Materials related to High-Gradient Cavity Package (Mainly WG5-Asia biweekly Meeting materials).

WG5-Asia biweekly meeting is merged with JLab-FNAL-KEK S0 WebEx weekly meeting.

Contributions to the 33rd Linear Acc. Meeting 2008 at Hiroshima, Japan (6th - 8th Aug. 2008).

  • “Series tests of high-gradient single-cell superconducting RF cavities” in Japanese by Furuta-san PDF file.
  • “Rinsing tests of single-cell SCRF cavities with endgroup” in Japanese by Furuta-san PDF file.
  • “Field flatness study on 9-cell superconducting RF cavity” in Japanese by Furuta-san PDF file.

 

Contributions to the proceedings of EPAC 2008 at Genoa, Italy (23rd - 27th June 2008).

  • “The first measurement of low-loss 9-cell cavity in a cryomodule at STF” by Saeki-san PDF file.

 

Presentations in SCRF meeting at FNAL (21st-25th April 2008).

  • Very preliminary results of ICHIRO 9-cell cavity test in cryomodule at STF 0.5 by Saeki-san PDF file.
  • Current status of high-gradient cavity study at KEK by Furuta-san PDF file.

 

Presentation in STF regular meeting on 4th April 2008.

  • Very preliminary results of 45 MV/m cavity test at STF 0.5 by Saeki-san PDF file.

 

75th WG5-Asia meeting on 15th February 2008.

  • Current Status Report by Saito-san PDF file.
  • Pre-tuning of ICHIRO 9-cell cavities by Saito-san PDF file.
  • Status of HOM study by Xing-san PDF file.
  • Status of Chinese large-grain single-cell cavities by Zong-san PDF file.
  • Status of dressed ICHIRO 9-cell cavity #1 at STF by Saeki-san PDF file.

 

74th WG5-Asia meeting on 2nd February 2008.

  • Introduction by Xing-san PDF file.
  • Status of Chinese large-grain single-cell cavities by Zong-san PDF file.
  • Status of new ICHIRO 9-cell cavity #7 and #8 by Saito-san PDF file.
  • STF0.5 Schedule EXCEL file.

 

73rd WG5-Asia meeting on 18th January 2008.

  • Status of dressed ICHIRO 9-cell cavity #1 at STF by Saeki-san PDF file.

 

72nd WG5-Asia meeting on 28th December 2007.

  • Status of single-cell cavities and field-flatness study with 9-cell cavity by Furuta-san PDF file.
  • Status of new ICHIRO 9-cell cavity fabrication by Saito-san PDF file.
  • Status of dressed ICHIRO 9-cell cavity #1 at STF by Saeki-san PDF file.
  • Table of Lorentz force detuning study by Morozumi-san EXCEL file.

 

71th WG5-Asia meeting on 14th December 2007.

  • Status of the new ICHIRO 9-cell cavity #5 at Jlab by Furuta-san PDF file.
  • Status of single-cell cavity by Furuta-san PDF file.
  • Status of new ICHIRO 9-cell cavity end-group fabrication by Saito-san PDF file.
  • Status of dressed ICHIRO 9-cell cavity #1 at STF by Saeki-san PDF file.
  • Schedule of cryomodule assembly by HITACHI at STF by Tsuchiya-san EXCEL file. (in Japanese)
  • Status of new ICHIRO 9-cell cavity #6 by Saeki-san PDF file.

 

70th WG5-Asia meeting on 30th November 2007.

  • Status of Tokyo-Univ single-cell cavity by Hano-san and Morita-san PDF file.
  • Status of dressed ICHIRO 9-cell cavity #1 at STF by Saeki-san PDF file.

 

Seminar at KEK, 22 November 2007

Electropolishing Modelling COMSOL software by Melanie Bruchon  from CEA Saclay SACM.

 

69th WG5-Asia meeting on 9th November 2007.

  • Status of single-cell cavity by Furuta-san PDF file.
  • HPR of dressed ICHIRO 9-cell cavity by Saeki-san PDF file.
  • Schedule of dressed ICHIRO 9-cell cavity by Saeki-san EXCEL file.

 

Summary of ICHIRO 9-cell cavity Leak Hunting (31 Oct. 2007) by Saeki-san.

Summary sheets for Cavity and T-pip. (Excel file).

 

68th WG5-Asia meeting on 26th October 2007.

  • Status of single-cell cavity by Furuta-san PDF file.
  • Dissolution of Aluminum with NaOH by Morita-san PDF file.
  • Leak hunting of ICHIRO cavity by Saeki-san PDF file.

 

SRF 2007 at Beijing, 14th – 19th October 2007.

  • Oral session: Gradient Yield Improvement Efforts for single and multi-cell cavities and Progress for very high gradient cavities by Saito-san PDF file.
  • Poster session: High Reliable Surface Treatment Recipe of High Gradient Single-cell STF Cavities at KEK by  Furuta-san PDF file.
  • Poster session: The first processing of capacitive-coupling coupler at room temperature in a cryomodule at STF by Saeki-san PDF file. Contribution to the proceedings PDF file, PS file

67th WG5-Asia meeting on 12th October 2007.

  • Status of single-cell cavity by Furuta-san PDF file.
  • Water-rinsing machine after cavity tumbling (barrel polishing) by Sato-san PDF file.
  • Leak hunting of ICHIRO cavity by Saeki-san PDF file.

 

66th WG5-Asia meeting on 28th September 2007.

  • Status of single-cell cavity by Furuta-san PDF file.
  • Status of single-cell (end-group) cavity by Hong-san PDF file.
  • Pilot study of degreasing with single-cell cavities by Furuta-san PDF file.
  • Leak hunting of ICHIRO cavity by Saeki-san PDF file.

 

Review of SRF Structures by Morozumi-san on 25 Sept. 2007.

 Review of SRF Structures (PDF file) by Morozumi-san.

 

65th WG5-Asia meeting on 14th September 2007.

