BNL 56 MHz HOM Damper Prototype Fabrication at JLab

Conference · Tue Sep 01 00:00:00 EDT 2015

OSTI ID:1221887

Huque, Naeem A. ^[1]; Daly, Edward F. ^[1]; Clemens, William A. ^[1]; McIntyre, Gary T. ^[2]; Wu, Qiong ^[2]; Seberg, Scott ^[2]; Bellavia, Steve ^[2]

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1. Jefferson Lab., Newport News, VA (United States)
2. Brookhaven National Lab. (BNL), Upton, NY (United States)

A prototype Higher-Order Mode (HOM) Damper was fabricated at JLab for the Relativistic Heavy-Ion Collider's (RHIC) 56 MHz cavity at Brookhaven National Laboratory (BNL). Primarily constructed from high RRR Niobium and Sapphire, the coaxial damper presented significant challenges in electron-beam welding (EBW), brazing and machining via acid etching. The results of the prototype operation brought about changes in the damper design, due to overheating braze alloys and possible multi-pacting. Five production HOM dampers are currently being fabricated at JLab. This paper outlines the challenges faced in the fabrication process, and the solutions put in place.

• Research Organization: Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: AC05-06OR23177
• OSTI ID: 1221887
• Report Number(s): JLAB-ACC-15-2082; DOE/OR/23177-3420; TRN: US1601452
• Resource Relation: Conference: IPAC 2015, Richmond, VA (United States), 3-8 May 2015
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
36 MATERIALS SCIENCE
ELECTRON BEAM WELDING
BRAZING
BROOKHAVEN RHIC
MHZ RANGE 01-100
NIOBIUM
SAPPHIRE
ETCHING
BRAZING ALLOYS
SUPERCONDUCTING CAVITY RESONATORS
DESIGN
CHEMICAL MACHINING
ELECTROMAGNETIC FIELDS
MODE CONTROL