TTC Meeting at SLAC, December 1 - 4, 2015

1 Dec 2015, 08:00 → 4 Dec 2015, 13:00 US/Pacific

Building 51, Kavli, Auditoium (SLAC)

The mission of the TESLA Technology Collaboration is to advance SRF technology R&D and related accelerator studies across the broad diversity of scientific applications, and to keep open and provide a bridge for communication and sharing of ideas, developments, and testing across associated projects. To this end the Collaboration supports and encourages free and open exchange of scientific and technical knowledge, expertise, engineering designs, and equipment.
The TTC organizes regular collaboration meetings where new developments are reported, recent findings are discussed and technical issues are concluded.


https://conf-slac.stanford.edu/tesla-2015/content/welcome

Slides 20151201-Lesson_learned_at_cea_from_cryomodule_assembly.pptx

Tuesday 1 December

Introduction and Update from last Collaboration Meeting - Hasan Padamsee (Cornell)

Hasan Padamsee, Cornell

Convener: Hasan Padamsee (FNAL)

slides TTCIntro3.pptx

1 Introduction and Update from last Collaboration Meeting

Slides TTCIntro3.pptx

SLAC Welcome and Logistics, Marc Ross (SLAC)

slides ttcOpen_mcr201512.pptx

Plenary Talk 1: General Overview on Challenges in low-beta Cavities - G. Olry (IPNO)

slides TTC_SLAC2015_OLRY_Challenges_Low_Beta.pptx

2 Plenary Talk 1: General Overview on Challenges in low-beta Cavities - G. Olry (IPNO)

Slides TTC_SLAC2015_OLRY_Challenges_Low_Beta.pptx

Plenary Talk2: Technical Challenge of Cryomodule Design in LCLS-II - J. Kaluzny (FNAL)

slides Kaluzny_TTC_LCLS_II_Cryomodule_20151201.pptx

3 Plenary Talk2: Technical Challenge of Cryomodule Design in LCLS-II - J. Kaluzny

Slides Kaluzny_TTC_LCLS_II_Cryomodule_20151201.pptx

Plenary Talk 3: Technical Challenge of Cavity Mass Production in LCLS-II - F. Marhauser (JLAB)

slides Plenary_Talk_3_Technical_Challenge_of_Cavity_Mass_Production_in_LCLS-II_-_F._Marhauser_(JLAB).pdf

Coffee

Plenary Talk 4: Lesson Learned from Cryomodule Assembly with a Focus toward Future Projects - C. Madec (CEA)

slides 20151201-Lesson_learned_at_cea_from_cryomodule_assembly.pptx

4 Plenary Talk 4: Lesson Learned from Cryomodule Assembly with a Focus toward Future Projects

Slides 20151201-Lesson_learned_at_cea_from_cryomodule_assembly.pptx

Plenary Talk 5: “Cryogenic Operation, Failures and Recovery for Future 2K Accelerators - S. Putselyk (DESY)

slides 2015-12-01_Cryogenic_operation,_Failures_and_Recovery_for_Future_2K_accelerators.ppt

5 Plenary Talk 5: “Cryogenic Operation, Failures and Recovery for Future 2K Accelerators

Slides 2015-12-01_Cryogenic_operation,_Failures_and_Recovery_for_Future_2K_accelerators.ppt

Plenary Talk 6: Cryomodule/HTS Testing of High Q Cavities - M. Liepe (Cornell)

slides Plenary_6_liepe_talk.pptx

6 Plenary Talk 6: Cryomodule/HTS Testing of High Q Cavities

Slides Plenary_6_liepe_talk.pptx

Lunch

WG 1 : High-Q - Conveners: A. Romanenko (FNAL), F. Furuta (Cornell - TBC), K. Umemori (KEK) (30 min coffee Break incl.)