  • Status of single-cell cavity by Furuta-san PDF file.
  • Status of single-cell (end-group) cavity by Hong-san PDF file.
  • Dismantling of ICHIRO cavity from Cryomodule at STF by T. Saeki-san PDF file.
  • Leak hunting of ICHIRO cavity by Saeki-san PDF file.

64th WG5-Asia meeting on 31st August 2007.

  • Status of high-gradient cavity package by Saito-san PDF file.
  • Status of single-cell cavity by Furuta-san PDF file.
  • Status of single-cell (end-group) cavity by Hong-san PDF file.
  • Coupler processing at Room Temperature in Cryomodule at STF by T. Saeki-san PDF file.
  • Status of pure-water at AR-East experimental hall by Sato-san PDF file.

 

Summer Challenge 2007 at KEK.

Yong and enthusiastic six students studied about Supper-conducting phenomena of Nb material.

Here is their presentation (in Japanese). Measurements of RRR and Hc of Nb material.

Lecture note : Part 1,  Part 2, Part 3.

63rd WG5-Asia meeting on 3rd August 2007.

  • Status of single-cell cavities by Furuta-san PDF file.
  • Status of single-cell (end-group) cavity by Hong-san PDF file.
  • Energy Loss & Q in Single-cell cavity at Antenna by Hwang-san PDF file.
  • Coupler processing at Room Temperature in Cryomodule at STF by T. Saeki-san PDF file.

 

32rd Conference of Particle Accelerator Society of Japan, 02 Aug. 2007.

Yuichi MORITA from Tokyo University presented his study for the Ball-screw Tuner (in Japanese).

 Study for Ball-screw Tuner for ILC ICHIRO 9-cell cavity.

 

62nd WG5-Asia meeting on 20th July 2007.

  • Status of single-cell cavities by Furuta-san PDF file.
  • Energy Loss & Q in Single-cell cavity at Antenna or Flange-gap by Hwang-san PDF file.
  • Coupler processing at Room Temperature in Cryomodule at STF by T. Saeki-san PDF file.
  • Bulge-Forming technology by Inoue-san PDF file.

 

PAC 2007, 25 - 29 June 2007, Albuquerque, New Mexico, U.S.A.

Contributions from WG5-Asia.

61st WG5-Asia meeting on 29th June 2007.

  • Contamination problem in HPR and sealing test for HIP bonding by Saito-san PDF file.
  • Status of single-cell cavities by Furuta-san PDF file.
  • Status of single-cell (end-group) cavity by Hong-san PDF file.
  • Liquid He temperature measurement by RuO2 register by T. Okamura-san PDF file.
  • Work report by Sato-san PDF file.
  • Status of STF by Saeki-san PDF file.
  • Hardness measurement of HIP end-group by Higashi-san PDF file.
  • Stress measurement of HIP end-group by X-ray by Saito-san, Higashi-san, Saeki-san PDF file.
  • Status of Nb/Cu seamless cavity by Ueno-san PDF file.

60th WG5-Asia meeting on 15th June 2007.

  • End-group fabrication and HPR pump contamination by Saito-san PDF file.
  • Status of single-cell cavities by Furuta-san PDF file.
  • Status of single-cell (end-group) cavity by Hong-san PDF file.
  • Status of STF by Saeki-san PDF file.
  • Consideration about He Jacket technology by Saeki-san PDF file.

 

Seminar at KEK, 12 June 2007

Superconducting RF activities at ACCEL Instruments GmbH by M. Pekeler-san and S. Bauer-san from ACCEL.

 

ILC seminar at KEK, 06 June 2007

High Gradient Cavity Package Activity at KEK by Saeki-san

 

The SRF Materials Workshop at FNAL, May 23-24

http://tdserver1.fnal.gov/project/workshops/rf_materials/

59th WG5-Asia meeting on 18th May 2007.

  • Introduction by Morita-san PDF file.
  • Introduction by Wang-san PDF file.
  • Status of single-cell cavities by Furuta-san PDF file.
  • RF Structure study by Morozumi-san PDF file.
  • High-power test of the input-couplers by Morita-san PDF file.
  • Study of wet cleaning by Higashi-san PDF file.
  • RF control of STF 0.5 by Saeki-san PDF file.

58th WG5-Asia meeting on 27th April 2007.

  • Status of single-cell cavities by Furuta-san PDF file.
  • Status of enlarged BP single-cell cavities by Hong-san PDF file.
  • Al contamination of furnace at Mechanical Workshop by Inoue-san PDF file.
  • High-power test of the input-couplers (part 1) by Saeki-san PDF file.
  • High-power test of the input-couplers (part 2) by Morita-san PDF file.
  • Status of new 9-cell ICHIRO cavity #6 (PAL) by Saeki-san PDF file.

57th WG5-Asia meeting on 12th April 2007.

  • JFY2007 plan by Saito-san PDF file.
  • Status of single-cell cavities by Furuta-san PDF file.
  • Status of enlarged BP single-cell cavities by Hong-san PDF file.
  • Status of new 9-cell ICHIRO cavities (part 1) by Furuta-san PDF file.
  • Status of new 9-cell ICHIRO cavities (part 2) by Hong-san PDF file.
  • Status of new 9-cell ICHIRO cavities (part 3) by Saeki-san PDF file.

56th WG5-Asia meeting on 29th March 2007.

  • JFY2007 plan by Saito-san (under preparation).
  • Status of single-cell cavities by Furuta-san PDF file.
  • Status of enlarged BP single-cell cavities by Hong-san PDF file.
  • Status of new 9-cell ICHIRO cavities by Saeki-san PDF file.
  • Status of high-power test-stand of input-couplers by Saeki-san PDF file.

55th WG5-Asia meeting on 16th March 2007.

54th WG5-Asia meeting on 1st March 2007.

  • China Low Beta Cavity Status at KEK by Ge-san PDF file.
  • Status of single-cell cavities by Furuta-san PDF file.
  • Status of enlarged BP single-cell cavities by Hong-san PDF file.
  • Status of 9-cell cavity (I9#0, I9#2 Re-EBW end-group) by Saeki-san PDF file.
  • Status of new 9-cell ICHIRO cavity fabrication by Saeki-san PDF file.
  • Tuner study by Higashi-san PDF file.

