Recent Results on 500 MHz Superconducting Cavities at KEK
Two 500 MHz spherical cavities built from Nb were tested. Locations of weak spots at breakdown field levels were detected and surface processing was repeated to remove the weak spots. Q 0 and the accelerating field gradient were improved after each reprocessing. Q 0 =4.1–4.2×10 9 and E acc =6.5 MV/m...
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| Veröffentlicht in: | Japanese Journal of Applied Physics 1982-01, Vol.21 (2A), p.L86 |
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| Sprache: | eng |
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| container_issue | 2A |
| container_start_page | L86 |
| container_title | Japanese Journal of Applied Physics |
| container_volume | 21 |
| creator | Kojima, Yuzo Furuya, Takaaki Nakazato, Toshiharu |
| description | Two 500 MHz spherical cavities built from Nb were tested. Locations of weak spots at breakdown field levels were detected and surface processing was repeated to remove the weak spots.
Q
0
and the accelerating field gradient were improved after each reprocessing.
Q
0
=4.1–4.2×10
9
and
E
acc
=6.5 MV/m at 4.2 K,
Q
0
=3.2–4.8×10
10
and
E
acc
=7.0 MV/m at 1.8 K were obtained for both cavities. |
| doi_str_mv | 10.1143/JJAP.21.L86 |
| format | Article |
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Q
0
and the accelerating field gradient were improved after each reprocessing.
Q
0
=4.1–4.2×10
9
and
E
acc
=6.5 MV/m at 4.2 K,
Q
0
=3.2–4.8×10
10
and
E
acc
=7.0 MV/m at 1.8 K were obtained for both cavities.</description><identifier>ISSN: 0021-4922</identifier><identifier>EISSN: 1347-4065</identifier><identifier>DOI: 10.1143/JJAP.21.L86</identifier><language>eng</language><ispartof>Japanese Journal of Applied Physics, 1982-01, Vol.21 (2A), p.L86</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c326t-42ef385d4d4abb4d19abfc989c5c4b2ffb1682c85f7814a319b81591acc391823</citedby><cites>FETCH-LOGICAL-c326t-42ef385d4d4abb4d19abfc989c5c4b2ffb1682c85f7814a319b81591acc391823</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids></links><search><creatorcontrib>Kojima, Yuzo</creatorcontrib><creatorcontrib>Furuya, Takaaki</creatorcontrib><creatorcontrib>Nakazato, Toshiharu</creatorcontrib><title>Recent Results on 500 MHz Superconducting Cavities at KEK</title><title>Japanese Journal of Applied Physics</title><description>Two 500 MHz spherical cavities built from Nb were tested. Locations of weak spots at breakdown field levels were detected and surface processing was repeated to remove the weak spots.
Q
0
and the accelerating field gradient were improved after each reprocessing.
Q
0
=4.1–4.2×10
9
and
E
acc
=6.5 MV/m at 4.2 K,
Q
0
=3.2–4.8×10
10
and
E
acc
=7.0 MV/m at 1.8 K were obtained for both cavities.</description><issn>0021-4922</issn><issn>1347-4065</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1982</creationdate><recordtype>article</recordtype><recordid>eNotz09LwzAcxvEgCtbpyTeQu7Tmlz9dchxlOreKMvUckjSRymxHkgr66t3Q08P38sAHoWsgFQBnt-v14rmiULWyPkEFMD4vOanFKSoIoVByRek5ukjp45C14FAgtfXODxlvfZp2OeFxwIIQ_Lj6wS_T3kc3Dt3kcj-848Z89bn3CZuMN8vNJToLZpf81f_O0Nvd8rVZle3T_UOzaEvHaJ1LTn1gUnS848Za3oEyNjgllROOWxqChVpSJ0WYS-CGgbIShALjHFMgKZuhm79fF8eUog96H_tPE781EH1U66NaU9AHNfsFHE1I1w</recordid><startdate>19820101</startdate><enddate>19820101</enddate><creator>Kojima, Yuzo</creator><creator>Furuya, Takaaki</creator><creator>Nakazato, Toshiharu</creator><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19820101</creationdate><title>Recent Results on 500 MHz Superconducting Cavities at KEK</title><author>Kojima, Yuzo ; Furuya, Takaaki ; Nakazato, Toshiharu</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c326t-42ef385d4d4abb4d19abfc989c5c4b2ffb1682c85f7814a319b81591acc391823</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1982</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kojima, Yuzo</creatorcontrib><creatorcontrib>Furuya, Takaaki</creatorcontrib><creatorcontrib>Nakazato, Toshiharu</creatorcontrib><collection>CrossRef</collection><jtitle>Japanese Journal of Applied Physics</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kojima, Yuzo</au><au>Furuya, Takaaki</au><au>Nakazato, Toshiharu</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Recent Results on 500 MHz Superconducting Cavities at KEK</atitle><jtitle>Japanese Journal of Applied Physics</jtitle><date>1982-01-01</date><risdate>1982</risdate><volume>21</volume><issue>2A</issue><spage>L86</spage><pages>L86-</pages><issn>0021-4922</issn><eissn>1347-4065</eissn><abstract>Two 500 MHz spherical cavities built from Nb were tested. Locations of weak spots at breakdown field levels were detected and surface processing was repeated to remove the weak spots.
Q
0
and the accelerating field gradient were improved after each reprocessing.
Q
0
=4.1–4.2×10
9
and
E
acc
=6.5 MV/m at 4.2 K,
Q
0
=3.2–4.8×10
10
and
E
acc
=7.0 MV/m at 1.8 K were obtained for both cavities.</abstract><doi>10.1143/JJAP.21.L86</doi></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0021-4922 |
| ispartof | Japanese Journal of Applied Physics, 1982-01, Vol.21 (2A), p.L86 |
| issn | 0021-4922 1347-4065 |
| language | eng |
| recordid | cdi_crossref_primary_10_1143_JJAP_21_L86 |
| source | IOP Publishing Journals; Institute of Physics (IOP) Journals - HEAL-Link |
| title | Recent Results on 500 MHz Superconducting Cavities at KEK |
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