TTC meeting 2018 at RIKEN Nishina Center

26 Jun 2018, 08:30 → 29 Jun 2018, 17:30 Asia/Tokyo

RIKEN Nishina Center

Naruhiko SAKAMOTO (RIKEN Nishina Center)

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. This time, TTC meeting is hosted by RIKEN Nishina Center on 26-29 June 2018.

Dr. Naruhiko SAKAMOTO

Chair of the Local Organizing Committee

Tuesday 26 June

08:30 → 09:00 Registration

Conveners: Akito UCHIYAMA (RNC), Izumi Yoshida (RNC), Yu Naya (RNC)

09:00 → 10:30 Opening and Plenary Session 1

Convener: Naruhiko Sakamoto (RNC)

09:00 Welcome and Logistics

Speakers: Hideto EN'YO(RNC), Naruhiko SAKAMOTO (RNC)

Slides TTC2018-RIKEN-Logi.ppt

09:15 Introduction and update from last collaboration meeting

Speaker: Hanse WEISE (DESY)

Slides TTC_Intro_HW.pptx

09:30 Overview on fabrication and treatment problems with QWR, HWR, Spoke

Plenary Talk-1

Speaker: Zachary CONWAY (ANL)

Slides Conway_TTC_20180626.pdf

10:00 Overview talks for niobium material and specification

Plenary Talk-2

Speaker: Ari PALCZEWSKI (JLAB)

Slides Overview_of_niobium_material_and_specification_in_SRF_palczewski.pptx

10:30 → 11:00 Coffee Break

11:00 → 12:30 WG-1: What are the performance limits for low beta resonators?

Conveners: Han Li (Uppsala University), Kazutaka Ozeki (RNC), Robert Laxdal (TRIUMF)

11:00 HWR/QWR test data – Rbcs/Ro

Speaker: Robert Laxdal (TRIUMF)

Slides TTC-QWR-laxdal.pdf TTC-QWR-laxdal.pptx

11:25 Optimizing TEM mode cavity performance

Speaker: Zack Conway (ANL)

Slides Conway_TEM_Performance_20180626.pdf

11:50 Cavity performance from FRIB

Speaker: Kenji Saito (FRIB)

Slides TTC_Meeting_RIKEN_201806_WG1__Saito_final.pptx

12:15 The MP and FE analysis for low beta SRF cavity of China ADS demo facility

Speaker: Cong Zhang (IMP)

Slides TTC-2018-6-26-Zhangcong.pptx

11:00 → 12:30 WG-2: How to improve the present specification for bulk Niobium?

Conveners: Akira Yamamoto (KEK and CERN), Claire Antoine (CEA), Sam Posen (FNAL)

11:00 Introduction

Speaker: Sam Posen (Fermilab)

Slides TTC_Intro_WG2_1st_Session.pptx

11:05 Performance in LCLS-II Cryomodules at Fermilab

Speaker: Sam Posen (Fermilab)

Slides Posen_TTCRiken_LCLSII_CMflux_v4.pptx

11:15 Doping Results as a Function of Different Material for LCLS-II

Speaker: Dan Gonnella (SLAC)

Slides lcls_ii_results_doping.pptx

11:35 Microscopic Investigation of Flux Expulsion in Production Grade Niobium

Speaker: Martina Martinello (FNAL)

Slides TTC2018_FE_Martinello_v4.pptx

11:55 Microstructural studies of Flux Expulsion and Entry in LCLS-II Material

Speakers: Pashupati Dhakal (Jefferson Lab), S. Balachandran (NMFL)

Slides Topical_TTC_Workshop_SB_6_25_2018_Japan_Final.pptx

12:10 First trial of temperature dependent EBSD measurement

Speaker: Taro Konomi (KEK)

Slides 20180624_EBSD_TTCatRIKEN.pptx

12:15 Discussion

Speaker: ALL

12:30 → 14:00 Lunch

14:00 → 15:30 WG-1: What are the performance limits for low beta resonators?