(30 minutes Coffee Break included)

paper WG_1_Agenda_-_1_Dec.xlsx

slides

• Checchin_TTC_Meeting_2015.pdf.pdf
• Field_dependence_of_superconducting_parameters_in_N-doped_cavities.pptx
• gonnella_ttc2015_field_dependence.pdf
• Gurevich_TESLA_nrs.pptx
• N-doping_trial_at_KEK_umemori.pptx
• RsvsH_TTC2015_Xiao.pdf
• WG1_Romanenko_Intro.pptx

7 Doping: introduction

Speaker: A. Romanenko (Fermilab)

Slides WG1_Romanenko_Intro.pptx

8 Q&A

9 Dependence of superconducting parameters on the field

Speaker: Ari Palczewski (JLab)

Slides Field_dependence_of_superconducting_parameters_in_N-doped_cavities.pptx

10 Possible field dependence of superconducting gap for N-doped cavities

Speaker: D. Gonnella (Cornell)

Slides gonnella_ttc2015_field_dependence.pdf

11 Model for the field dependence

Speaker: B. Xiao (BNL)

Slides RsvsH_TTC2015_Xiao.pdf

12 Insight from BCS fitting at different fields

Speaker: M. Checchin (FNAL)

Slides Checchin_TTC_Meeting_2015.pdf

13 Microwave field-induced suppression of Rs in dirty niobium

Speaker: A. Gurevich (ODU)

Slides Gurevich_TESLA_nrs.pptx

14 Possible unoptimal doping

Speaker: K. Umemori (KEK)

Slides N-doping_trial_at_KEK.pdf N-doping_trial_at_KEK_umemori.pptx

15 DISCUSSION

WG 3 : Cryomodule - Conveners: E. Harms (FNAL), H. Nakai (KEK), J. Preble (Jlab), S. Berry (CEA) (30 minutes Coffee Break incl.)

slides

• 20151201_ESS_TTC.pptx
• clean_room_assembly_process_vs_performance_XFEL_-_TTC_2015_V2_-_Copie.pptx
• Development_of_the_cryomodule_for_CADS_injector_I-TTC.pdf
• reliability_improvement_of_XFEL_crymodule_assembly_-_TTC_2015_V3.pptx
• SNS_Operational_History-Mammosser.pptx
• ttc2015-xfel-module-performance.pdf
• WG-3_intro.pptx

16 Cryomodule Development & Integration Experience: Introduction

Speakers: Elvin Harms (Fermilab), Prof. Hirotaka NAKAI (KEK), Joe Preble (JLab), Mr Stéphane BERRY (CEA-Saclay)

Slides WG-3_intro.pptx

17 Cryomodule Development & Integration Experience: Cryomodule Development for C-ADS Injector I

Speaker: Rui Ge (IHEP)

Slides Development_of_the_cryomodule_for_CADS_injector_I-TTC.pdf

18 Cryomodule Development & Integration Experience: Essential factors for improving reliability in cryomodule assembly

Speaker: thierry Trublet (CEA Saclay)

Slides reliability_improvement_of_XFEL_crymodule_assembly_-_TTC_2015_V3.pptx

19 Cryomodule Development & Integration Experience: Horizontal Tests in a Vertical Cryostat for qualifying ESS high-Beta dressed cavities

Speaker: Shrikan Pattalwar (STFC Daresbury)

Slides 20151201_ESS_TTC.pptx

20 Cryomodule Development & Integration Experience: Discussion (all)

21 Cryomodule Performance including Degradation: Ongoing measurements cavity results in STF cryomodules

Speaker: Kirk Yamamoto (KEK)

Slides STF-2_Cryomodule_in_WG3_of_TTC_Meeting_2015.pptx

22 Cryomodule Performance including Degradation: Cause of performance degradation in Linac operation at SNS

Speaker: Mr John Mammosser (ORNL/SNS)

Slides SNS_Operational_History-Mammosser.pptx

23 Cryomodule Performance including Degradation: Clean room assembly process vs. XFEL cryomodule performances

Speaker: Mr Stéphane BERRY (CEA-Saclay)

Slides clean_room_assembly_process_vs_performance_XFEL_-_TTC_2015_V2_-_Copie.pptx

24 Cryomodule Performance including Degradation: Comparison of Cavity Performance in XFEL Cryomodules

Speaker: Dr Nicholas Walker (DESY)

Slides ttc2015-xfel-module-performance.pdf

25 Cryomodule Performance including Degradation: Discussion (all)

Collaboration Board Meeting

Wednesday 2 December

WG 3 - Cryomodule, Conveners: E. Harms (FNAL), H. Nankai (KEK), J. Preble (JLAB), S. Berry (CEA)

