CEBAF´s SRF cavity manufacturing and some performance limitations

Author

Benesch, J.F. ; Mammosser, J.

Author_Institution

Continuous Electron Beam Accel. Facility, Newport News, VA, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

834

Lastpage

836

Abstract

Construction of the CEBAF (Continuous Electron Beam Accelerator Facility) recirculating linac represents the largest scale application of superconducting RF (SRF) technology to date. The accelerating structures in CEBAF are 169 pairs of 1.5 GHz SRF five-cell cavities-9 pairs in an injector and 80 pairs each in two linacs. Commissioning is now underway, with full energy beam expected in early 1995. All of the cavities have been assembled and have completed RF testing at 2.0 K in vertical dewars and in the accelerator. There was a significant reduction in performance in the accelerator. The difference in Q is ascribed to hydride precipitation enhanced by the slower cooldown in the accelerator.<>

Keywords

accelerator RF systems; accelerator cavities; electron accelerators; electron device manufacture; superconducting cavity resonators; 1.5 GHz; 2 K; CEBAF; CEBAF recirculating linac; Continuous Electron Beam Accelerator Facility; RF testing; accelerating structures; hydride precipitation; performance limitations; superconducting RF cavity manufacture; vertical dewars; Acceleration; Assembly; Electron accelerators; Electron beams; Life estimation; Linear particle accelerator; Manufacturing; Radio frequency; Structural beams; Testing;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.402677

Filename

402677