Name: TTC Meeting at DESY, March 24 - 27, 2014
Start: 2014-03-24T08:00:00+01:00
End: 2014-03-27T13:00:00+01:00
Location: DESY Hamburg

TTC Meeting at DESY, March 24 - 27, 2014

from Monday 24 March 2014 (08:00) to Thursday 27 March 2014 (13:00)

Monday 24 March 2014

08:30

08:30 - 09:00
Room: Auditorium Bldg. 5
09:00
09:00 - 13:00
Room: Auditorium Bldg. 5
Contributions

09:00 Introduction and update since last collaboration meeting - Olivier Napoly (CEA-Saclay)

09:20 DESY Welcome & logistics - Hans Weise (DESY)

09:30 CEBAF Upgrade Experience - Drury Mike (JLAB)

10:00 First Beam Recirculation and Energy Recovery in Compact-ERL at KEK - Shogo Sakanaka (KEK)

11:00 ESS SRF - Christine Darve (ESS)

11:30 European XFEL Accelerator Module Assembly - Stéphane BERRY (CEA-Saclay)

12:00 FLASH Operational Experience - Siegfried Schreiber (DESY)
13:00 lunch
lunch
13:00 - 14:00
14:00
14:00 - 17:00
Room: Auditorium Blg. 5
Contributions

14:00 Niobium materials (FG/LG), impurities, etc. - Peter Kneisel (Jefferson Lab)

14:20 Optical inspection by OBACHT (DESY) and other inspection elsewhere from other laboratories - Aliaksandr Navitski (Deutsches Elektronen Synchrotron)

14:40 Cavity and module testing for XFEL at DESY - Jacek Swierblewski (MKS 1)

15:00 Observation that fast cooldown maintains high Q0 better than slow cooldown - Anna Grasselino (FNAL)

15:40 Difficulties in fabrication, preparation and comissioning of input couplers - Jiyuan Zhai (IHEP)

16:00 Split quadrupole magnet design for ILC/KEK-STF - Vladimir Kashikhin (FNAL)

16:20 Limits for peak fields and gradient in low-beta cavities for high intensity projects - Yuan He (Institute of Modern Physics, CAS)

16:40 Recent development in spoke resonators - Guillaume Olry
Tuesday 25 March 2014
08:30
08:30 - 12:30
Room: Bldg 1b - 4a/b (100 seats)
Contributions

08:30 KEK experiences in SCRF cavity fabrication, with focusing on the EBW work parameterization and optimization - Kensei Umemori (KEK)

08:50 What he companies considered as “hard to achieve” of our specs and request: provocative discussion - Giorgio Corniani (Ettore Zanon s.p.a.) Michael Pekeler (RI Research Instruments GmbH)

09:20 Successful development of new fabrication technique using based on laser welding, for SCRF cavities - Results and path ahead. - Prashant khare (Raja Ramanna Centre for Advanced Technology)

09:40 Typical problems with EBW welding observed with OBACHT - Aliaksandr Navitski (Deutsches Elektronen Synchrotron)

09:55 PED approach for 3.9 GHz XFEL cavities. - Massimiliano Moretti (INFN Milan - LASA)

10:50 Statistics on EP treatment of EXFEL cavities in series production - Michela Rizzi (Ettore Zanon SpA)

11:10 XFEL Series Cavity fabrication – Documentation issues - Jens Iversen (DESY - Deutsches Elektronen Synchrotron)

11:30 RF Aspects of Quality Control for the European-XFEL Cavities - Alexey Sulimov (DESY)

11:50 Studies of frequency variation with EP treatments performed by EZ - Ambra Gresele (E.Zanon)

12:10 Current status of Dubna-Minsk common activity on manufacturing of elliptical Nb cavity - Nikolay AZARYAN (JINR)
08:30 - 12:30
Room: Bldg 3 - SR BAH1 (48 seats)
Contributions

08:30 Copper plating specifications, XFEL, LCLS-II, KEK, ERL Cornell, CERN - Wolf-Dietrich Möller (DESY)

08:45 Copper plating methods - Sergio Calatroni (CERN)

08:55 Thermal simulations, pulsed CW, XFEL, others - Denis Kostin (DESY)

09:05 Investigation methods, destructive and non-destructive - Alexey Ermakov (DESY)

09:15 Real defects, examples, classification at XFEL - Walid kaabi (LAL)

09:25 Experience with defects in copper plating at HTS (SLAC/CPI/FNAL ILC collaboration) - Kenneth Premo (Fermilab)

09:35 Method and experience of copper plating at Toshiba - Osamu Yushiro (Toshiba)