53rd WG5-Asia meeting on 16th February 2007.

  • Introduction by Zhao-san PDF file.
  • China Low Beta Cavity Measurements at KEK by Ge-san PDF file.
  • Status of single-cell cavity by Furuta-san PDF file.
  • Status of 9-cell cavity (I9#0, I9#2 Re-EBW end-group) by Saeki-san PDF file.
  • Status of new 9-cell ICHIRO cavity fabrication by Saeki-san PDF file.
  • RF Structure study (New ICHIRO 9-cell cavity design) by Morozumi-san PDF file.

ILC GDE meeting at IHEP, Beijing, 04 - 09 February 2007.

  • S0 status for the single-cell tests by Saeki-san PDF file.
  • Status of ICHIRO 9-cell cavity R&D by Saito-san PDF file.
  • Activities of IHEP on SC RF cavity for ILC by Zong-san PDF file.
  • R&D of China Test Cryomodule for ILC by IHEP&TIPC collaboration group PDF file.
  • Progress of SRF and ERL at Peking University by Lu Xiangyang-san PDF file.
  • Presentation by Proch-san PDF file.
  • High Gradient Module Test by Lutz-san PDF file.
  • Cryomodule Design and R&D during the EDR phase by Kephart-san PDF file.
  • Fermilab 3rd Harmonic Cryomodule Status by Solyak-san PDF file.
  • Some pictures of GDE meeting PDF file.

52nd WG5-Asia meeting on 22nd January 2007.

  • Status of Cavity by Saito-san PDF file.
  • Simulation of thermal shrinkage at the HIP junction of end-plate by Yamaoka-san PDF file.
  • RF Structure study (New ICHIRO 9-cell cavity design) by Morozumi-san PDF file.
  • Nb/Cu seamless cavity by Ueno-san PDF file.
  • Nb/Cu seamless cavity – Cross-section photo of iris of seamless cavity – by Watanabe-san PDF file.
  • Status of 9-cell cavity #1 (STF installation) by Saeki-san PDF file.
  • Status of single-cell cavity by Furuta-san PDF file.
  • End-single-cell cavity with enlarged BP by Hong-san PDF file.

Status of ILC activity at PAL (Korea) by Sohn-san on 26th December 2006. PDF file1, PDF file2, PDF file3

51st WG5-Asia meeting on 15th December 2006.

  • Status of 9-cell cavity #1 (STF installation) by Saeki-san PDF file.
  • Assembly operation of 9-cell cavity #1 in STF clean-room by Zhai-san PDF file.
  • Status of input-coupler support by Sato-san PDF file.
  • Status of single-cell cavity by Furuta-san PDF file.
  • Single-cell cavity with enlarged beam-pipe by Hong-san PDF file.
  • Single-cell cavities with China large-grain material by Zong-san PDF file.
  • Single-cell cavity with CBMM large-grain material by Shim-san PPT file.
  • RF Structure study (New ICHIRO 9-cell cavity design) by Morozumi-san PDF file.
  • Simulation of thermal shrinkage at the HIP junction of end-plate by Yamaoka-san PDF file.
  • Status of tuner study by Higashi-san PDF file.

50th WG5-Asia meeting on 1st December 2006.

  • WG5 cavity status by Saito-san PDF file.
  • Status of 9-cell cavity #1 (STF installation) by Saeki-san PDF file.
  • Status of single-cell cavity by Furuta-san PDF file.
  • HPR nozzle study by Hong-san PDF file.
  • Single-cell cavities with China large-grain material by Zong-san PDF file.
  • Single-cell cavity with CBMM large-grain material by Shim-san PPT file.
  • New coupler study by Zhai-san PDF file.
  • Cavity fabrication by Inoue-san PDF file.

49th WG5-Asia meeting on 17 November 2006.

  • Report on Single-Crystal Nb Workshop on 02 November 2006 (in English) by Saito-san PDF file.
  • Introduction by Zhai Jiyuan san PDF file.
  • Status of single-cell and 9-cell cavities by Saeki-san PDF file.
  • Photos of Cracks on end-cells of 9-cell #0 by Sato-san PDF file.
  • Tuner development by Higashi-san PDF file.
  • Status of single-cell cavities by Furuta-san PDF file.
  • Single-cell cavities with China large-grain material by Zong-san PDF file.
  • Single-cell cavity with CBMM large-grain material by Shim-san PPT file.
  • RF structure by Morozumi-san PDF file.
  • Cavity fabrication by Inoue-san PDF file.

Report on Single-Crystal Nb Workshop on 02 November 2006.

  • Report on Single-Crystal Nb Workshop by Saito-san (in Japanese). PDF file (3MB).

Seminar by Dr. Paolo Michelato on 15 November 2006.

  • Activity at INFN Milano - LASA by Dr. Paolo Michelato PDF file (8MB).

Cryostat meeting with Hitachi on 6 November 2006.

  • Status of 45 MV/m cavity for STF installation by Saeki-san PDF file.

48th WG5-Asia meeting on 2 November 2006.

  • Status and Schedule by Saeki-san PDF file.
  • Introduction by Zhai Jiyuan san TXT file.
  • Coupler status by Matsumoto-san PDF file.
  • Status of single-cell and 9-cell cavities by Furuta-san PDF file.
  • End-plate heat-expansion simulation by Sato-san PDF file.
  • End-plate heat-expansion and Tuner by Higashi-san PDF file.
  • End-single-cell cavity with enlarged BP by Hong-san PDF file.
  • Single-cell cavities with China large-grain material by Zong-san PDF file.
  • Presentation at Korean Physical Society by Shim-san PPT file.
  • RF structure by Morozumi-san PDF file.
  • New trimming shape for better EBW by Saeki-san PDF file.

47th WG5-Asia meeting on 20 October 2006.

