Open AccessDesign of a compact, cryogen-free superconducting solenoid for the electron lens of the Fermilab Integrable Optics Test Accelerator (IOTA)
Author(s) -
Ram Dhuley,
C. Boffo,
V.S. Kashikhin,
Antti Kolehmainen,
D. Perini,
G. Stancari
Publication year - 2021
Publication title -
journal of instrumentation
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.741
H-Index - 84
ISSN - 1748-0221
DOI - 10.1088/1748-0221/16/03/t03009
Subject(s) - fermilab , solenoid , physics , solenoidal vector field , superconducting magnet , cryocooler , particle accelerator , optics , beam (structure) , superconductivity , nuclear physics , mechanics , condensed matter physics , quantum mechanics , vector field
The proposed electron lens for Fermilab's Integrable Optics Test Accelerator (IOTA) will broaden its capabilities by enabling new research in nonlinear integrable optics, space-charge compensation, proton beam cooling, and more. The electron lens is based on a 5–10 keV, 1–2 A electron beam, shaped using a 0.7 m long, 0.8 T solenoidal magnetic field. A cryogen-free superconducting solenoid has been designed to provide this solenoidal field, taking into consideration the constraints on space, utilities, and infrastructure in the IOTA experimental hall. The solenoid is made of copper stabilized niobium-titanium conductor, conduction-cooled using 4 K closed-cycle cryocoolers. This paper describes the overall design of the solenoid encompassing its mechanical construction, current leads optimization, cryogenic thermal modeling that provides estimates of cooldown time and static/dynamic heat loads, and quench analysis.