A cryogenic current-measuring device with nano-ampere resolution at the storage ring TARN II

Authors
Tanabe, T Chida, K Shinada, K
Citation
T. Tanabe et al., A cryogenic current-measuring device with nano-ampere resolution at the storage ring TARN II, NUCL INST A, 427(3), 1999, pp. 455-464
Citations number
9
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
ISSN journal
01689002 → ACNP
Volume
427
Issue
3
Year of publication
1999
Pages
455 - 464
Database
ISI
SICI code
0168-9002(19990521)427:3<455:ACCDWN>2.0.ZU;2-J
Abstract
In cooler-ring experiments, an accurate and non-destructive current measure ment is essential for determining the reaction cross sections. The lowest c urrent which can be measured by the DC current transformer commonly used so far is some mu A. In order to measure a low-beam current from nA to mu A. we made a cryogenic current-measuring device using a superconducting quantu m interference devices (SQUID), and measured the circulating ion current at the cooler ring TARN II. This paper gives the design and performance of th e device. (C) 1999 Elsevier Science B.V. All rights reserved.