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Tests of a large air-core superconducting solenoid as a nuclear-reaction-product spectrometer

Journal Article · · Rev. Sci. Instrum.; (United States)
DOI:https://doi.org/10.1063/1.1139368· OSTI ID:6407524
An air-core superconducting solenoid, with a diameter of 0.2 m and a length of 0.4 m, has been configured for use as a heavy-ion reaction-product spectrometer (E/Aless than or equal to5 MeV/u) near theta = 0 /sup 0/. The spectrometer has a large solid angle (10--35 msr) and properties suitable for time-of-flight measurements with flight paths approx. > 2 m. The performance of the spectrometer was established using ..cap alpha..-particle sources and nuclear-reaction products from heavy-ion collisions. The characteristics of air-core magnets are compared to those of steel-yoke magnets. The simplicity and ease of operation of the air-core magnet, without significant problems from the (axial) fringe fields, suggests that larger air-core magnets with d..cap omega..greater than or equal to20 msr and capable of focusing ions with E/Agreater than or equal to30 MeV/u are feasible. Other applications of solenoids and combinations of solenoids with radial electric-field lenses (ELCO lenses) are also discussed, including designs which focus more than one charge state simultaneously.
Research Organization:
Department of Physics, University of Michigan, Ann Arbor, Michigan 48109
OSTI ID:
6407524
Journal Information:
Rev. Sci. Instrum.; (United States), Journal Name: Rev. Sci. Instrum.; (United States) Vol. 58:9; ISSN RSINA
Country of Publication:
United States
Language:
English