  • Agenda & Cavity status by Saito-san PDF file.
  • Magnetic field measurements in vac. container and mag. shield by Masuzawa-san PDF file.
  • Magnetic field simulation of mag. shield by Ouchi-san PDF file.
  • String assembly jigs by Sato-san PDF file.
  • Nb/Cu seamless cavity by Ueno-san PDF file.
  • RF structure by Morozumi-san PDF file.
  • 9-cell cavity status by Saeki-san PDF file.
  • Leak history of 9-cell cavities and single-cell cavity status by Furuta-san PDF file.
  • Single-cell cavity with enlarged beam-pipe by Hong-san PDF file.
  • China Large-grain single-cell cavities by Zhong-san PDF file.
  • Wire-saw machine for cutting large-grain ingots by Yokokawa-san (NTC company) PDF file.
  • New Ichiro-cavity schedule by Higo-san EXCEL file.
  • Transient Lorentz Detuning by Higo-san PDF file.
  • Tuner evaluation by Higo-san and Higashi-san PDF file.

Magnetic-shield Meeting on 10 October 2006.

  • Magnetic field measurements by Masuzawa-san PDF file.
  • Magnetic shielding simulation by Ohuchi-san PDF file.

46th WG5-Asia meeting on 6 October 2006.

  • Brief Introduction by Zong-san PDF file.
  • Cavity schedule by Saito-san PDF file.
  • 9-cell cavity status by Saeki-san PDF file.
  • Single-cell cavity status by Furuta-san PDF file.
  • Large-grain single-cell cavity summary by Shim-san PDF file.
  • Single-cell cavity with enlarged beam-pipe by Hong-san PDF file.
  • Hole-shape of HPR nozzle by Higo-san PDF file.
  • Seamless cavity fabrication by Inoue-san PDF file.

45th WG5-Asia meeting on 8 September 2006.

  • HPR trouble and Cavity schedule by Saeki-san PDF file.
  • Cavity status by Furuta-san PDF file.
  • Inner surface (EBW seam) photo of single-cell cavities by Furuta-san PDF file.
  • Inner surface (EBW seam) photo of 9-cell cavities by Saeki-san PDF file.
  • Re-EBW of HOM antenna (ICHIRO 9-cell cavity #1 and #3) by Saeki-san PDF file.
  • Large-grain cavity fabrication by Shim-san PDF file.
  • Nb/Cu seamless cavity by Ueno-san PDF file.
  • Tuner Development by Higashi-san PDF file.
  • RF Structure by Morozumi-san PDF file.

44th WG5-Asia meeting on 25 August 2006.

  • Cavity Status by Furuta-san PDF file.
  • Nb/Cu clad cavity by Ueno-san PDF file.
  • End-group single-cell cavity study by Hong-san PDF file.
  • Large-grain cavity fabrication by Shim-san PDF file.
  • Gasket Development by Iwai-san PDF file.
  • Tuner Development by Higashi-san PDF file.
  • RF Structure by Morozumi-san PDF file.
  • Status of new coupler statnd by Sato-san PDF file.

43rd WG5-Asia meeting on 11 August 2006.

  • Cavity Status by Furuta-san PDF file.
  • Nb/Cu clad cavity by Ueno-san PDF file.
  • End-group single-cell cavity study by Hong-san PDF file.
  • Large-grain cavity fabrication by Shim-san PDF file.
  • Large-grain cavity fabrication by Xu-san PDF file.
  • Cavity Fabrication by Inoue-san PDF file.
  • Status of mock-up model by Sato-san PDF file.
  • Tuner by Higo-san PDF file.
  • Estimate of Eacc/Freq shift due to cooling by Higo-san PDF file.
  • HOM tuning ICHIRO#3 by Higo-san PDF file.
  • Schedule by Higo-san Excel file.

Presentations at 3rd Annual Conference of Particle Accelerator Society of Japan (Sendai, 2-4, August 2006).

TV meeting among KEK, DESY and Jlab on 28 July 2006.

  • Single-cell  cavities with enlarged beam-pipe by Hong-san PDF file.

Presentations at Vancouver GDE meeting on 19 – 22 July 2006.

  • R&D Status / Main Linac Cavities by Saito-san PDF file.

Input Coupler High-power Test summary on 18 July 2006.

  • Input-coupler High-power Test Summary by Higo-san PDF file.

42nd WG5-Asia meeting on 14 July 2006.

  • Cavity Status by Saeki-san PDF file.
  • Cavity details by Furuta-san PDF file.
  • End-group single-cell cavity study by Hong-san PDF file.
  • Input-coupler high-power test by Higo-san PDF file.
  • HOM coupler study by Higo-san PDF file.
  • Tuner by Higashi-san PDF file.
  • Tuner characteristics study by Higo-san PDF file.
  • RF Structure by Morozumi-san PDF file.
  • Nb/Cu Seamless Cavity by Ueno-san PDF file.
  • Cavity fabrication by Inoue-san PDF file.

Lecture at Tokyo University on 10 - 12 July 2006.

  • “High Gradient SRF cavity and ILC project” (in Japanese) by K. Saito.  No.1 No.2 No.3 No.4.

41st WG5-Asia meeting on 30 June 2006.

  • Agenda PDF file.
  • Cavity status by Furuta-san PDF file.
  • End-group single-cell cavity study by Hong-san PDF file.
  • Input-coupler high-power test by Kazakov-san PDF file.
  • New high-power test stand for coupler by Satoh-san PDF file.
  • Input-coupler high-power test by Matsumoto-san PDF file.
  • Zero Impedance Vacuum Flange by Matsumoto-san PDF file.
  • MO Flange Test by Iwai-san PDF file.
  • Nb/Cu Seamless Cavity by Ueno-san PDF file.
  • Tuner status by Higashi-san PDF file
  • RF Structure by Morozumi-san PDF file.
  • HOM study by Higo-san PDF file.
  • Powder on antenna of INFN cavity by Bessho-san PDF file.
  • Portable positoron accelerator with SRF cavity by Ohshima-san PDF file.

Presentations at EPAC06 (26-30, June 2006).

40th WG5-Asia meeting on 9 June 2006.

