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Title: BNL 56 MHz HOM damper prototype fabrication at JLAB

Abstract

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.

Authors:
; ; ; ; ; ;
Publication Date:
Research Org.:
Brookhaven National Laboratory (BNL), Upton, NY (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP) (SC-26)
OSTI Identifier:
1223679
Report Number(s):
BNL-108363-2015-CP
R&D Project: KBCH139; KB0202011
DOE Contract Number:  
DE-SC00112704
Resource Type:
Conference
Resource Relation:
Conference: 6th International Particle Accelerator Conference (IPAC’15); Richmond, VA; 20150503 through 20150508
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS

Citation Formats

Huque, N., McIntyre, G., Daly, E. F., Clemens, W., Wu, Q., Seberg, S., and Bellavia, S. BNL 56 MHz HOM damper prototype fabrication at JLAB. United States: N. p., 2015. Web.
Huque, N., McIntyre, G., Daly, E. F., Clemens, W., Wu, Q., Seberg, S., & Bellavia, S. BNL 56 MHz HOM damper prototype fabrication at JLAB. United States.
Huque, N., McIntyre, G., Daly, E. F., Clemens, W., Wu, Q., Seberg, S., and Bellavia, S. Sun . "BNL 56 MHz HOM damper prototype fabrication at JLAB". United States. https://www.osti.gov/servlets/purl/1223679.
@article{osti_1223679,
title = {BNL 56 MHz HOM damper prototype fabrication at JLAB},
author = {Huque, N. and McIntyre, G. and Daly, E. F. and Clemens, W. and Wu, Q. and Seberg, S. and Bellavia, S.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {5}
}

Conference:
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