WG 3 - Cryomodule, Conveners: E. Harms (FNAL), H. Nankai (KEK), J. Preble (JLAB), S. Berry (CEA)

slides

• 2015_12_02_-_Jensch_XFEL_TTC_v01.pptx
• Kaluzny_TTC_materials_20151202.pptx
• Material_Tests_SC_Cavities.pdf
• Titanium_welding_HeAr_vs_Ar_XFEL_-_TTC_2015_V2.pptx
• XFEL_cold_mass_&_vacuum_vessel_non-conformities_-_TTC_2015_V1.pptx
• XM46_repair_-_TTC_2015_V1.pptx

26 Materials issues: Helium circuit/vessel material

Speaker: Hirotaka Nakai (KEK)

Slides TTC2015(Nakai)20151201.pdf

27 Materials issues: Titanum welding with pure Argon versus Argon+Helium

Speaker: Mr Stéphane BERRY (CEA-Saclay)

Slides Titanium_welding_HeAr_vs_Ar_XFEL_-_TTC_2015_V2.pptx

28 Materials issues: Incoming inspection of component: cold mass example

Speaker: thierry Trublet (CEA Saclay)

Slides XFEL_cold_mass_&_vacuum_vessel_non-conformities_-_TTC_2015_V1.pptx

29 Materials issues: TBC

Speaker: Joshua Kaluzny (FNAL)

Slides Kaluzny_TTC_materials_20151202.pptx

30 Materials issues: Discussion (all)

31 Installation and Rework/Remediation issues: Difficulties during cryomodule installation into the E-XFEL tunnel

Speaker: Mr Kay Jensch (DESY)

Slides 2015_12_02_-_Jensch_XFEL_TTC_v01.pptx

32 Other topics: Beam vacuum leak repair without schedule impact (XM46)

Speaker: Mr Stéphane BERRY (CEA-Saclay)

Slides XM46_repair_-_TTC_2015_V1.pptx

33 Discussion (All)

34 Summary of WG-3: Discussion (All)

Slides WG-3_summary_jpp.pptx

WG1 - High Q, Conveners: A Romanenko (FNAL), F. Furuta (Cornell), K. Umemori (KEK)

WG1 - High Q, Conveners: A Romanenko (FNAL), F. Furuta (Cornell), K. Umemori (KEK)

slides

• 2015_TTC_Chandrasekaran.pptx
• flux_trapping.pdf
• Gurevich_TESLA_vort.pptx
• PosenTTC2015.pptx
• TTC_Martina.pptx

35 Intro: realistic magnetic fields in accelerators

Speaker: Saravan Chandrasekaran (Fermilab)

Slides 2015_TTC_Chandrasekaran.pptx

36 Q&A

37 Flux expulsion for different cavity materials and treatments

Speaker: Sam Posen (Fermilab)

Slides PosenTTC2015.pdf PosenTTC2015.pptx

38 Model to explain the observed flux expulsion dependence on the thermal gradient

Speaker: Takayuki Kubo (KEK)

Slides 151202b【TTC@SLAC】flux_trapping.pdf

39 Trapped flux dissipation for different surface treatments: results and model

Speaker: Martina Martinello (Fermilab)

Slides TTC_Martina.pptx

40 Dissipative motion of trapped flux and its relation to the mean free path

Speaker: Alex Gurevich (Old Dominion University)

Slides Gurevich_TESLA_vort.pptx

41 DISCUSSION

12:30 Lunch Break

WG 2 - Cavity, Conveners: D. Reschke (DESY), P. McIntosh (STFC), S. Bousson (IPN-Orsay), J. Zhai (IHEP)

WG 2 - Cavity, Conveners: D. Reschke (DESY), P. McIntosh (STFC), S. Bousson (IPN-Orsay), J. Zhai (IHEP)

slides

• 20151202TTC2015Umezawa.ppt
• HWR_Cavities_for_China_ADS.pptx
• MHI-MS’s_view_on_cavity_fabrication_and_engineering.pdf
• PAVAC_TTC_20151203.pptx
• Production_of_420_SRF_cavities_for_XFEL.pdf
• TTC15-WG2-Sekutowicz_2015-12-02.pptx
• TTC2015_yamanaka.pptx
• TTCmeeting_presentation_(ULVAC_Nagata).pptx
• TTC_SLAC_WG2_Introduction.pptx