  • Status of Cavity by Saito-san PDF file.
  • Input-coupler high-power test by Higo-san PDF file,
  • Input-coupler low-power test by Kazakov-san PDF file, PDF file, PDF file.
  • Nb/Cu Seamless Cavity by Ueno-san PDF file.
  • Nb/Cu Seamless Cavity / Cu model Cavity by Inoue-san PDF file.
  • RF Structure by Morozumi-san PDF file.
  • 9-cell Cavity Status (part1) by Saeki-san PDF file.
  • 9-cell Cavity Status (part2) by Furuta-san PDF file.
  • End-group single-cell cavity study by Hong-san PDF file.
  • Tuner status by Higashi-san PDF file
  • Stiffener ring study by Yamaoka-san PDF file.
  • Stiffener ring study by Higo-san PDF file.
  • RF Simulator by Yamamoto-san PDF file.

39th WG5-Asia meeting on 26 May 2006.

  • ILC Related R&D activities at JLab by Prof. Peter Kneisel PDF file.
  • Status of Cavity by Saito-san PDF file.
  • Input-coupler high-power test by Matsumoto-san PDF file,
  • Nb/Cu Seamless Cavity by Ueno-san PDF file.
  • Nb/Cu Seamless Cavity / Cu model Cavity / HOM dimension by Inoue-san PDF file.
  • R&D for sealing/gasket by Iwai-san PDF file.
  • RF Structure by Morozumi-san PDF file.
  • HOM coupler study by Higo-san PDF file.
  • Schedule by Higo-san PDF file

WG5-Asia coupler high-power test meeting on 16 May 2006.

  • Coupler High-Power Test Plan by Saeki-san PDF file.

38th WG5-Asia meeting on 8 May 2006.

  • Status of Cavity by Saito-san PDF file.
  • Nb/Cu Seamless Cavity by Ueno-san PDF file.
  • RF Structure by Morozumi-san PDF file.
  • Coupler high-power test by Saeki-san PDF file.
  • Single-cell cavity status by Furuta-san PDF file.
  • 9-cell cavity status by Saeki-san PDF file.
  • MP study at SLAC by Higo-san PDF file.
  • Input-coupler coupling by Higo-san PDF file,
  • Rejection property of HOM by Higo-san PDF file.
  • Frequency measurement of ICHIRO #3 by Higo-san  PDF file
  • Schedule by Higo-san PDF file

Lecture at Tokyo University on 24 April 2006.

  • “ILC and SRF technology” (in Japanese) by K. Saito.  PDF file.

KEK Machining-Center Mechanical Workshop on 21 April 2006.

  • “High-Gradient Cavity Package” (in Japanese) by F. Furuta.  PDF file.

37th WG5-Asia meeting on 20 April 2006.

Status of RE Cavities from Cornell Univ. as of 10 April 2006.  PDF file ppt file.

36th WG5-Asia meeting on 07 April 2006.

  • Status of Cavity by Saito-san PDF file.
  • Nb/Cu Seamless Cavity by Ueno-san PDF file.
  • Tuner by Higashi-san PDF file.
  • ICHIRO 9-cell cavity mechanical structure by Yamaoka-san PDF file.
  • Single-cell cavity status by Furuta-san PDF file.
  • 9-cell cavity status by Saeki-san PDF file.
  • HOM by Higo-san PDF file.
  • Reducing Lorentz Detuning by Higo-san PDF file.
  • Schedule by Higo-san Excel file.

The Physical Society of Japan 61st Annual Meeting (27 – 30 Mar 2006) .

 Superconducting RF Cavity R&D for ILC by K.Saito (PDF file).

LCPAC 2006 on 25 March 2006.

 LCPAC2006 web page or ILC (KEK) web page

35th WG5-Asia meeting on 24 March 2006.

  • Status of Cavity by Saito-san PDF file.
  • High-power test of coupler by Matsumoto-san PDF file PDF file PDF file PDF file PDF file.
  • Nb/Cu Seamless Cavity by Ueno-san PDF file.
  • R&D of Cu Electroforming Method to make Seamless Nb/Cu Clad Pipes for SRF Cavities by T. Higuchi (Nomura Plating) PDF file.
  • Vertical measurement of INFN 9-cell seamless (spinning) cavity by Lanza-san PDF file.
  • Single-cell / 9-cell cavity status by Furuta-san and Orr-san PDF file.
  • Statistical analysis for single-cell vertical tests by Orr-san PDF file.
  • LCPAC presentation by Saeki-san PDF file.

34th WG5-Asia meeting on 10 March 2006.

  • Talk: “Sputtered Nb onto Cu: Past and future configuration at LNL-INFN” by Giulia Lanza PDF file.
  • Status of Cavity by Saeki-san PDF file.
  • RF Structure by Morozumi-san PDF file.
  • High-power test of coupler by Matsumoto-san PDF file PDF file.
  • Single-cell Cavity Measurements by Orr-san and Furuta-san PDF file.
  • Results of Multipacting Simulations for ICHIRO Two-Cell Inner End Cap/Cup Geometry by M. Meidlinger  PDF file

33rd WG5-Asia meeting on 24 February 2006.

  • Status of WG5-Asia by Saito-san PDF file.
  • Tuner by Higashi-san PDF file.
  • Nb/Cu Seamless Cavity by Ueno-san PDF file.
  • DESY trip report by Inoue-san PDF file.
  • HOM report by Ge-san PDF file.
  • New Vertical Test Control System by Saeki-san PDF file.
  • ICHIRO 9-cell cavity status by Furuta-san PDF file.
  • Single-cell Cavity Measurements by Orr-san PDF file.
  • EP acid control by Taguchi-san PDF file
  • New RE cavity status from Cornell by Saeki-san PDF file

32nd WG5-Asia meeting on 10 February 2006.

  • Status of WG5-Asia by Saito-san PDF file.
  • RF Structure by Morozumi-san and Ge-san PDF file.
  • Tuner by Higo-san PDF file.
  • Tuner by Higashi-san PDF file.
  • Coupler by Matsumoto-san PDF file.
  • Proposals for ILC by Kim-san PDF file.
  • Nb/Cu seamless cavity development by Fujiyoshi-san PDF file.
  • ICHIRO 9-cell cavity status by Furuta-san PDF file.
  • EP acid control by Saeki-san PDF file

31st WG5-Asia meeting on 27 January 2006.

