Novel improvement method of energy resolution for superconducting tunnel junction X-ray detectors

被引：4

作者：

Nakamura, T ^{[1
]}

Kishimoto, M

Katagiri, M

Ohkubo, M

Fukuda, D

Takahashi, H

Nakazawa, M

机构：

[1] Japan Atom Energy Res Inst, Adv Sci Res Ctr, Pulsed Neutron Imaging Lab, Tokai, Ibaraki 3191195, Japan

[2] Univ Tokyo, Dept Quantum Engn & Syst Sci, Tokyo, Japan

[3] Electrotech Lab, Tsukuba, Ibaraki 3058568, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2000年 / 444卷 / 1-2期

关键词：

X-ray detector; superconducting tunnel junction; current read-out; signal processing; pulse dividing; photopeak discrimination;

D O I：

10.1016/S0168-9002(99)01317-0

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

We propose a novel signal processing method to improve the energy resolution of superconducting tunnel junction X-ray detectors with quasiparticle trapping. Current signals produced in the detectors are amplified by a fast current preamplifier with a bandwidth of 110 MHz, and divided into two parts, i.e., the rise part and the decay part. It was found that the best energy resolution was obtained by using the integrated charge of the rise part. This indicates that the charge of the decay parts has a charge scatter larger than that of the rise part. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：11 / 14

页数：4

共 7 条

[1] High-resolution X-ray detectors with high-speed SQUID readout of superconducting tunnel junctions [J].