Conveners: Han Li (Uppsala University), Kazutaka Ozeki (RNC), Robert Laxdal (TRIUMF)

14:00 Issues on the prototyping of QWRs and HWRs

Speaker: Juwan Kim (RISP)

Slides 2018_TTC_KJW6.pptx

14:25 Surface processing and the first VT result of QWRs for the SRILAC

Speaker: Kazunari Yamada (RNC)

Slides TTC2018_yamada.pdf

14:50 HWR010 performance and performance recovery on beam-line in IMP

Speakers: He Yuan (IMP), ZHANG(IMP) Cong

Slides TTC2018_talk_YuanHe－２０１８／６／２６.pptx

15:15 Q recovery of the first prototype RIKEN QWR

Speaker: Naruhiko Sakamoto (RNC)

Slides TTC2018-RIKEN-QWRーsakamoto2.ppt

14:00 → 15:30 WG-2: How to improve the present specification for bulk Niobium?

Conveners: Akira Yamamoto (CERN/KEK), Claire Antoine (CEA), Sam Posen (FNAL)

14:00 The importance of recrystallization

Speaker: Claire Antoine (CEA)

Slides T_2018-06-27_TTC_meeting_Recrystallization.pptx

14:20 LG- and FG-Niobium SRF Cavity Fabrication and Test Results at KEK

Speaker: Takeshi Dohmae (KEK)

Slides LG-_and_FG-Niobium_SRF_Cavity_Fabrication_and_Test.pdf

14:40 Ingot Niobium for Efficient and Potentially Low Cost SRF Cavities

Speaker: Pashupati Dhakal (JLab)

Slides TTC_Reiken_2018_IngotNb.pptx

14:55 Experience with LG Niobium SRF Cavities

Speaker: Kenji Saito (FRIB)

Slides TTC_Meeting_RIKEN_201806_WG2__Saito.pptx

15:10 Discussion, and preparation for Vender’s session

Speakers: ALL, Akira Yamamoto (KEK and CERN)

Slides TTC-WG2-Preparation-180626.pptx

15:30 → 16:00 Coffee Break

16:00 → 17:30 WG-1: What are the performance limits for low beta resonators?

Conveners: Han Li (Uppsala University), Ozeki Kazutaka (RNC), Robert Laxdal (TRIUMF)

16:00 SSR Balloon Cavity – first test results

Speaker: Robert Laxdal (TRIUMF)

Slides TTC-balloon2-laxdal.pdf

16:25 Testing 325 MHz SSR1 cavities for PIP-II

Speaker: Alex Sukhanov (FNAL)

Slides SSR1-testing-TTC2018-Riken.pdf

16:50 First High Power Test of ESS Spoke Cavity at FREIA

Speaker: Han Li (Uppsala University)

Slides First_high_power_test_of_ESS_Spoke_cavity_at_FREIA_TTC.pdf First_high_power_test_of_ESS_Spoke_cavity_at_FREIA_TTC.pptx

17:15 Design study of spoke cavities for smaller multipacting effects

Speaker: Siwon JANG (Korea U.)

Slides Design_study_of_spoke_cavities_for_smaller_multipacting_effects.pdf

16:00 → 17:30 WG-2: How to improve the present specification for bulk Niobium?

Conveners: Akira Yamamoto (CERN/KEK), Claire Antoine (CEA), Sam Posen (FNAL)

16:00 Report from Tokyo-Denkai

Speaker: Hiroaki Umezawa (TD)

Slides 201806261TTC2018Umezawa.pptx

16:10 Report from ATI

Speaker: Philip O'larey (ATI)

Slides TTC-WG2-Preparation-180613a_-_ATI_R1.ppt

16:20 Response from OTIC

Speaker: HONGYUN Zhao (NINGXIA)

Slides TTC-WG2-respond_from_OTIC-180626.pptx

16:30 Report from HERAEUS

Speakers: Akira Yamamoto (KEK and CERN), B. Spaniol

Slides TTC_Riken_HERAEUS.pptx

16:40 Report from ULVAC

Speakers: S. Shinozawa(ULVAC), T. Nagata(ULVAC)