  • Status of WG5-Asia by Saito-san PDF file.
  • RF Structure by Morozumi-san and Ge-san PDF file.
  • Tuner by Higashi-san PDF file.
  • Some Ideas on R&D lines to Pursue by Orr-san PDF file.
  • Cavity Fabrication by Inoue-san PDF file.
  • Leak Test of Al Gasket coated by In by Furuta-san PDF file.

Seminar by Dr. D. Proch and Dr. W. Singer on 27 January 2006.

  • Status of XFEL, Connection XFEL – ILC – TTC by Dr. D. Proch  PDF file.
  • Advanced Fabrication Methods of Superconducting RF Cavities by Dr. W. Singer  PDF file.

30th WG5-Asia meeting on 13 January 2006.

  • Status of Cavity by Saito-san PDF file.
  • Nb/Cu Clad Cavity by Ueno-san PDF file.
  • My Activity at IHEP by Ge Mingqi PDF file.
  • Status of Cavity Fabrication by Inoue-san PDF file.
  • Leak Test of Al Gasket coated by In by Furuta-san PDF file.
  • EP acid control study by Saeki-san PDF file.
  • Multipacting Simulations for ICHIRO Regular Cell Geometry by M. Meidlinger PDF file.

29th WG5-Asia meeting on 16 December 2005.

  • Status of Cavity by Saito-san PDF file.
  • WG5 H18 budget plan Excel file.
  • 9-cell Cavity History and Plan Excel file.
  • Tuner and Pre-tuning by Higashi-san PDF file.
  • Mechanical Structure Study of 9-cell Cavity by Yamaoka-san PDF file.
  • Mechanical Resonance Study for 9-cell Cavity by Higo-san PDF file.
  • Nb/Cu Clad Cavity by Ueno-san PDF file.
  • Cavity Fabrication Status by Inoue-san PDF file.
  • RF Structure XIV by Morozumi-san PDF file.
  • Coupler High-Power Test Stand by Matsumoto-san PDF file.
  • Leak Test of Al Gasket coated by In by Furuta-san PDF file.
  • Single-cell Cavity Study PDF file.
  • EP acid parameter control by Saeki-san PDF file
  • EP calendar Excel file

28th WG5-Asia meeting on 2 December 2005.

Seminar by Dr. Lutz Lilje on 01 December 2005.

  • Superconducting RF Status at DESY  PDF file.

Seminar by Dr. Ganapati Rao Myneni on 22 November 2005.

  • Single Crystal, Large Grain High RRR Niobium  PDF file.

27th WG5-Asia meeting on 18 November 2005.

  • Status of cavity by Saito-san PDF file.
  • Status of Tuner Development by Higashi-san PDF file.
  • Nb/Cu Clad cavity by Ueno-san PDF file.
  • RF Structure XII by Morozumi-san PDF file.
  • Fast Ferroelectric Tuner for L-band by Kazakov-san PDF file.
  • Warm window of coupler by Matsunmoto-san PDF file.
  • Flange for Nb/Cu Clad Cavity by Matsumoto-san PDF file.
  • MO flange by Matsumoto-san PDF file.
  • MO flange He leak test by Furuta-san PDF file.
  • Cavity Fabrication Status by Inoue-san PDF file.
  • Frequency Tuning using Mechanical Resonance by Higo-san PDF file.
  • Schedule by Higo-san Excel file.
  • Single-cell cavity program by Higo-san Excel file.
  • EP calendar by Higo-san Excel file.

26th WG5-Asia meeting on 4 November 2005.

  • Status of cavity by Saito-san PDF file.
  • RF structure by Morozumi-san PDF file.
  • Nb/Cu clad cavity fabrication (machine) by Ueno-san PDF file.
  • Cavity Fabrication Status by Inoue-san PDF file.
  • Tuner by Higashi-san PDF file
  • Deformation of LL-No2 and Repair with Stiffener by Yamaoka-san PDF file.
  • High-power cable by KEYCOM by Higo-san PDF file.

25th WG5-Asia meeting on 21 October 2005.

  • Status of cavity by Saito-san PDF file.
  • RF structure by Morozumi-san PDF file.
  • Nb/Cu clad cavity fabrication (Machine) by Ueno-san PDF file.
  • Coupler status by Matsumoto-san PDF file.
  • SMTF meeting report by Saeki-san PDF file.
  • Vertical tests of single-cell cavities by Furuta-san PDF file
  • Freq. shift due to mechanical resonant mode by Higo-san PDF file
  • Inner surface shape of DESY 2-cell seamless cavity by Higo-san PDF file
  • Schedule by Higo-san Excel file

24th WG5-Asia meeting on 29 September 2005.

  • Status of cavity by Saito-san PDF file.
  • RF structure by Morozumi-san PDF file.
  • Nb/Cu clad cavity fabrication (Machine) by Ueno-san PDF file.
  • Nb/Cu clad cavity fabrication (Simulation) by Enami-san PDF file.
  • Vertical tests of single-cell cavities by Furuta-san PDF file.
  • EP quality control / LL2 material purification by Saeki-san PDF file.
  • 9-cell Cu cavity fabrication by Inoue-san PDF file.
  • Status of coupler by Matsumoto-san PDF file.
  • Status of tuner by Yamaoka-san PDF file.
  • Status of Baseline cavity fabrication by Noguchi-san PDF file.

23rd WG5-Asia meeting on 15 September 2005.

  • Status of cavity by Saito-san PDF file.
  • Single-cavity high-gradient measurements by Furuta-san PDF file.
  • EP/HPR/Clean-room Quality Control by Saeki-san PDF file.
  • Cavity EBW inner-surface shape evolution by Higo-san PDF file.
  • High-power Cable for Vertical Test by Higo-san PDF file.

22nd WG5-Asia meeting on 02 September 2005.