42 Welcome + Introduction

Speakers: Detlef Reschke (DESY), Jiyuan Zhai (IHEP), Peter McIntosh (peter.mcintosh@stfc.ac.uk), Sebastien Bousson (IPN Orsay)

Slides TTC_SLAC_WG2_Introduction.pptx

43 Session 1: Feedback from industry about cavity production: Industrial perspective on working with scientific customers

Speakers: Detlef Reschke (DESY), Peter McIntosh (peter.mcintosh@stfc.ac.uk), Sebastien Bousson (IPN Orsay)

44 Session 1, Talk 1 of 3: RI's view on cavity production (European XFEL, …)

Speaker: Michael Pekeler (RI Research Instruments GmbH)

Slides 2015-12-02_RI_XFEL_cavity_production.pdf

45 Session 1, Talk 2 of 3: PAVAC's view on cavity production(FRIB, …) incl. 00:05 min questions

Speaker: Ralf Edinger (Pavac Industries, Inc.)

Slides PAVAC_TTC_20151203.pptx

46 Session 1, Talk 3 of 3: MHI's view on cavity production

Speaker: Katsuya Sennyu (MHI-MS)

Slides TTC2015_presentation2.pdf

47 Discussion

48 Coffee Break

49 Performance of LG and FG dressed cavities in XFEL cryomodules

Speaker: Jacek Sekutowicz (DESY)

Slides TTC15-WG2-Sekutowicz_2015-12-02.pptx

50 HWR015 and HWR030 cavities for C-ADS (incl. 00:05 min questions)

Speaker: Yongming Li (Institute of Modern Physics, Chinese Academy of Sciences)

Slides HWR_Cavities_for_China_ADS.pptx

51 Production of high purity niobium for SRF accelerators (incl. 00:05 min questions)

Speaker: Tomohiro Nagata (ULVAC Inc.)

Slides TTCmeeting_presentation_(ULVAC_Nagata).pptx

52 Fabrication and evaluation of low RRR large grain single cell cavity (incl. 00:05 min questions)

Speaker: Masashi Yamanaka (KEK)

Slides TTC2015_yamanaka.pptx

53 Niobium materials with large grain and fine grain at Tokyo Denkai (incl. 00:05 minutes questions)

Speaker: Hiroaki Umezawa (Tokyo Denkai Co., Ltd.)

Slides 20151202TTC2015Umezawa.ppt

WG 4 - FP Couplers, Conveners: Y. Pischnalnikov (FNAL), R. Paparella (INFN), W. Kaabi (LAL), E. Montesinos (CERN)

WG 4 - FP Couplers, Conveners: Y. Pischalnikov (FNAL), R. Paparella (INFN), W. Kaabi (LAL), E. Montesinos (CERN)

slides

• Adolphsen_TTC_Coupler_12_02_15.pptx
• anomalous_heating.pdf
• CPI_Experience.pdf
• FPC_outgassing_Mircea.pptx
• IFMIF_PC_TTC_2015_HJ.pptx
• SNS_Fundamental_Power_Coupler_History-Mammosser.pptx
• STF_Coupler_in_WG4_of_TTC_Meeting_2015.pptx
• TETD's_fabrication_experiences.pdf
• TTC_2015_Detachable_Coupler_YiXie_Final_version.pptx
• TTC_2015_Thales_Serge_Sierra.ppt
• TTC_Meeting_2015_Walid.pptx
• TTF-III_like_Coupler_R&D_at_IMP.pptx

54 Introduction

55 LCLS-II challenges

Speaker: Chris Adolphsen (SLAC National Accelerator Laboratory)

Slides Adolphsen_TTC_Coupler_12_02_15.pptx

56 FPC out-gassing

Speaker: Mircea Stirbet (JLab)

Transparents FPC_outgassing_Mircea.pptx

57 Experience of FPC mass production

Speaker: Serge Sierra

Transparents TTC_2015_Thales_Serge_Sierra.ppt

58 XFEL coupler Mass production at LAL

Speaker: Walid Kaabi (LAL)