Slides TTC-WG2-Preparation__(ULVAC)_180626rev2.pptx

16:50 Report from CBMM

Speaker: Gustavo Abdo (CBMM)

Slides CBMM_Presentation_-_TTC_Meeting.pptx

17:00 Panel Discussion to reach consensus for specification improvements

Speaker: ALL

17:30 → 18:00 Break

18:00 → 19:00 CB meeting

Wednesday 27 June

09:00 → 10:30 Plenary Session 2

Convener: Wolf-Dietrich Moeller (DESY)

09:00 RIKEN overview and SRF activities

Plenary Talk-3

Speaker: Osamu Kamigaito (RNC)

Slides TTC2018_RIBF_Kamigaito_light.pdf

09:30 Lessons learned during module assembly and first cool-down test in FRIB

Plenary Talk-4

Speaker: Ting Xu (MSU)

Slides TTC2018_XU_FRIB.pdf

10:00 Recent theoretical and experimental progress in N2 doping and infusion

Plenary Talk-5

Speaker: Mattia Checchin (FNAL)

Slides TTC_2018_RIKEN.pptx

10:30 → 10:40 Group Photo

10:40 → 11:00 Coffee Break

11:00 → 12:30 WG-1: What are the performance limits for low beta resonators?

Conveners: Bob Laxdal (TRIUMF), Han Li (Uppsala University), Kazutaka Ozeki (RIKEN)

11:00 ODU - coaxial test resonators – first results

Speaker: Jean Delayen (ODU)

Slides JRD-TTC-June_2018.pdf JRD-TTC-June_2018.pptx

11:25 Coaxial test resonators for fundamental studies

Speaker: Robert Laxdal (TRIUMF)

Slides TTC-Coaxial-laxdal.pdf TTC-Coaxial-laxdal.pptx

11:50 Fabrication and frequency tuning of QWRs for the SRILAC

Speaker: Kenji Suda (RNC)

Slides TTC-ksuda-20180627-rev2.pdf

12:05 WG1 Summary Discussion

Speaker: WG1 Conveners

11:00 → 12:30 WG-2: How to improve the present specification for bulk Niobium?

Conveners: Akira Yamamoto (CERN/KEK), Claire Antoine (CEA), Sam Posen (FNAL)

11:00 LG Cavity Experience at DESY

Speaker: Jacek Sekutowicz (DESY)

Slides LG_experience_at_DESY_-_v4.pptx

11:20 Experimental Study of Flux Expulsion and Cold Work

Speaker: Sam Posen (FNAL)

Slides Posen_TTCRiken_LargeGrainFlux_v2.pptx

11:35 Eddy Current Scanning of Large Niobium Sheets

Speaker: Felix Schlander (ESS)

Slides TTC_Schlander.pptx

11:45 Effect of high Tantalum for cost-effective SRF Cavities

Speaker: Ganapati Myneni (ISOHIM)

Slides Myneni_TTC2018.pptx

12:00 Niobium RRR Dependence on SRF Cavity Performance

Speakers: Akira Yamamoto (KEK and CERN), Takayuki Kubo (KEK)

Slides 180626_kubo_ttc_riken_2.pdf

12:10 Discussion: How we may improve Nb specification?

Speaker: ALL

12:30 → 14:00 Lunch

14:00 → 15:30 WG-3: High Q and high gradient performance

Conveners: Alex Romanenko (FNAL), Kensei Umemori (KEK), Marc Wenskat (DESY)

14:00 Recent results of N-infusion at KEK/J-PARC

Speaker: Kensei Umemori (KEK)

Slides N-infusion_KEK_v1.pdf

14:18 Update on infusion studies at Jlab

Speaker: Pashupati Dhakal (JLab)

Slides Update_on_N-infusion_at_Jlab.pptx

14:36 Update on high-Q/high gradient research at Fermilab

Speaker: Anna Grassellino (FNAL)

Slides Anna-TTC.pptx

15:12 Status Update DESY

Speaker: Marc Wenskat (DESY)