  • Status of cavity by Saito-san PDF file.
  • Proposed Schedule by Higo-san PDF file.
  • Two-week schedule by Saeki Excel file.
  • Nb/Cu clad cavity by Ueno-san PDF file.
  • RF structure by Morozumi-san PDF file.
  • 45 MV/m cavity assembly flow proposal by Higo-san PDF file.
  • STF clean-room status by Higo-san PDF file.
  • Cavity inner-surface shape measurement by Higo-san  PDF file.
  • Tolerable VT-cable Leak-rate by Higo-san PDF file.

21st WG5-Asia meeting on 08 August 2005.

  • Status of cavity by Saito-san PDF file.
  • Mechanical structure measurements and seamless cavity simulation by Yamaoka-san PDF file.

Seminar by Prof. A. A. Polyanskii (University of Wisconsin) on 29 July 2005.

  • Magneto-Optical Imaging Technique of Magnetic Flux in Superconductors by Prof. A. A. Polyanskii  PDF file.

20th WG5-Asia meeting on 25 July 2005.

  • Status of cavity by Saito-san PDF file.
  • ILC 2nd review presentation by Saito-san PDF file.
  • Status of RF structure simulation by Morozumi-san PDF file.
  • Status of tuner R&D by Higashi-san PDF file.
  • Status of  Nb/Cu seamless cavity and EP facility by Ueno-san PDF file.
  • ILC 45MV/m coupler presentation at Saga by Matsumoto-san PDF file.
  • Coupler window by Kazakov-san PDF file.
  • Magnetic field enhancement by Higo-san PDF file.

WG5-Asia presentations at SRF2005 (Cornell University, 10th - 15th Jul 2005).

  • High gradient cavity R&D status in KEK for ILC by Saito-san PDF file.
  • Feasibility study of ~50MV/m by single-cell cavity by Sohn-san PDF file.
  • Different material bonding by HIP technology and the reliability by Furuta-san PDF file.
  • Mechanical structure analysis for ICHIRO 9-cell cavity by Yamaoka-san PDF file.
  • Design and analysis of 45 MV/m superconducting structures by Morozumi-san PDF file.
  • Fabrication of four 9-cell ICHIRO high-gradient cavities for the R&D of ILC accelerator in KEK by Saeki-san PDF file.

19th WG5-Asia meeting on 1 July 2005.

  • High gradient cavity R&D status by Saito-san PDF file.
  • Mechanical structure analysis for ICHIRO 9-cell cavity by Yamaoka-san PDF file.
  • Pre-tuning and tuner by Higashi-san PDF file.
  • Coupler status by Matsumoto-san PDF file.
  • Nb/Clad cavity and EP facility status by Ueno-san PDF file.
  • Necking test by Enami-san PDF file.
  • Magnetic field enhancement due to EBW by Higo-san PDF file.
  • Copper Cavity HOM by Higo-san PDF file.
  • Power combine test for 9-cell cavity vertical test by Higo-san PDF file.

18th WG5-Asia meeting on 17 June 2005.

  • Status of cavity by Saito-san PDF file.
  • Status of HOM by Morozumi-san PDF file.
  • Status of tuner R&D by Higashi-san PDF file.
  • Status of Nb/Cu seamless cavity and EP facility by Ueno-san PDF file.
  • 45 MV/m coupler by Matsumoto-san PDF file.
  • Coupler ohmic loss by Kazakov-san PDF file.
  • Status of single-cell cavities by Sohn-san PDF file.
  • Status of  pure water system by Furuta-san PDF file.
  • Status of ICHIRO 9-cell cavity fabrication by Saeki-san PDF file.
  • 3D measurement of 2nd 9-cell ICHIRO cavity by Inoue-san PDF file.
  • Amplifier performance by Higo-san PDF file.
  • Nb/Cu clad seamless cavity by Enami-san PDF file.
  • Cavity parameters EXCEL file.

17th WG5-Asia meeting on 03 June 2005.

  • Status of cavity by Saito-san PDF file.
  • Status of tuner R&D by Higashi-san PDF file.
  • Status of HOM by Morozumi-san PDF file.
  • Status of Nb/Cu seamless cavity and EP facility by Ueno-san PDF file.
  • Status of coupler by Matsumoto-san PDF file.
  • Cavity mechanical structure by Yamaoka-san PDF file.
  • Status of single-cell cavities by Sohn-san PDF file.
  • Status of 1st ICHIRO 9-cell cavity, EP & vertical measurement by Furuta-san PDF file.
  • Status of ICHIRO 9-cell cavity fabrication by Saeki-san PDF file.
  • Cu Cavity by Higo-san PDF file.
  • Nb/Cu clad seamless cavity by Enami-san PDF file.
  • Cavity parameters EXCEL file.

16th WG5-Asia meeting on 20 May 2005.

15th WG5-Asia meeting on 06 May 2005.

  • Status of cavity by Saito-san PDF file.
  • Status of tuner R&D by Higashi-san PDF file.
  • Status of HOM by Morozumi-san PDF file.
  • Status of coupler by Matsumoto-san PDF file.
  • Status of ICHIRO 9-cell cavity by Saeki-san PDF file.
  • HIP bonding leak-test by Furuta-san PDF file.
  • HOM study by Higo-san PDF file.

14th WG5-Asia meeting on 22 April 2005.

  • Status of ICHIRO single-cell cavity by Sohn-san PDF file.
  • Dimension data analysis of ICHIRO 9-cell cavity fabrication PDF file.
  • Status of ICHIRO 9-cell cavity by Saeki-san PDF file.
  • Coupler by Kazakov-san PDF file.
  • Tuner R&D status by Higashi-san PDF file.
  • Nb Cu clad cavity R&D by Enami-san PDF file.
  • Status of Mechanical Center by Ueno-san PDF file.

KEK Machining-Center Mechanical Workshop (WG5 presentation only) on 15 April 2005.

