Title :
Development of a compact system for high-resolution X-ray detection using a SQUID amplifier
Author :
Ikeda, T. ; Kato, H. ; Kawai, K. ; Miyasaka, H. ; Oku, T. ; Ootani, W. ; Otani, C. ; Sato, H. ; Shimizu, R.M. ; Watanabe, H. ; Nakagawa, H. ; Akoh, H. ; Aoyagi, M. ; Taino, T.
Author_Institution :
RIKEN, Inst. of Phys. & Chem. Res., Saitama, Japan
fDate :
6/1/1999 12:00:00 AM
Abstract :
A compact system for an STJ-based high resolution X-ray detection system using a SQUID amplifier has been developed. A noise level of less than 4.8 mV at the SQUID output pulse height of 1.2 V for Nb-based STJ signals was achieved in the temperature range of 1.7-4.2 K with good reproducibility under an external magnetic field of about 0.01 Tesla, which was applied to suppress the Josephson current of the STJ. The results show the possibility of constructing a compact STJ-based X-ray detection system with an ´on-site´ low noise SQUID preamplifier.
Keywords :
SQUIDs; X-ray detection; preamplifiers; superconducting particle detectors; 0.01 tesla; 1.7 to 4.2 K; Josephson current suppression; SQUID amplifier; calibration; compact system; critical current; external magnetic field; high-resolution X-ray detection; on-site low noise SQUID preamplifier; reproducibility; superconducting tunnel junction-based system; Josephson effect; Magnetic fields; Magnetic noise; Noise level; Pulse amplifiers; Reproducibility of results; SQUIDs; Signal resolution; Temperature distribution; X-ray detection;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