Slides TTC_Wenskat.pptx

14:00 → 15:30 WG-4: Special applications of SRF cavities

Conveners: Ben Hall (HZB), Jacek Sekutowicz (DESY), Rama Calaga (CERN)

14:00 KEK SRF-gun Program

Speaker: Taro Konomi (KEK)

Slides 20180618_KEK_SRFGUN_TTCatRIKEN.pptx

14:15 DESY SRF-gun Program

Speaker: Reschke Detlef (DESY)

Slides SRF_Gun_Development_at_DESY_TTC_Riken.pptx

14:30 HZB SRF-gun Program

Speaker: Kühn Julius (HZB)

Slides The initial commissioning of the Superconducting RF (SRF) photoinjector is achieved with a Cu photocathode due to its robustness with respect to interactions with the SRF cavity of the injector. Here we present the preparation and characterization of a Cu photocathode plug and the diagnostics to insert the photocathode in the back wall of the SRF cavity and we discuss our experiences with the cathode / cavity interface region.

14:45 HZB SRF-gun Cluster

Speaker: Thorsten Kamps (HZB)

Slides 2018-06-27_WG4S1_TK_SRF_Guns_lessons_learned_pdf.pdf

15:00 PKU SRF-gun Program

Speaker: Kexin Liu (PKU)

Slides PKU_Kexin_Liu__talk（TTC_2018）.pdf

15:15 HZDR SRF-gun Program

Speaker: Jochen Teichert (HZDR)

Slides TTC_Meeting_RIKENWakoJapan_June2018_teichert.pptx

15:30 → 16:00 Coffee Break

16:00 → 17:30 WG-3: High Q and high gradient performance

Conveners: Alex Romanenko (FNAL), Kensei Umemori (KEK), Marc Wenskat (DESY)

16:00 Update on infusion studies at Cornell

Speaker: Peter Koufalis (Cornell)

Slides TTC_Low_Temp_Infusion.pptx

16:18 Latest insight from high-frequency cavity experiments

Speaker: Martina Martinello (FNAL)

Slides TTC2018_FreqDep_Martinello.pptx

16:36 Nitrogen Doping at PKU

Speaker: Jiankui Hao (PKU)

Slides N-doping_at_PKU_TTC2018_Riken.pptx

16:54 N-doping study at KEK

Speaker: Takafumi Okada (KEK)

Slides N_doping_study_at_KEK.pptx

17:12 Nb3Sn Results from FNAL

Speaker: Sam Posen (FNAL)

Slides Posen_TTCRiken_Nb3Sn2.pptx

16:00 → 17:30 WG-4: Special applications of SRF cavities

Conveners: Ben Hall (HZB), Jacek Sekutowicz (DESY), Rama Calaga (CERN)

16:00 SLAC SRF-gun Program

Speaker: Bruce Dunham (SLAC)

Slides SRF_Gun_-_SLAC.pptx

16:15 BNL SRF-gun Program

Speakers: Kentaro Mihara (BNL), LITVINENKO Vladimir (SBU)

Slides TTC_BNL_SRFgun.pdf

16:30 SRF Deflecting Cavity using Novel Fabrication Methods

Speaker: Robert Laxdal (TRIUMF)

Slides TTC-separator-laxdal.pdf TTC-separator-laxdal.pptx

16:45 CERN crab cavity comissioning experience

Speaker: Rama Calaga (CERN)

Slides TTCMeeting_22062018.pptx

17:00 HL-LHC Crab cavity HOM studies

Speaker: DELAYEN Jean (ODU)

Slides RFD-HOM-Damping-20180626.pptx

17:15 Discussion on topics of Session 1 and 2

17:30 → 18:00 Break

18:00 → 19:00 TB meeting

Thursday 28 June

09:00 → 10:30 WG-3: High Q and high gradient performance

Conveners: Alex Romanenko (FNAL), Kensei Umemori (KEK), Marc Wenskat (DESY)

09:00 Results of the direct cutout studies of a N-infused cavity

Speaker: A. Romanenko (FNAL)

Slides WG3_Romanenko_Ninfused_cutout.pptx

09:18 Sample analysis at KEK

Speaker: Taro Konomi (KEK)

