb strip. The thickness of each film is between 50 and 200 nm. We present the results both of steady and dynamical tests on Nb/Al bilayers, after irradiation with a 241Am alpha-source (T = 5.47 MeV). These devices can operate both in the on-off and in the auto-recovery regimes. We show that the performance of Nb/Al bilayers is better than single Nb strip devices.
Development of superconducting Nb/Al detectors
GRECO, Michela;MENICHETTI, Ezio;RINAUDO, Giuseppina;
2000-01-01
Abstract
We have fabricated superconducting Nb/Al microstrip detectors. The low sensitivity to radiation damage and aging and the high energy resolution make these devices very attractive. The samples are fabricated by superposing a 2 mm × 2 mm Al area on a 5 μm wide, 100 μm long Nb strip. The thickness of each film is between 50 and 200 nm. We present the results both of steady and dynamical tests on Nb/Al bilayers, after irradiation with a 241Am alpha-source (T = 5.47 MeV). These devices can operate both in the on-off and in the auto-recovery regimes. We show that the performance of Nb/Al bilayers is better than single Nb strip devices.
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