A One‐Mev/Nucleon Sloan and Lawrence Heavy‐Ion Linear Accelerator
作者:
G. Nassibian,
J. R. J. Bennett,
D. Broadbent,
S. Devons,
R. W. R. Hoisington,
V. E. Miller,
期刊:
Review of Scientific Instruments
(AIP Available online 1961)
卷期:
Volume 32,
issue 12
页码: 1316-1326
ISSN:0034-6748
年代: 1961
DOI:10.1063/1.1717241
出版商: AIP
数据来源: AIP
摘要:
A description is given of a small heavy‐ion linear accelerator based on the use of a twin transmission line as first suggested by Sloan and Lawrence. Ions are accepted if theire/mvalues are ⅛ or greater (relative to the proton) and are accelerated to a final energy of 1.04 Mev/nucleon. The accelerator has 40 drift tubes fitted with focusing grids, and about 350 kw of pulsed rf are needed for ions ofe/m=⅛. The radio frequency is 25 Mc, and the accelerator is pulsed at up to 50 pps with a pulse length of 500 &mgr;sec. Injection velocity is 0.007c, corresponding to a dc acceleration from the ion source through 180 kv for an ion ofe/m=⅛. Ions are produced in a pulsed dc arc of the Penning type operating in a magnetic field of 1000 gauss and the dc accelerating voltage is supplied by an electrostatic generator. Typical pulsed meter currents so far obtained are, for He+, input 4 ma, output 150 &mgr;a; for N2+, input 3 ma, output 75 &mgr;a. The accelerator is the first stage of three which will take the ions to a final energy of 10 Mev/nucleon. The second and third stages, which are under construction, will be cavity resonators of the Alvarez design.
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