Title :
Ion beam measurement with a HTS SQUID current comparator
Author :
Hao, L. ; Macfarlane, J.C. ; Gallop, J.C.
Author_Institution :
Nat. Phys. Lab., Teddington, UK
Abstract :
Superconducting direct current comparators are well established with low temperature superconductors and SQUIDs. We have begun investigations into HTS current comparator designs, with a readout SQUID also made from HTS. This work aims to produce a system capable of high accuracy noninvasive measurement of an ion beam current (in the range 1 /spl mu/A to 1 mA). Measurements of the current ratio accuracy are reported and preliminary experimental results on the measurement of ion beams are described.
Keywords :
SQUIDs; current comparators; electric current measurement; high-temperature superconductors; ion beams; particle beam diagnostics; 1 muA to 1 mA; HTSC SQUID current comparator; current ratio accuracy; cylindrical geometry; gradiometer loops; high accuracy noninvasive measurement; ion beam current; ion beam measurement; readout SQUID; superconducting direct current comparators; Current measurement; Detectors; High temperature superconductors; Ion beams; SQUIDs; Superconducting filaments and wires; Superconducting films; Superconducting materials; Superconductivity; Testing;
Conference_Titel :
Precision Electromagnetic Measurements Digest, 2000 Conference on
Conference_Location :
Sydney, NSW, Australia
Print_ISBN :
0-7803-5744-2
DOI :
10.1109/CPEM.2000.851092
