TESLA Technology Collaboration (TTC) Meeting

6 Feb 2018, 08:30 → 9 Feb 2018, 18:30 Europe/Rome

Aula A, C & D (Physics Department)

Carlo Pagani (MI)

The mission of the TESLA Technology Collaboration is to advance SCRF 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.
You are welcome to the yearly TTC meeting hosted in Milano by the Università degli Studi di Milano and INFN Sezione di Milano.

INFN Istituto Nazionale di Fisica Nucleare Sezione di Milano	Università degli Studi di Milano Dipartimento di Fisica

Meeting Poster Locandina.pdf

Tuesday, 6 February

08:30 → 09:00 Registration

09:00 → 09:15 Welcome

09:00 INFN-Milan, welcome and logistics

Speaker: Carlo Pagani (MI)

Slides Welcome_and_Logistics_CP_DS_RP.pptx

09:15 → 10:30 Opening Plenary 1: Welcome and introduction, status and progress reports

Convener: W.-D. Moeller

09:15 Introduction and update from last collaboration meeting

Speaker: Hasan Padamsee (Cornell)

Slides Milan_TTC_opening_Padamsee.pptx

09:30 LCLS-II progress with cavity and CM production and testing

Speaker: Marc Ross (SLAC)

Slides Ross_INFN_TTC_2018_0206.pptm

10:00 Recent progress in SRF cavity components and module tests at FRIB

Speaker: Kenji Saito (FRIB)

Slides TTC_Meeting_February_2018_final.pptx

10:30 → 11:00 Coffee Break

11:00 → 12:00 WG-1 Session 1: CW SRF cavity operational challanges - high beta cavities

Conveners: Dr A. Neumann, Dr G. Wu, Dr J. Zhai

11:00 CW accelerating module test progress at DESY

Speaker: Dr Denis Kostin (DESY)

Slides CW accelerating module test progress at DESY

11:15 15 years of CW SRF operation at ELBE

Speaker: Dr Andre Arnold (HZDR ELBE)

Slides TTC_Andre_Arnold_HZDR.pptx

11:30 3.9 GHz CW challenges and recent horizontal test results for 3.9 GHz Cavity

Speaker: Dr Sebastian Aderhold (FNAL)

Slides TTC18_Aderhold_final.pdf

11:45 Large Grain Cavities in a CEBAF Cryomodule

Speaker: Dr Gianluigi Ciovati (JLAB)

Slides Large_grain_cavities_in_a_CEBAF_cryomodule-1.pptx

11:00 → 12:30 WG-3 Session 1

Conveners: C. Hovater, G. Huang, M. Omet

11:00 LLRF commissioning of 25MeV Proton SC Linac and design for 500MeV CW Linac

Speaker: Dr Zheng Gao (IMP)

Slides TTC_Talk_Gao.pdf

11:22 SNS LLRF/Operation Experience

Speaker: Dr Mark Crofford (SNS)

Slides 2_TTC_Milan_r1.pptx

11:44 CEBAF LLRF and C100 Experience

Speaker: Dr Curt Hovater (JLAB)

Slides TTC_CH.pptx

12:06 LLRF of the European XFEL

Speaker: Dr M. Omet (Deutsches Elektronen-Synchrotron)

Slides OMET_Presentation_LLRF_of_the_European_XFEL_TTC_20180206_v2.pptx

12:28 Discussion

12:00 → 12:30 WG-1 Session 2: Flux Trapping in CW SRF

Conveners: A. Neumann, G. Wu, J. Zhai

12:00 Experiment of Active Coil Cancellation on a LCLS-II cryomodule

Speaker: S. Chandrasekaran (FNAL)

Slides 20180206-Saravan-TTC-Field_Cancellation_Test_v3-regular.pdf

12:18 Flux expulsion experiments at KEK

Speaker: Dr Kensei Umemori (KEK)

Slides Flux_expulsion_experiments_at_KEK.pptx

12:30 → 14:00 Lunch

14:00 → 15:30 WG-1 Session 2: Flux Trapping in CW SRF

Conveners: A. Nuemann, G. Wu, Mr Jiyuan Zhai (IHEP)

14:00 Fundamental Studies of Flux Trapping

Speaker: Dr Sam Posen (FNAL)

Slides Posen-TTC2018-flux.pptx

14:20 Achieving High Q in LCLS-II Cavity Production

Speaker: Dr Dan Gonella (SLAC)

