R&D ERL: HTS Solenoid

Gupta, R. ; Muratore, J. ; Plate, S.

Brookhaven National Laboratory. Collider-Accelerator Department.

关键词: Critical Temperature;    High-Tc Superconductors;    Solenoids;    Electron Beams;    Rf Systems;   

DOI  :  10.2172/1013454
RP-ID  :  BNL--90931-2010-IR
RP-ID  :  DE-AC02-98CH10886
RP-ID  :  1013454

美国|英语

来源: UNT Digital Library

【 摘 要 】

An innovative feature of the ERL project is the use of a solenoid made with High Temperature Superconductor (HTS) with the Superconducting RF cavity. The HTS solenoid design offers many advantages because of several unique design features. Typically the solenoid is placed outside the cryostat which means that the beam gets significantly defused before a focusing element starts. In the current design, the solenoid is placed inside the cryostat which provides an early focusing structure and thus a significant reduction in the emittance of the electron beam. In addition, taking full advantage of the high critical temperature of HTS, the solenoid has been designed to reach the required field at {approx}77 K, which can be obtained with liquid nitrogen. This significantly reduces the cost of testing and allows a variety of critical pre-tests which would have been prohibitively expensive at 4 K in liquid helium because of the additional requirements of cryostat and associated facilities.