Transparents TTC_Meeting_2015_Walid.pptx

59 CPI experience

Speaker: Todd Treado (CPI)

Transparents TTC_Meeting_CPI_Todd_Treado.pdf

60 TTF-III like coupler R&D in IMP

Speaker: Yongming Li (IMP)

61 Break

62 SNS

Speaker: John Mammosser (ORNL)

Transparents SNS_Fundamental_Power_Coupler_History-Mammosser.pptx

63 Performance for STF-II coupler in STF-2 Cryomodule / R&D for 40mm STF coupler for the ILC

Speaker: Yasuchka Yamamoto (KEK)

Transparents STF_Coupler_in_WG4_of_TTC_Meeting_2015.pptx

64 Manufacturing of the IFMIF FPC

Speaker: Hassen Jenhani (CEA)

Transparents IFMIF_PC_TTC_2015_HJ.pptx

65 Detachable coupler

Speaker: Yi Xie (FNAL)

Transparents TTC_2015_Detachable_Coupler_YiXie_Final_version.pptx

66 HIE-Isolde FPC

Speaker: Akira Miyasaki (CERN)

Transparents TTC_coupler_miyazaki_indico.pdf

67 TETD's fabrication experiences

Speaker: Osamu Yushiro (Toshiba)

Transparents TETD_presentation_TTC_201512_.pdf

68 Discussion

Thursday 3 December

WG 2 - Cavity, Conveners: D. Reschke (DESY), P. McIntosh (STFC), S. Bousson (IPN-Orsay), J. Zhai (IHEP)

Cavity - D. Reschke (DESY), P. McIntosh (STFC), S. Bousson (IPN-Orsay), J. Zhai (IHEP)

slides

• KEK_Field-emission_and_radiation_in_WG2_of_TTC_Meeting_2015.pptx
• Radiation_Field_Emission_in_vertical_test_at_JLab_RG25nov15.pptx
• TTC_December2015_KarlSchirm_WG2.pptx
• TTC_SLAC_RadiationMeasurementDESY_Dec15.pptx
• ttc-xfel-vt-xray_DESY.pdf
• WG2_FE_Cornell.pptx

69 Cavity Testing: Radiation, Dark current, Processing, Degradation, …

Organisation: A) Instrumentation; Limits; Procedures B) Results incl. Reprocessing

Speakers: Detlef Reschke (DESY), Jiyuan Zhai (Institute of High Energy Physics, Chinese Academy of Sciences), Peter McIntosh (STFC Daresbury Laboratory), Sebastien Bousson (IPN Orsay)

Slides

• KEK_Field-emission_and_radiation_in_WG2_of_TTC_Meeting_2015.pptx
• Radiation_Field_Emission_in_vertical_test_at_JLab_RG25nov15.pptx
• TTC_December2015_KarlSchirm_WG2.pptx
• TTC_SLAC_RadiationMeasurementDESY_Dec15.pptx
• ttc-xfel-vt-xray_DESY.pdf
• WG2_FE_Cornell.pptx

WG 4 - FP Tuners, Conveners: Y. Pischnalnikov (FNAL), R. Paparella (INFN), W. Kaabi (LAL), E. Montesinos (CERN)

WG 4 - FP Tuners, Conveners: Y. Pischalnikov (FNAL), R. Paparella (INFN), W. Kaabi (LAL), E. Montesinos (CERN)

slides

• ADS_spoke_tuner.ppt
• SNS_Tuner_History_-Mammosser.pptx
• STF_Tuner_in_WG4_of_TTC_Meeting_2015.pptx
• TTC2015-CEBAF-SNS-TunerREV1.ppt.pptx
• TTC2015-LCLS_II-Reliability_1.pptx
• TTC_meeting_Gandolfo_Spiral2_ESS.pptx
• Tuner_performance_at_cERL.pdf
• Working_Group__4-Tuner-Introduction_-_final.pptx
• XFEL_Tuner.pptx
• XFEL_Tuner_system_non-conformities_-_TTC_2015_V2.pptx

70 Introduction

Speakers: Eric Montesinos (CERN), Rocco Pararella (INFN Milano), Walid Kaabi (LAL-CNRS), Yuriy Pischalnikov (Fermilab)