Slides lclsii_cavity_performance_gonnella.pptx

14:30 Trapped Flux Studies in Horizontal Tests

Speaker: Dr Julia-marie Koeszegi (HZB)

Slides TTC2018_koeszegi.pptx

14:45 Flux Expulsion of LCLS-II Cryomodules

Speaker: Dr Genfa Wu (FNAL)

Slides Wu_Cool_Down_Studies_of_LCLS-II_Cryomodules.pptx

15:00 Trapped Flux Studies on Low Beta Cavities at IPNO

Speaker: Dr David Longuevergne (IPN Orsay)

Slides TTC_Milano_WG1_S2_Longuevergne_v3.pptx

15:15 Discussion

14:00 → 15:30 WG-3 Session 2

Conveners: C. Hovater, G. Huang, M. Omet

14:00 Microphonics

Speaker: Dr A. Neumann (HZB)

Slides TTC2018_Milano_Neumann_WG3_1_Microphonics.pptx

14:22 Microphonics Experience at cERL

Speaker: Dr Hiroshi sakai (KEK)

Slides TTC2017_sakai_final.pdf

14:45 He Pressure effects in CW cryomodules

Speaker: Dr Ed Daly (JLAB)

Slides 0L04_Helium_Bath_Pressure_Study_06FEB18.pptx

15:07 Impact of Thermo-acoustics oscillations on the LCLS II CM microphonics

Speaker: Dr Yuriy Pischalnikov (FNAL)

Slides PreTAO-TT2018_V2.pptx

15:30 → 16:00 Coffee Break

16:00 → 17:30 WG-1 Session 3: CW SRF cavity operational challenges - low beta cavities

Conveners: A. Neumann, G. Wu, J. Zhai

16:00 Cavity Performance Limitations in FRIB Cryomodules

Speaker: Dr Kenji Saito (FRIB)

Slides TTC_Meeting_201802_WG1_final_Saito.pptx

16:15 Preparation, processing, assembling and testing of spoke resonators: from SSR1 jacketed cavities to string assembly

Speaker: Dr Mattia Parise (FNAL)

Slides MattiaParise_Talk.pptx

16:30 Fabrication and VT results in RIKEN-QWR Cavity

Speaker: Dr Naruhiko Sakamoto (RIKEN)

Slides NaruhikoSakamoto-WG1-3.pptx

16:45 Analysis of HIE ISOLDE cavity results

Speaker: Dr Akira Miyazaki (CERN)

Slides AkiraMiyazaki__TTCMilano_upload.pdf

17:00 Nb/Cu cavity development at IMP for the stable operation of high current CW beam

Speaker: Dr Teng Tan (IMP)

Slides TTC_Milano_Teng_-_NEW.pptx

17:15 Discussion

16:00 → 17:30 WG-3 Session 3

Conveners: C. Hovater, G. Huang, M. Omet

16:00 Resonance Control at FNAL

Speaker: Dr Yuriy Pischalnikov (FNAL)

Slides ARC_FNAL_YuriyPi_feb_6.pptx

16:30 Microphonics measurement and compensation in SRF cavities

Speaker: Dr Radoslaw Rybaniec (DESY)

Slides RR_SRF_Micro_Milano.pdf

17:00 Passive Microphonics Control

Speaker: Dr Tom Powers (JLAB)

Slides TTC_Microphonics_Talk_powers_1.pdf

18:00 → 19:30 CB Meeting

Wednesday, 7 February

09:00 → 10:30 Plenary 2

Convener: Paolo Pierini

09:00 Thin film research: CERN experience and possible future applications

Speaker: Walter Venturini Delsolaro (CERN)

Slides Nb-Cu_CERN_experience_and_possible_future_applications.pptx

09:30 ESS prototype testing and test-stands progress

Speaker: Roger Ruber (Uppsala University)

Slides 20180207-ESS_Testing_and_Test_Stands.pptx

10:00 SRF technology in China; Infrastructure and industrialization for various projects

Speaker: Dong Wang (SINAP)

Slides TTC-Infrastructure-Industry-China20180207.pdf

10:30 → 11:00 Coffee Break

11:00 → 11:45 WG-1 Session 4: Field Emission in CW SRF

Conveners: A. Neumann, G. Wu, J. Zhai

11:00 Field Emission Comparison between CW and Pulsed Cryomodules

Speaker: Olivier Napoly (CEA)

Slides 20180207_TTC_Meeting.pdf

11:15 Current Understanding of Field Emission in CEBAF Linac

Speaker: Dr Rongli Geng (JLAB)

