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=== Cryogenic payload meeting (2013 Nov. 26th ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2011|Strategies for sapphire monolithic suspension(K. Yamamoto)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2014|Vertical blade metal spring (R. Takahashi)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2013|Control(D. Chen)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2015|Minutes(K. Yamamoto)]]


=== Cryogenic payload meeting (2013 Nov. 19th ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1998|Modeling of Type-A Vibration Isolation System (T. Sekiguchi)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2002|Vertical spring (blade metal spring)

(H. Ishizaki)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1995|Control(D. Chen)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=2003|Minutes(K. Yamamoto)]]

=== Cryogenic payload kickoff meeting (2013 Nov. 15th ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1992|Toward KAGRA cryogenic mirror system design(E. Hirose)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1990|Strategies for suspension: HC bonding and indium welds - Status and required R&D(A. Khalaidovski)]]
 . [[attachment:kickoffchen.pdf|OSEM and stepping motor]] (D. Chen)
 . [[attachment:cryo payload 15 Nov 2013.txt|Minutes]] (C. Tokoku and K. Yamamoto)

=== 20th cryogenic payload meeting (2013 Feb. 6 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1501|Current status (1/4 cryostat, Toshiba, Sapphire fibers)(K. Yamamoto)]]

=== 19th cryogenic payload meeting (2013 Jan. 9 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1470|Cryogenic accelerometer(D. Chen)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1469|Mechanical loss measurement of sapphire fibers and cryoduct with baffle(Y. Sakakibara)]]

=== 18th cryogenic payload meeting (2012 Dec. 12 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1424|Thermal Boundary Resistance(W. Johnson)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1423|Cryogenic accelerometer and sphere without DLC in Toshiba(D. Chen)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1422|Current status (Toshiba, 1/4 cryostat, sapphire fibers, ET meeting, Jena)(K. Yamamoto)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1420|Mechanical loss measurement of sapphire fibers and disks(Y. Sakakibara)]]

=== 17th cryogenic payload meeting (2012 Nov. 4 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1381|Reprot from Glasgow (Y. Sakakibara)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/DocDB/ShowDocument?docid=1383|Measurement of vibration of radiation shield(D. Chen)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1382|Current status (ELiTES meeting, Guests, Toshiba, Sapphire fibers)(K. Yamamoto)]]

=== 16th cryogenic payload meeting (2012 Sep. 26 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1293|Current status (Experiments in Toshiba, Suspension model, Sapphire fibers. Misc. )(K. Yamamoto)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1292|Radiation effect in initial cooling (Y. Sakakibara)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1294|Measurement of vibration of radiation shield(D. Chen)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1271|Separated Functions proposed for KAGRA suspensions(W. Johnson)]]

=== 15th cryogenic payload meeting (2012 Aug. 29 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1257|Report of ELiTES thermal noise workshop I (Optical experiment in Jena)(D. Chen)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1256|Report of ELiTES thermal noise workshop II (Parametric instability of ET) (K. Shibata)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1254|Current status (Toshiba, ELiTES, Baffle, Brittleness of Maraging, Cryogenic duct)(K. Yamamoto)]]

=== 14th cryogenic payload meeting (2012 Aug. 8 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1229|Cryogenic accelerometer (D. Chen)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1221|Initial cooling via radiation (Y. Sakakibara)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1225|Thermal conductivity of sapphire fibers (T. Ushiba)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1220|Current status (University of Toyama, ELiTES, Baffle, Mirror)(K. Yamamoto)]]

=== 13th cryogenic payload meeting (2012 July. 4 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1127|Other idea for suspension (W. Johnson)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1126|Silicon flexures suspension (R. DeSalvo)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1125|Current status(Measurement of Q values of sapphire fibers)(K. Shibata)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1124|Current status(ELiTES and Toyama workshop)(K. Yamamoto)]]

=== 12th cryogenic payload meeting (2012 June. 6 ICRR) ===
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1101|Silicon flexures suspension (R. DeSalvo)]]
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1102|Current status(Measurement of thermal conductivity of sapphire fiber)(T. Ushiba)]]
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1100|Current status(ELiTES and IMPEX sapphire fiber)(K. Yamamoto)]]

=== 11th cryogenic payload meeting (2012 April. 25 ICRR) ===
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=1019|Current status(ELiTES and Geometry of payload)(K. Yamamoto)]]

=== 10th cryogenic payload meeting (2012 April. 4 ICRR) ===
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=934|Current status (Research strategies and Geometry of payload)(K. Yamamoto)]]

=== 9th cryogenic payload meeting (2012 Mar. 7 ICRR) ===
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=896|Measurement of RRR of candidate materials (Shibata)]]
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=897|Material Selection for the Masses (5) and Lab Preparation(Tokoku)]]
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=895|Current status (Yamamoto)]]

=== 8th cryogenic payload meeting (2012 Feb. 8 ICRR) ===
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=863|Reduction of thermal radiation through a shield pipe for KAGRA (Sakakibara)]]
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=865|Material Selection for the Masses (4) and Lab Preparation(Tokoku)]]
 . ・[[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=864|Current status (Yamamoto)]]

=== 第七回 低温懸架打ち合わせ(2012.1.10 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=771|現状報告(マスとワイヤの材質選択と実験室準備)(東谷)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=769|現状報告(熱雑音とサファイアファイバ)(山元)]]

=== 第六回 低温懸架打ち合わせ(2011.11.30 ICRR) ===
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=716|Sapphire fiberの熱雑音(関口)]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/20111130_material_tokoku.pdf|4分の1実証機の準備の進捗およびマスの材質-(東谷)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=721|サファイアファイバ関連とparameterについて(山元)]]
 .

