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Device and Technique for In-situ Coating of the RHIC Cold Bore Vacuum Tubes with Thick OFHC

To mitigate electron clouds & unacceptable ohmic heating problems in RHIC, we developed a robotic plasma deposition technique & device to in-situ coat the RHIC 316LN SS cold bore tubes based on mobile mole mounted magnetrons for OFHC deposition. Scrubbed Cu has low SEY and suppress electron...

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Autores principales: Hershcovitch, Ady, Blaskiewicz, Michael, Brennan, Joseph, Fischer, Wolfram, Liaw, Chong-Jer, Meng, Wuzheng, Todd, Robert, Custer, Art, Erickson, Mark, Jamshidi, Nader, Poole, Henry, Jimenez, José, Neupert, Holger, Taborelli, Mauro, Yin Vallgren, Christina, Sochugov, Nikolay
Lenguaje:eng
Publicado: 2013
Materias:
Acceso en línea:http://cds.cern.ch/record/2010146
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author Hershcovitch, Ady
Blaskiewicz, Michael
Brennan, Joseph
Fischer, Wolfram
Liaw, Chong-Jer
Meng, Wuzheng
Todd, Robert
Custer, Art
Erickson, Mark
Jamshidi, Nader
Poole, Henry
Jimenez, José
Neupert, Holger
Taborelli, Mauro
Yin Vallgren, Christina
Sochugov, Nikolay
author_facet Hershcovitch, Ady
Blaskiewicz, Michael
Brennan, Joseph
Fischer, Wolfram
Liaw, Chong-Jer
Meng, Wuzheng
Todd, Robert
Custer, Art
Erickson, Mark
Jamshidi, Nader
Poole, Henry
Jimenez, José
Neupert, Holger
Taborelli, Mauro
Yin Vallgren, Christina
Sochugov, Nikolay
author_sort Hershcovitch, Ady
collection CERN
description To mitigate electron clouds & unacceptable ohmic heating problems in RHIC, we developed a robotic plasma deposition technique & device to in-situ coat the RHIC 316LN SS cold bore tubes based on mobile mole mounted magnetrons for OFHC deposition. Scrubbed Cu has low SEY and suppress electron cloud formation. Room temperature RF resistivity measurement of Cu coated SS RHIC tube samples indicate that 10 μm of Cu coating has conductivity close to copper tubing. A 50 cm long copper cathode magnetron, mounted on a carriage with spring loaded wheels, was successfully operated, traversed magnet interconnect bellows and adjusted for variations in vacuum tube diameter, while keeping the magnetron centered. To maximize cathode lifetime, Cu cathode thickness was maximized its gap to vacuum tube minimized; movable magnet package is used. Novel cabling and vacuum-atmosphere interface system is being developed. Deposition experiments show no indentation in or damage to coating after wheels roll over coated areas; i.e. train like assembly option is a viable for in-situ RHIC coating. Details of experimental setup & coating of full-scale magnet tube sandwiched between bellows will be presented.
id oai-inspirehep.net-1337378
institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2013
record_format invenio
spelling oai-inspirehep.net-13373782022-08-17T13:29:26Zhttp://cds.cern.ch/record/2010146engHershcovitch, AdyBlaskiewicz, MichaelBrennan, JosephFischer, WolframLiaw, Chong-JerMeng, WuzhengTodd, RobertCuster, ArtErickson, MarkJamshidi, NaderPoole, HenryJimenez, JoséNeupert, HolgerTaborelli, MauroYin Vallgren, ChristinaSochugov, NikolayDevice and Technique for In-situ Coating of the RHIC Cold Bore Vacuum Tubes with Thick OFHCAccelerators and Storage RingsTo mitigate electron clouds & unacceptable ohmic heating problems in RHIC, we developed a robotic plasma deposition technique & device to in-situ coat the RHIC 316LN SS cold bore tubes based on mobile mole mounted magnetrons for OFHC deposition. Scrubbed Cu has low SEY and suppress electron cloud formation. Room temperature RF resistivity measurement of Cu coated SS RHIC tube samples indicate that 10 μm of Cu coating has conductivity close to copper tubing. A 50 cm long copper cathode magnetron, mounted on a carriage with spring loaded wheels, was successfully operated, traversed magnet interconnect bellows and adjusted for variations in vacuum tube diameter, while keeping the magnetron centered. To maximize cathode lifetime, Cu cathode thickness was maximized its gap to vacuum tube minimized; movable magnet package is used. Novel cabling and vacuum-atmosphere interface system is being developed. Deposition experiments show no indentation in or damage to coating after wheels roll over coated areas; i.e. train like assembly option is a viable for in-situ RHIC coating. Details of experimental setup & coating of full-scale magnet tube sandwiched between bellows will be presented.oai:inspirehep.net:13373782013
spellingShingle Accelerators and Storage Rings
Hershcovitch, Ady
Blaskiewicz, Michael
Brennan, Joseph
Fischer, Wolfram
Liaw, Chong-Jer
Meng, Wuzheng
Todd, Robert
Custer, Art
Erickson, Mark
Jamshidi, Nader
Poole, Henry
Jimenez, José
Neupert, Holger
Taborelli, Mauro
Yin Vallgren, Christina
Sochugov, Nikolay
Device and Technique for In-situ Coating of the RHIC Cold Bore Vacuum Tubes with Thick OFHC
title Device and Technique for In-situ Coating of the RHIC Cold Bore Vacuum Tubes with Thick OFHC
title_full Device and Technique for In-situ Coating of the RHIC Cold Bore Vacuum Tubes with Thick OFHC
title_fullStr Device and Technique for In-situ Coating of the RHIC Cold Bore Vacuum Tubes with Thick OFHC
title_full_unstemmed Device and Technique for In-situ Coating of the RHIC Cold Bore Vacuum Tubes with Thick OFHC
title_short Device and Technique for In-situ Coating of the RHIC Cold Bore Vacuum Tubes with Thick OFHC
title_sort device and technique for in-situ coating of the rhic cold bore vacuum tubes with thick ofhc
topic Accelerators and Storage Rings
url http://cds.cern.ch/record/2010146
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