A liquid-helium-free superconducting electron cooler at the storage ring TARN II

Citation
T. Tanabe et al., A liquid-helium-free superconducting electron cooler at the storage ring TARN II, NUCL INST A, 441(3), 2000, pp. 326-338
Citations number
18
Language
INGLESE
art.tipo
Article
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
0168-9002 → ACNP
Volume
441
Issue
3
Year of publication
2000
Pages
326 - 338
Database
ISI
SICI code
0168-9002(20000301)441:3<326:ALSECA>2.0.ZU;2-H
Abstract
A superconducting electron cooler with an adiabatic expansion factor of 100 was designed for high-precision experiments and high-speed cooling. The gu n solenoid is a liquid-helium-free superconducting magnet with a 20-cm room -temperature bore, which can produce a magnetic field of up to 3.5 T, An el ectron beam is expanded from a diameter of 5 to 50 mm in a gradually decrea sing solenoid field from 3.5 T to 35 mT. With this cooler, a transverse ele ctron temperature on the order of 1 meV was attained. The longitudinal cool ing force was measured with an induction accelerator as functions of the io n and electron currents, and the expansion factor. The longitudinal cooling force does not depend much on the expansion factor. (C) 2000 Elsevier Scie nce B.V. All rights reserved.