Slides Geng_TTC2018_Milan_Understanding_FieldEmission_in_CEBAF.pptx

11:30 Field Emission Results for LCLS-II Production (VT to CM)

Speaker: Dr Dan Gonella (SLAC)

Slides lclsii_cm_field_emission_gonnella.pptx

11:00 → 12:30 WG-3 Session 4

Conveners: C. Hovater, G. Huang, M. Omet

11:00 Microphonic Noise and Mechanical Resonances at CMTF and the European XFEL

Speaker: Mr Andrea Bellandi (DESY)

Slides Presentation_micro_and_mech_TTC_2018.pptx

11:18 Individual and vector sum CW operation of X-FEL module in high Ql (6e7) conditions

Speaker: Dr Wojciech Cichalewski (DMCS)

Slides 2_WCichalewski.pdf

11:36 CEBAF Gradient Team

Speaker: Dr Clyde Mounts (JLAB)

Slides 3_Milan_2018_Gradient_Management_fin_1.pdf

11:54 The challenge of operating a superconducting cavity at 5 Hz bandwidth

Speaker: Dr Daniel Valuch (CERN)

Slides 4_TTC18_Valuch.pptx

12:12 Early Results of the LCLS-II LLRF System

Speaker: Dr Alessandro Ratti

Slides Ratti-LCLS-II-LLRF-Status-TTC-Feb18-R2.pptx

11:45 → 12:30 WG-1 Session 5: Planned CW SRF

Conveners: Dr A. Neumann, Dr G. Wu, Mr J. Zhai (IHEP)

11:45 SRF system for a new 6 GeV synchrotron light source in Beijing

Speaker: Dr Pei Zhang (IHEP)

Slides 20180207-SRF-System-HEPS-PeiZhang.pptx

12:00 Higher Harmonic Cavity for Bessy Upgrade

Speaker: Dr Andranik Tsakanian (HZB)

Slides TTC2018_Workshop_Tsakanian_Print.pdf

12:15 Developing 3.9 GHz cavities for CW SCLF

Speaker: Dr Jinfang Chen (SINAP)

Slides TTC-Developing_3.9_GHz_cavity_for_SCLF-JFChen.pptx

12:30 → 14:00 Lunch

14:00 → 15:30 Special Talks

Convener: Eiji Kako (KEK)

14:00 SRF from INFN/Milano

Speaker: Carlo Pagani (INFN-UNIMI)

Slides C.Pagani_SRF_at_INFN_Milano-LASA.pptx

14:30 New non-accelerator applications of SRF technology

Speaker: Alexander Romanenko (FNAL)

Slides TTC2018_Romanenko_NonAcceleratorApps.pptx

15:00 Summary report on the SRF in a dirty machine workshop

Speaker: Emmy Sharples (HZB)

Slides presentation_for_the_TTCv2.pptx

15:30 → 16:00 Coffee Break

16:00 → 17:40 Hot-topic: Performance recovery: Cavity, Modules, Linacs

Conveners: E. Sharples, H. Sakai, P. Michelato

16:00 Plasma ignition in LCLS-II cavities

Speaker: Dr Martina Martinello (FNAL)

Slides Plasma_ignition_TTC2018-TD-126712.pptx

16:10 Multipacting and conditioning cases for EU-XFEL

Speaker: Dr Denis Kostin (DESY)

Slides HotTopic_EXFEL_DKostin.pptx

16:20 Performance recovery on CEBAF

Speaker: Dr Mike Drury (JLAB)

Slides Performance_Recovery_at_CEBAF.pptx

16:30 Performance recovery by using horizontal HPR

Speakers: Dr Eiji Kako (KEK), Dr Michiru Nishiwaki (KEK)

Slides Nishiwaki_HHPR_short.mp4 Nishiwaki_Rev2_SKB-SCC-HHPR.pptx

16:40 Strategy for operation and recovery of performance at SNS

Speaker: Dr John Mammosser (SNS)

Slides Strategy_for_operation_and_recovery_of_performance_at_SNS.pptx

16:50 Discussion

18:00 → 19:30 TB Meeting

Thursday, 8 February

09:00 → 10:30 Plenary 3

Convener: Akira Yamamoto (CERN/KEK)