  • KEK Mechanical WS program PDF file.
  • Linear collider accelerator by Yokoya-san PDF file.
  • Super conductive cavity in ILC by Toge-san PDF file.
  • Mechanical structure of ICHIRO cavity by Yamaoka-san PDF file.
  • ILC Cryostat R&D by Tsuchiya-san PDF file.
  • Super conductive cavity lecture by Saito-san PDF file.
  • Fabrication of ICHIRO 9-call cavity 1 by Furuta-san PDF file.
  • Fabrication of ICHIRO 9-call cavity 2 by Saeki-san PDF file.
  • Nb Cu clad cavity R&D by Enami-san PDF file.

13th WG5-Asia meeting on 8 April 2005.

  • Status of ICHIRO single-cell cavity by Furuta-san PDF file.
  • Status of ICHIRO 9-cell cavity by Saeki-san PDF file.
  • ILC power cooling by Hosoyama-san PDF file.
  • Coupler schedule by Matsumoto-san PDF file.
  • Coupler by Kazakov-san PDF file.
  • Tuner R&D status by Higashi-san PDF file.
  • Nb Cu clad cavity R&D by Enami-san PDF file.
  • Schedule by Higo-san EXCEL file.

12th WG5-Asia meeting on 25 March 2005.

  • Overall schedule for 45 MV/m R&D and budget by Saito-san.
  • Status of ICHIRO single-cell cavity by Furuta-san PDF file.
  • Status of ICHIRO 9-cell cavity by Saeki-san PDF file.
  • HOM calculation by Morozumi-san PDF file.
  • Some ideas for RF distribution by Matsumoto-san PDF file.
  • SLAC/FNAL visit report by Higo-san PDF file.

11th WG5-Asia meeting on 11 March 2005.

  • Delegation to Italy by Tsuchiya-san PDF file.
  • Collaboration of KEK and PAL/POSTECH by Matsumoto-san PDF file.
  • ILC WG5 activity at PAL by Oho-san (PAL, Korea) PDF file.
  • Status of PAL XFEL project by Oho-san (PAL, Korea) PDF file.
  • Status of ICHIRO single-cell cavity by Furuta-san PDF file.
  • Status of ICHIRO 9-cell cavity by Saeki-san PDF file.
  • Status of beam-pipe fabrication and vacuum furnace by Inoue-san PDF file.
  • Tuner design by Higashi-san PDF file.
  • Input coupler design by Kazakov-san PDF file.
  • Status of Nb/Cu seamless cavity R&D by Enami-san PDF file.
  • Status of vacuum furnace by Ueno-san PDF file.
  • Vacuum furnace and KEK EP facility by Ueno-san PDF file.

10th WG5-Asia meeting on 2 Feb. 2005.

  • Nb+SUS pipe production by Furuta-san PDF file.
  • ICHIRO cavity status by Saeki-san PDF file.
  • Pre-tuning by Higashi-san PDF file.
  • Coupler by Kazakov-san+Matsumoto-san PDF file.
  • Presentation by Higo-san PDF file.
  • Field Analysis by Morozumi-san PDF file.
  • Lorentz Detuning Effect simulation by Yamaoka-san PDF file.
  • Cavity half-cup production by Inoue-san PDF file.
  • Nb/Cu seamless cavity by Enami-san PDF file.

9th WG5-Asia meeting on 19 Jan. 2005.

  • Cable correction method by Furuta-san PDF file.
  • ICHIRO cavity status by Saeki-san PDF file.
  • Pre-tuning by Higashi-san PDF file.
  • Coupler by Kazakov-san+Matsumoto-san PDF file.
  • Vac-Furnace by Funakoshi-san PDF file.
  • International status by Saito-san PDF file.

8th WG5-Asia meeting on 6 Jan. 2005.

  • Minutes of the 8th Asian WG5 meeting (under preparation)PDF file.
  • ICHIRO cavity status by Saeki-san PDF file.
  • Vertical measurement method of cavity by Furuta-san PDF file.
  • ANSYS analysis by Yamaoka-san PDF file.
  • Field uniformity vs. Freq. error by Higo-san PDF file.

7th WG5-Asia meeting on 17 Dec. 2004.

6th WG5-Asia meeting on 10 Nov. 2004.

  • Minutes of the 6th Asian WG5 meeting (under preparation)PDF file.
  • Rehearsal of KEK WG5 talks for ILC WS.

5th WG5-Asia meeting on 4 Nov. 2004.

  • Minutes of the 5th Asian WG5 meeting (under preparation) PDF file.
  • Draft of WG5 program for ILC WS in KEK PDF file.
  • Presentation by Wake PDF file.
  • Presentation by Higashi PDF file.
  • Presentation by Enami PDF file.
  • Presentation by H. Matsumoto in Japanese PDF file.
  • Presentation by Saeki PDF file.
  • Presentation by Saito PDF file.

4th WG5-Asia meeting on 28 Oct. 2004.

3rd WG5-Asia meeting on 21 Oct. 2004.

  • Minutes of the 3rd Asia WG5 meeting PDF file.

2nd WG5-Asia meeting on 12 Oct. 2004.

  • Minutes of the 2nd Asia WG5 meeting PDF file.

1st WG5-Asia meeting on 30 Sept. 2004.

  • Minutes of the 1st Asia WG5 meeting PDF file.
  • Trip report to SLAC, FNAL, ANL (K.Saito) PDF file.
  • High gradient cavity issues (K.Saito) PDF file.

Materials related to WG5

Sept.13, 2006

  • Proceedings of SRF 1st WS at Karlsruhe is available as PDF file. PDF file(33 MB).

Jan.29, 2005

  • Nb-material for 9-cell ICHIRO cavities is delivered from Tokyo Denkai Co.  JPEG file, JPEG file .

Nov.16, 2004

  • Re-entrant shape single cavity reached 46 MV/m (from Hassan) TXT file, PDF file .

Nov.11, 2004

  • Final draft of ILC WS program @ KEK PDF file.

Nov.10, 2004

  • SLAC ILC WS Oct2004, Revisiting Cold ILC parameters (H.Padamsee) PDF file.

Oct.27 - 29, 2004, Yoshioka U.S. report.

Oct.25, 2004

  • ILC WG5 preliminary program. PDF file.

Oct.14, 2004

 

 

Last modified: Sat., April 22, 2006