✦ LIBER ✦

Progress in superconducting tunnel junction detectors

✍ Scribed by Masahiko Kurakado

Publisher: John Wiley and Sons
Year: 1999
Tongue: English
Weight: 182 KB
Volume: 28
Category: Article
ISSN: 0049-8246
DOI: 10.1002/(sici)1097-4539(199909/10)28:5<388::aid-xrs371>3.0.co;2-u

No coin nor oath required. For personal study only.

✦ Synopsis

Superconducting tunnel junction (STJ) detectors have great potential as ultra-high energy-resolution detectors even at high count rates of over 10 4 counts per second. In fact, single-junction detectors showed energy resolutions of better than 30 eV for 5.9 keV x-rays, 6 eV for 277 eV x-rays and 0.2 eV for 2 eV optical photons. Series-junction detectors have much higher detection efficiencies than single-junction detectors. A series-junction detector equipped with a position-sensing mechanism has shown a position resolution of about 35 µm in a sensing area with a diameter of 2.2 mm. The position resolution can improve the energy resolution of the detector. This paper briefly reviews the main principles of and progress in STJ detectors and gives a perspective of these detectors.

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