09:00 European-XFEL SC accelelator commissioning and operation

Speaker: Dr Julien Branlard

Slides 2018_02_08_-_J.Branlard_-_TTC_-_XFEL_commissioning_and_operation.pptx

09:30 Report from TTC topical workshop on "pushing cavity performance limits"

Speaker: SERGEY BELOMESTNYKH (FNAL)

Slides Report_from_the_TTC_Topical_WS.pptx

10:00 Frequency dependence of surface resistance and non-equilibrium superconductivity

Speaker: MARTINA MARTINELLO (FNAL)

Slides FreqDep_TTC2018_MM.pptx

10:30 → 11:00 Coffee Break

11:00 → 12:30 WG-2 Session 1 - Couplers

Conveners: K. Yamamoto, R. Paparella, Y. Pischalnikov

11:00 Coupler operation and R&D activities at IMP

Speaker: Dr Tiancai Jiang (IMP)

Slides TTC2018_Coupler_talk_JIANG_TC.pptx

11:15 High Power Main couplers for CW/RF operation

Speaker: Dr Sergey Kazakov (FNAL)

Slides TTC_2018_couplers.pdf

11:30 Main coupler R&D at DESY

Speaker: Dr Denis Kostin (DESY)

Slides Main Coupler R&D at DESY

11:45 LCLS II cavity HOM coupler tuning and measurements during cold test

Speaker: Dr Timergali Khabiboulline (FNAL)

Slides TTC2018_HOM_coupler_Khabiboulline.pdf

12:00 Discussion

11:00 → 12:30 WG-4 Session 1 - Up to 40 MV/m, N-infusion

Conveners: A. Grassellino, K. Umemori, L. Steder

11:00 Recent results of cavity infusion at DESY

Speaker: Dr Christopher Bate (University of Hamburg)

Slides TTC_Mailand_2018_Christopher_Bate__V3.pptx

11:15 N-infusion at KEK / J-PARC

Speaker: Dr Kensei Umemori (KEK)

Slides N-infusion_KEK_umemori.pdf

11:30 Progress in N-infusion at FNAL

Speaker: Dr Mattia Checchin (FNAL)

Slides Checcin_TTC_2018_Milan_v1.pptx

11:45 Sample study for N-infusion

Speaker: Dr Guiherme Semione (DESY)

Slides ttc_Semione_2018.pdf

12:00 Latest material analysis on state of the art treatments (including doping and infusion cutouts)

Speaker: Dr Zuwhan Sung (FNAL)

Slides ZHSung_-_TTC_Meeting_Feb_6-9_2018-WG4-Thus_pdf.pdf

12:15 Discussion

12:30 → 14:00 Lunch

14:00 → 15:30 WG-2 Session 2 - Tuners

Conveners: K. Yamamoto, R. Paparella, Y. Pischalnikov

14:00 Lessons learned from ADS spoke cavity tuners and helium vessels

Speaker: Dr Mi Zhenghui (IHEP)

Slides Lessons_learned_from_ADS_spoke_cavity_tuners_and_helium_vessels-V3.ppt

14:15 Development of Tuners for LCLS-II (1.3 GHz, 3.9 GHz) and PIP II (all cavities)

Speaker: Dr Yuriy Pischalnikov (FNAL)

Slides Development_of_Tuners_at_FNAL_YuriyPi.pptx

14:45 MYRRHA SC linac spoke cavity system

Speaker: Dr Nicolas Gandolfo (IPNO)

Slides 08-02-2018_-_TTC_Meeting_2018_-_MYRRHA_Spoke_Tuner.pptx

15:00 C-ADS tuner systems

Speaker: Dr Tiancai Jiang (IMP)

Slides TTC2018_talk_tuner_JIANGtc.pptx

15:15 Discussion

14:00 → 15:30 WG-4 Session 2 - Higher than 50 MV/m

Conveners: A. Grassellino, K. Umemori, L. Steder

14:00 Nb3Sn from Cornell

Speaker: Dr Ryan Porter (Cornell University)

Slides Porter_TTC_Milan_2018.pptx

14:18 Limiting defects on Nb3Sn coating cavity at FNAL

Speaker: Dr Jae-Yel Lee (Northwestern University)

Slides Lee_Limiting_defects_on_Nb3Sn_coating_cavity_in_FNAL_TTC_2018_in_Milan_180208_.pdf

14:36 RF critical field of Nb3Sn and N-doped niobium

Speaker: Dr Sebastian Keckert (HZB)

Slides 20180208_keckert.pdf

14:54 Higher gradients by utilizing non-equilibrium superconductivity

Speaker: Dr Alex Romanenko (FNAL)