Slides 20180625_Sample_analysis_at_KEK_TTCat_RIKEN.pptx

09:36 Surface study of nitrogen-infused Nb samples

Speaker: A. D. Pandey (DESY)

Slides N-infused-LGNb-TTC_Riken_2018_final.pptx

09:54 Sample Analysis - JLAB

Speaker: Pashupati Dhakal (JLab)

Slides Samples_Analysis_Jlab_final.pptx

10:12 Sample analysis - IHEP

Speaker: Chao Dong (IHEP)

Slides Sample_analysis_in_IHEP.pdf

09:00 → 10:30 WG-4: Special applications of SRF cavities

Conveners: Ben Hall (HZB), Jacek Sekutowicz (DESY), Rama Calaga (CERN)

09:00 Pulse Compression, VSR Project

Speaker: Benjamin Hall (HZB)

Slides Pulse_compression_and_Harmonic_SC_cavities_for_BESSY_VSR,_Ben_Hall.pptx

09:15 Harmonic SC cavity for BESSY-VSR at HZB:

Speaker: Benjamin Hall (HZB)

09:25 Harmonic SC cavity for Shanghai Light Source:

Speaker: Hongtao Hou (SINAP)

Slides Design_of_a_superconducting_third_harmonic_cavity_for_SSRF.ppt

09:40 HOM-based Diagnostics in SC Accelerating Cavities at FLASH and the European XFEL

Speaker: Alexey Sulimov (DESY)

Slides 2018.06.28_HOM-basedDiagnostics_TTCmeeting_Riken.pdf 2018.06.28_HOM-basedDiagnostics_TTCmeeting_Riken.pptx

09:55 Design of a 9-cell SC cavity for EUV light source at KEK

Speaker: Taro Konomi (KEK)

Slides 20180627_EUV_SC_TTCatRIKEN.pptx

10:10 SRF Quantum Computing

Speaker: A. Romanenko (FNAL)

Slides TTC_2018-WG4_Romanenko_SRF_Quantum.pptx

10:25 Discussion

10:30 → 11:00 Coffee Break

11:00 → 12:30 WG-3: High Q and high gradient performance

Conveners: Alex Romanenko (FNAL), Kensei Umemori (KEK), Marc Wenskat (DESY)

11:00 Thoretical insight on the non-uniform impurity distribution role in enhancing the maximum gradients

Speaker: V. NGAMPRUETIKORN (NEU)

Slides 2018-06-Superheating_field_TTC_RIKEN2018.pdf

11:18 Insight into superheating from recent muSR studies at TRIUMF

Speaker: Robert Laxdal (TRIUMF)

Slides TTC-June-muSR2-laxdal.pptx

11:36 Cornell Theory

Speakers: D. Liarto (Cornell), P. Koufalis (Cornell)

Slides TTC_Cornell_Theory.pptx

11:54 Open discussion

11:00 → 12:30 WG-4: Special applications of SRF cavities

Conveners: Ben Hall (HZB), Jacek Sekutowicz (DESY), Rama Calaga (CERN)

11:00 Electro-hydro forming & Future prospects

Speaker: Marco Garlasche (CERN)

Slides TTC_2018_ElectroHydroForming_MGarlasche_f.pptx

11:15 Plasma Cleaning R&D at FNAL

Speaker: Paolo Berrutti (FNAL)

Slides Plasma_Cleaning_FNAL_Berrutti_TTC.pdf

11:30 RFD cavity processing update

Speaker: Paolo Berrutti (FNAL)

Slides RFD_cavity_processing_update_Berrutti.pdf RFD_cavity_processing_update_Berrutti.pptx

11:40 EP of LHC crab cavities

Speaker: Morita Yoshiyuki (KEK)

Slides moritay

11:55 LCLS-II Cryomodule Transport Issues

Speaker: Chris Adolphsen (SLAC)

Slides Adolphsen_-_LCLS-II_CM_Transport_Issues.pptx

12:10 Developments Requested for Future Heavy Ion SRF LINACs from FRIB Experience