=== 第五回 低温懸架打ち合わせ(2011.10.26 ICRR) ===
 . ・ [[attachment:KAGRA/Subgroups/VAC/vertical-spring.pdf|低温用縦ばねの開発-(高橋)]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/20111026_material_tokoku.pdf|マスの材質-(東谷)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=640|高放射率材料の反射率測定(榊原)]]
 . ・ [[http://gwdoc.icrr.u-tokyo.ac.jp/cgi-bin/private/DocDB/ShowDocument?docid=639|並木精密宝石、今後のcryogenic payloadの方針(山元)]]

=== 第四回 低温懸架打ち合わせ(2011.09.28 ICRR) ===
 . ・ [[attachment:KAGRA/Subgroups/VAC/meeting110928.ppt|低温懸架打ち合わせ-(山元) 110928]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/tapered sapphire fiber 110928.pdf|テーパー付サファイアファイバー-(内山) 110928]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/榊bafdoublecone2.pdf|ダクトシールドからの入熱-(榊原) 110928]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/報告110928_TS.pdf|接合の進展 -常温接合打ち合わせ報告-(鈴木) 110928]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/minute (2011 Sep. 28).pdf|議事録-(山元) 110928]]

=== 第三回 低温懸架打ち合わせ(2011.08.31 ICRR) ===
 . ・ 低温懸架装置ミーティング(山元)110831
 . ・ [[attachment:KAGRA/Subgroups/VAC/110831coolingtime_sakakibara.pdf|初期冷却時間(榊原) 110831]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/110831highem_sakakibara.pdf|黒化処理材料の反射率測定(榊原) 110831]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/SapphireBond_CryoPayload3rd_TS_v1.pdf|接合の現状(鈴木) 110831]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/minutes110831_susp.pdf|議事録(山元) 110831]]

=== 第一回 低温懸架打ち合わせ(2011.07.01 KEK) ===
 . ・ [[attachment:KAGRA/Subgroups/VAC/kickoff110701.ppt|打ち合わせ資料(山元) 110701]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/PAB110621CryogenicsE2.ppt|参考資料(鈴木) 110701]]

=== 低温装置打ち合わせ ===
 . Vib. Isolator for 1W PTC 2011.06.27 at J. Torisha
 . ・ [[attachment:KAGRA/Subgroups/VAC/torisha110627.pdf|立ち会い報告 110627]]

.Report of annealing for thin Al bundles 2011.06.24 .・ [[attachment:Anneal_thin_Al_bundle110624v2.pdf|Heat Linkサンプルの焼鈍結果 110627]]

.Cryostat Shield (4th) 2011.2.24 and Cryostat Shield (4th) 2011.2.25, KEK Cryogenics Centre R110

 . ・ [[attachment:KAGRA/Subgroups/VAC/CryoShield110224_25Memo.rtf|打ち合わせメモ 11024および110225]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/LCGT_Shieldmode-110225.pdf|Cryostat Shields図 110225]]

.Cryostat Shield (4th) 2011.2.14 KEK Cryogenics Centre R110

 . ・ [[attachment:KAGRA/Subgroups/VAC/shield110217Memo.rtf|打ち合わせメモ 110217]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/LCGT_Cryo_110217.pdf|Cryostat Shields図 110217]]

.Cryostat Shield (3rd) 2011.2.10 KEK Cryogenics Centre R110 Polycom+EVO

 . ・ [[attachment:KAGRA/Subgroups/VAC/議事録110210.rtf|打ち合わせメモ110210]]
 . ・ [[attachment:KAGRA/Subgroups/VAC/LCGT_Cryo_110210.pdf|Cryostat Shield図 110210]]

.Cryostat 2010.11.18 EVO

 . ・ [[attachment:KAGRA/Subgroups/VAC/cryo20101119_2.pdf|打ち合わせ資料v2]]
 . ・[[attachment:KAGRA/Subgroups/VAC/SI_outgas20101104s.pdf|SI脱ガス中間報告]]
 . ・[[attachment:KAGRA/Subgroups/VAC/graphitesheets.pdf|グラファイトシート]]

冷凍機

  • リーダー: 春山富義 (KEK)
  • サブリーダー:内山隆 (ICRR)

Document

低温装置

  • リーダー: 鈴木敏一 (KEK)
  • サブリーダー:内山隆 (ICRR)
  • サブリーダー:木村誠宏 (KEK)
  • サブリーダー(Cryo-Payload):山元一広 (ICRR)

Document

Design drawings

Schedule about cryogenic payload

Meeting

Action Items list

KAGRA/Subgroups/CRY (last edited 2023-07-10 12:16:15 by miyoki)