Slides TTC2018_Gradient_Romanenko.pptx

15:12 Discussion

15:30 → 16:00 Coffee Break

16:00 → 17:30 WG-2 Session 3 - Cryomodules

Conveners: K. Yamamoto, R. Paparella, Y. Pischalnikov

16:00 Spoke cavity cryomodule for C-ADS

Speaker: Dr Rui Ge (IHEP)

Slides Spoke_Cavity_Cryomodule_for_C-ADS.ppt

16:15 Cryomodule for RIKEN QWR

Speaker: Dr Kazutaka Ozeki (RIKEN)

Slides TTC2018_WG2-3_ozeki.pdf

16:30 IFMIF HWR cryomodule and magnetic shield properties

Speaker: Dr Juliette Plouin (CEA)

Slides PLOUIN_TTC2018.pptx

16:45 Troubleshooting and stability analysis of CW RF operation at China ADS front-end demo linac

Speaker: Dr Yuan He (IMP)

Slides TTC2018-WG2-Trouble_shorting_of_CADS-hey.pptx

17:00 JLAB CMTF Fast Cooldown

Speaker: Dr Naeem Huque

Slides JLab_CMTF_Fast_Cooldown.pptx

17:10 Discussion

16:00 → 17:30 WG-4 Session 3 - Pulsed cryomodules and components

Conveners: A. Grassellino, K. Umemori, L. Steder

16:00 High power coupler

Speaker: Dr Yasuchika Yamamoto (KEK)

Slides Power_Coupler_in_Pulsed_Operation_20180208.pptx

16:15 Challenges with PIP-II cryomodule

Speaker: Dr Allan Rowe (FNAL)

Slides TTC_Milan_Rowe.pdf

16:30 Experience with commissioning of high-Gradient cryomodule for Euro-XFEL

Speaker: Dr Mathieu Omet (DESY)

Slides OMET_Presentation_Experience_with_Commissioning_on_High-Gradient_Cryomodules_for_the_European_XFEL_TTC_20180208_v3.pdf

16:45 LFD compensation for high-gradient cryomodule

Speaker: Dr Yuriy Pishalnikov (FNAL)

Slides ResControlPulseCavities_withMovie_V1.pptx

17:00 FNAL CM2 with beam - new record

Speaker: Dr Daniel Broemmelsiek (FNAL)

Slides Broemmelsiek_FNAL_CM2_with_beam.pptx

17:15 Discussion on optimum condition for larger beam current operation

Speaker: Dr John Mammosser (SNS)

Slides Discussion_on_optimum_condition_for_larger_beam_current.pptx

18:00 → 19:30 Summary Preparation

Summary preparation (only conveners)

20:00 → 23:00 Social Dinner

Friday, 9 February

09:00 → 10:30 Closing Plenary: Science and Energy by TESLA Technology

Convener: Carlo Pagani

09:00 New energy production pontentialities with SRF Accelerator Driven Systems

Speaker: Wenlong Zhan (CAS)

Slides perspective_of_fission_energy_driven_by_SRF-accelerator_2018.pptx

Video Video of the presentation

09:45 New physics potentialities with SRF based XFELs

Speaker: Jochen Schneider (DESY)

Slides Schneider_TTC_Mailand_2018.pptx

Video Broadcast by Università degli Studi di Milano

10:30 → 10:45 Break

10:45 → 12:45 Plenary 4

Convener: Sergei Belomestnykh

10:45 Summary Talk-1: WG-1 conveners

Slides WG1_Summary_combined_v1.pptx

11:00 Summary Talk-2: WG-2 conveners

Slides WG2_-_Summary.pptx

11:15 Summary Talk-3: WG-3 conveners

Slides WG3_Summary_v3.pptx

11:30 Summary Talk-4: WG-4 conveners

Slides WG4_pulse_cryomodule_summary.pptx

11:45 TB Report

Speaker: Eiji Kako (KEK)

Slides Report_of_TTC-TB_meeting_at_INFN-Milano,_2018_Feb._9.pptx

11:55 CB Report

Speaker: Hasan Padamsee (Cornell)

Slides Milan_TTC_Closing_Padamsee.pptx

12:15 Closing remarks

Speaker: Carlo Pagani (MI)

Slides C.Pagani_Memories__Thanks.pptx

12:45 → 14:00 Lunch Break

14:00 → 18:00 LASA lab tour