Speaker: Kenji Saito (FRIB)

Slides TTC_Meeting_RIKEN_201806_WG4__Saito.pptx

12:25 Discussion

12:30 → 14:00 Lunch

14:00 → 15:30 Plenary Session 3

Convener: Sergey Belomestnykh (FNAL)

14:00 Overview talks for Nb3Sn and other thin film technology

Plenary Talk-6

Speaker: Grigory Eremeev (Jlab)

Slides TTC_RIKEN_2018_grigory_22june2018.pptx

14:30 SC CH structure in Mainz/Frankfurt/Darmstadt

Plenary Talk-7

Speaker: Florian Dziuba (GSI)

Slides TTC_2018_Dziuba_final.pptx

15:00 Technical progress of crab cavity in fabrication and tests at CERN

Plenary Talk-8

Speaker: Marco Garlasche (CERN)

Slides TTC2018_MGarlasche_ProgressCrabFabricationCERN_f.pptx

15:30 → 16:00 Coffee Break

16:00 → 17:30 Hot Topics: Warm vacuum sections between low beta cryomodules

Conveners: Hiroshi Imao (RIKEN), Hiroyuki Ao (FRIB), Marcelo Juni Ferreira (ESS)

16:00 Cold trap in the beamline

Speaker: Robert Laxdal (TRIUMF)

Slides cold_traps_in_ISAC_-_laxdal.pptx

16:05 Application of NEG coating chamber beside the SRF cryomodule in cERL at KEK

Speaker: Hiroshi Sakai (KEK)

Slides cERL_warm_section_sakai_180628_final.pdf

16:10 Particle contamination in CEBAF beamline

Speaker: Rong-Li Geng (Jlab)

Slides TTC_2018_RIKEN_Geng.pptx

16:15 Design parameters for Warm sections and particle free NEG test for ESS/STFC and LCLS-II

Speaker: Marcelo Juni Ferreira (ESS)

Slides TESLA_RIKEN_MJF.pptx

16:20 FRIB beamline integration plan

Speaker: Hiroyuki Ao (FRIB)

Slides FRIB_Beamline_Integration_Plan.pptx

16:25 Development of NEG-based differential pumping system for SRILAC at RIBF

Speaker: Hiroshi Imao (RNC)

Slides imao

16:30 Hot Topic discussions

Slides TTC2018_Hot_Topic.pptx

17:30 → 18:00 Break

18:00 → 20:00 Dinner at RIKEN Cafeteria

Friday 29 June

09:00 → 09:15 WG1 Summary

Speaker: WG-1 conveners

Slides Summary_of_WG1_-_laxdal2.pptx

09:15 → 09:30 WG2 Summary

Speaker: WG-2 conveners

Slides Summary-WG2-TTC-Riken-Draft-v3.pptx

09:30 → 09:45 WG3 Summary

Speaker: WG-3 conveners

Slides WG3_Summary.pptx

09:45 → 10:00 WG4 Summary

Speaker: WG-4 conveners

Slides WG4_summary.pptx

10:00 → 10:15 TB report

Speaker: Eiji Kako (KEK)

Slides Kako,_Report_of_TTC-TB_meeting_at_RIKEN,_2018_June_27.pptx

10:15 → 10:30 CB report

Speaker: Hans Weise (DESY)

Slides TTC_CB_Summary_HW.pptx

10:30 → 11:00 Coffee Break

11:00 → 12:30 Special Seminar Session

Convener: Eiji Kako (KEK)

11:00 Industrial applications in compact-ERL at KEK: EUV light source for semiconductor lithography, Mo-99 production for medical application, and Non-destructive inspection for nuclear security system

Speaker: Hiroshi Kawata (KEK)

Slides Industrial_Applications_incompact-ERL_at_KEK.pptx

11:45 Next generation high intensity neutron source at QST-Rokkasho; A-FNS

Speaker: Keishi Sakamoto (QST)

Slides TTC_Sakamoto.pptx

12:30 → 13:00 Closing

13:00 → 14:30 Lunch

14:30 → 17:30 Lab Tour