Design of the CEBAF energy upgrade cryomodule cold mass

Author

Hogan, J. ; Campisi, I.E. ; Delayen, J. ; Feldl, E. ; Getz, R. ; Guerra, A. ; Henry, J. ; Mammosser, J. ; Phillips, L. ; Preble, J. ; Schneider, W.J. ; Smith, K. ; Takacs, J. ; Turlington, L. ; Wiseman, M.A.

Author_Institution

Thomas Jefferson Nat. Accelerator Facility, Newport News, VA, USA

Volume

2

fYear

2001

fDate

6/23/1905 12:00:00 AM

Firstpage

1595

Abstract

The Jefferson Laboratory´s CEBAF Energy Upgrade to 12 GeV will be accomplished by employing new cryomodules with an increase in effective length of 40 percent while maintaining the same nominal cryomodule slot length within the linac. This is being achieved by changing from an eight five-cell cavity structure to an eight seven-cell cavity structure and removing all bellows between the cavities along the beamline. This approach has presented significant challenges with respect to the design as it pertains to the cooldown, support, alignment and tuning criteria. The solutions to these design challenges will be presented with an emphasis on cavity operational criteria along with the integrated support components to include higher order mode couplers, fundamental power couplers and tuning accommodations for a one-hertz resolution

Keywords

accelerator RF systems; accelerator cavities; beam handling equipment; cooling; cryogenics; electron accelerators; electron beam focusing; linear accelerators; tuning; 12 GeV; CEBAF energy upgrade cryomodule cold mass; JLAB; Jefferson Laboratory; alignment; beamline; bellows; cavity operational criteria; continuous electron beam accelerator; cooldown; cryomodule slot length; effective length; five-cell cavity structure; fundamental power couplers; higher order mode couplers; linear accelerator; support; tuning; Bellows; Couplers; Delay effects; Electron accelerators; Electron beams; Energy resolution; Laboratories; Linear particle accelerator; Tuners; Tuning;

fLanguage

English

Publisher

ieee

Conference_Titel

Particle Accelerator Conference, 2001. PAC 2001. Proceedings of the 2001

Print_ISBN

0-7803-7191-7

Type

conf

DOI

10.1109/PAC.2001.986759

Filename

986759