09:45 Copper plating issues at Cornell - Vadim Veshcherevich (Cornell Univrsity)

09:55 QC during mass production - Discussion - Wolf-Dietrich Möller (DESY)

10:40 XFEL coupler - Walid kaabi (LAL)

10:50 KEK-cERL, ML coupler - Hiroshi Sakai (KEK)

11:00 TTF3-SLAC/FNAL coupler - Kenneth Premo (Fermilab)

11:10 SPIRAL2 coupler - Yolanda GOMEZ MARTINEZ (LPSC / IN2P3)

11:20 What is the best preparation procedure? Discussion... - Eiji Kako (KEK)

11:30 Coupler design: TTF-3 coupler modification for LCLS-II CW - Nikolay Solyak (Fermilab)

12:00 CW coupler for BerlinPro/HZB - Vasim Khan (Helmholtz Zentrum Berlin)

12:10 CW coupler for Cornell ERL - Vadim Veshcherevich (Cornell Univrsity)

12:20 ESS coupler design - Stephen Molloy (ESS)
08:30 - 12:30
Room: Bldg. 3 - BAH2 (26 seats)
Contributions

08:30 SNS High Intensity Experience - Sang-ho Kim (Oak Ridge National Laboratory)

08:45 ESS low beta elliptical - Stephen Molloy

09:00 IMP experience - Yuan He (Institute of Modern Physics, CAS)

09:15 Cryomodule Design - Yuqin Wan

09:30 HIE-Isolde - Alban Sublet (CERN)

09:45 Discussion

10:30 Discussion . spoke material: IPN - Guillaume Olry (IPN)

10:45 Discussion . spoke material: FNAL - Allan Rowe (Fermilab)

11:00 Discussion - multipacting simulation/experience: IPN - David Longuevergne (Institut de Physique Nucléaire d'Orsay)

11:15 Discussion - multipacting simulation/experience: FNAL - Dmitri Sergatskov (Fermilab) Timergali Khabiboulline (Fermilab)

11:30 Discussion - low frequency residual resistance: IPN - David Longuevergne (Institut de Physique Nucléaire d'Orsay)

11:45 Discussion - low frequency residual resistance: FNAL - Anna Grassellino (FNAL)
12:30 lunch break
lunch break
12:30 - 13:30
13:30
13:30 - 18:10
Room: Bldg 1b - 4a (41 seats)
Contributions

13:30 Set of discussion guiding questions - Waldemar Singer (DESY)

13:35 Experiences to large scale production of Nb cavity material for CEBAF Upgrade and SNS - Charles Reece (Jefferson Lab)

13:45 Experiences to large scale production of Nb cavity material for European XFEL - Waldemar Singer (DESY)

14:00 Comparison LG-FG Nb properties - Peter Kneisel (Jefferson Lab)

14:10 LG vs FG (FNAL data, and DESY data analysis from Alex M) - Anna Grassellino (FNAL)

14:20 Foreign material inclusions in the Nb cavity material for European XFEL - Xenia Singer (DESY)

14:30 Analysis of surface damage layer in cavity Nb - Claire Antoine (CEA)

14:40 Discussion of material requirement specifications

15:00 Topographic contribution to non-linearly rf losses: FG BCP cf. EP - Charles Reece (Jefferson Lab)

15:05 Clean heat treatment studies for high Q0 – JLab - Ciovati (JLAB) Peter Kneisel (Jefferson Lab)

15:15 Macro and nanohydrides for different surface processing (data from Alex R and Yulia T) - Anna Grassellino (FNAL)

15:50 SIMS and muSR data for mfp nitrogen baked vs standard processing - Anna Grassellino (FNAL)

16:00 Material activities towards high Qo @ HZB - Oliver Kugeler (Helmholtz Zentrum Berlin)

16:05 Material activities towards high Qo with HT-N @ JLab - Charles Reece (Jefferson Lab)

16:15 Material activities towards high Qo @ DESY - Ricarda Laasch (DESY)

16:20 Material activities towards high Qo @ DESY - Jacek Sekutowicz (DESY)

16:25 Q change with quench in NbCu clad cavities - Waldemar Singer (DESY)

16:30 General Discussion of material influence on Q0

16:50 Transition to join WG8 17:00-18:00 for joint discussion of test condition influence on high Q0, e.g. ambient magnetic field and cooldown rate.