Slides Working_Group__4-Tuner-Introduction_-_final.pptx

71 ADS Spoke cavities

Speaker: Zhenghui Mi (Institute of High Energy Physics, Chinese Academy of Sciences)

Slides ADS_spoke_tuner.ppt

72 ESS & Spiral 2

Speaker: Nicolas Gandolfo (IPN Orsay)

Slides TTC_meeting_Gandolfo_Spiral2_ESS.pptx

73 cERL

Speaker: Kensei Umemori (KEK)

Slides Tuner_performance_at_cERL(umemori).pdf

74 STF

Speaker: Yasuchika Yamamoto (KEK)

Slides STF_Tuner_in_WG4_of_TTC_Meeting_2015.pptx

75 CEBAF&SNS

Speaker: Edward Daly (Jefferson Lab)

Slides TTC2015-CEBAF-SNS-TunerREV1.ppt.pptx

76 SNS experience

Speaker: John Mammosser (ORNL/SNS)

Slides SNS_Tuner_History_-Mammosser.pptx

77 XFEL tuner assembly experience

Speaker: Thierry Trublet (CEA Saclay)

Slides XFEL_Tuner_system_non-conformities_-_TTC_2015_V2.pptx

78 XFEL 3.9GHz & 1.3GHz tuner

Speaker: Rocco Paparella (INFN Milano)

Slides XFEL_Tuner.pptx

79 LCLS II tuner/lifetime tests

Speaker: Yuriy Pischalnikov (Fermilab)

Slides TTC2015-LCLS_II-Reliability_1.pptx

80 DISCUSSION

12:30 Lunch Break

Technical Board Meeting

Preparation for Summary Talk (Conveners only)

Preparation for Summary Talk

SLAC Tours

SLAC Tours for Conveners

19:00 Dinner (Optional Event - Social Fee)

Friday 4 December

Plenary Talk 7: Summary Report from ERL15 WS - E. Jensen (CERN)

slides EJ_Summary_Report_ERL15.pptx

Plenary Talk 8: Invited Talk on Clean Room/Clean Infrastructure Design and Operation - J. Paul (HDR Engineering)

slides FINAL_TTC_Conference_151204_HDR_Cleanroom_Const_and_Operation.pptx

81 Plenary Talk 8: Invited Talk on Clean Room/Clean Infrastructure Design and Operation

Slides FINAL_TTC_Conference_151204_HDR_Cleanroom_Const_and_Operation.pptx

Summary Talk WG 1 - WG 1 Conveners

Conveners: Alex Romanenko (FNAL), Fumio Furuta (Cornell University), Kensei Umemori (KEK)

slides WG1_summary_Romanenko.pptx

Summary Talk, WG 2 - WG 2 Conveners

Conveners: Detlef Reschke (DESY), Jiyuan Zhai (IHEP), Peter McIntosh (STFC Daresbury Laboratory), Sebastien Bousson (IPN Orsay)

slides WG2_Cavities_-_Summary_v1_DR.pptx

10:40 Coffee Break

Coffee Break

Summary Talk, WG 3 - WG 3 Conveners

Conveners: Elvin Harms (Fermilab), Prof. Hirotaka NAKAI (KEK), Joe Preble (JLab), Mr Stéphane BERRY (CEA-Saclay)

slides WG-3_summary_jpp_eh_sb.pptx

82 Summary Talk, WG 3

Speaker: Elvin Harms (FNAL)

Slides WG-3_summary_jpp_eh_sb.pptx

Summary Talk, WG - WG 4 Conveners

Conveners: Eric Montesinos (CERN), Rocco Paparella (INFN Milano), Walid Kaabi (LAL-CNRS), Yuriy Pischalnikov (Fermilab)

slides TC_meeting_2015_WG4a_summary.pptx TC_meeting_2015_WG4b_summary-final.pptx

TB Report - Eiji Kako (KEK)

TB Report - Eiji Kako (KEK)

slides Report_TTC-TB_meeting_at_SLAC,_2015_Dec_04.pptx

CB Report - Hasan Padamsee (Cornell)

CB Report - Hasan Padamsee (Cornell)

slides CB_Summmary_Closing.pptx

Closing - Hasan Padamsee (Cornell)

Closing - Hasan Padamsee (Cornell)

Adjourn

Adjourn