17:00 Joint Session with WG8
13:30 - 18:00
Room: Bldg 1b - 4b (52 seats)
Contributions

13:30 • Modifications for CW operation for LCLS-II - Tom Peterson (FNAL) Yuriy Orlov (FNAL)

13:50 • French light Source Lunex - Massamba DIOP (Synchrotron SOLEIL)

14:10 • Experience commissioning CW daresbury CM - Alan Wheelhouse (ASTeC/STFC)

14:30 HZB experience with CW operation at the HoBiCaT test facility (A. Neumann - Helmhotz Berlin) - Axel Neumann (Scientist, SRF)

14:50 Cornell CW cryomodule, including module design for CW operation, operational experience, tuner experience … - Georg Hoffstaetter (Cornell University)

15:10 Discussion

16:00 Improvement of cavity Q0 by so called thermal cycling - Julia Vogt (HZB)

16:20 XFEL experience with mass production assembly at Saclay - Catherine MADEC (CEA-SAclay) Olivier Napoly (CEA-Saclay) Stéphane BERRY (CEA-Saclay)

16:40 FNAL experience assembling CM2 - Tug Arkan (Fermilab)

17:00 XFEL cryomodule transportation: an update since the Beijing TTC meeting - Kay Jensch (DESY) Olaf Sawlanski (DESY) Serena Barbanotti (DESY)

17:20 The certification of the XFEL cold linac for operation - Serena Barbanotti

17:40 Discussion
13:30 - 18:00
Room: AMTF (50 seats)
Contributions

13:30 Radiation measurement and comparison between VT/CM tests

14:30 Components and methods of Cavity/CM tests

15:50 Discussion

16:45 Modification to test programs for high Q0 (partially joint with WG2)
18:00
18:00 - 20:00
Room: Building 1, Seminar Room 1
Contributions

18:00 Collaboration Board
Wednesday 26 March 2014
08:30
08:30 - 12:30
Room: Bldg. 1b - 4a/b (100 seats)
Contributions

08:30 Introduction Industrialization of infrastructures for CAV preparation

08:35 Industrialization of Electro polishing - view and experiences from Institute sides DESY - Nicolai Steinhau-Kuehl (DESY)

08:45 Experience with installing an EP system at AES - Allan Rowe (Fermilab)

08:55 View and experience from industry (E.Zanon) - Michela Rizzi (Ettore Zanon SpA)

09:05 New EP systems and parameters: KEK - SHIGEKI KATO (KEK)

09:15 New EP systems and parameters: CEA - Fabien Eozenou (CEA)

09:25 New EP systems and parameters: FNAL Bi polar EP - Allan Rowe (Fermilab)

09:35 Infrastructure for industrial cavity production - Giorgio Corniani (Ettore Zanon s.p.a.)

09:47 JLAB equipment for retreatments and studies on infrastructures - Peter Kneisel (J lab)

09:54 CERN’s new 2K infrastructure - Karl-Martin SCHIRM (CERN)

10:01 XFEL Cavity Retreatment+ DESY infrastructure - Marco Schalwat (DESY Hamburg)

10:08 “ILC-HiGrade program at DESY: Some infrastructure for cavities repair and retreatment” - Aliaksandr Navitski (Deutsches Elektronen Synchrotron)

10:15 Vacuum issues usage of slow pumping slow venting - Dario Rizzetto (E.Zanon)

10:25 Discussion on application of EP for repair --global once or are local once possible to avoid changing cavity length

11:00 Prep steps and Quality control at JLAB - Peter Kneisel (J lab)

11:08 Discussion: Are there new/ Improved methods of preparation QC?

11:10 Results from XFEL cavity production and retreatments - Detlef Reschke (DESY)

11:20 Analysis of XFEL QC data in respect of success rate - Laura Monaco (INFN)

11:46 Discussion: Are we checking enough and are they the right parameters?

11:56 Discussion: Which additional parameters are under development and which one could be / should be checked in addition?

12:06 Discussions on New methods of cavity preparation techniques
08:30 - 12:30
Room: Bldg. 55 (25 seats)
Contributions

08:35 Experience with the production of SC XFEL magnets - Fernando Toral (CIEMAT)

09:00 Results from the cold and warm tests of the XFEL SC Magnet - Michal Duda (IFJ PAN)

09:20 Current Leads for the XFEL SC Magnets - Heiner Brueck (DESY, MKS)

09:30 Assembly of SC splittable quadrupole with cavitiy string at KEK-STF2 - Akira Yamamoto (KEK)

09:50 Design for the splittable SC quadrupole magnets at LCLS-II (proposed) - Vladimir Kashikhin (Fermilab)

10:10 Discussion

10:45 Visit to the measurement hall and discussions

11:00 Introduction: Magnetic shielding session - Mika Masuzawa (KEK)

11:05 Fringe Fields near SRF cavities - Juliette Plouin (CEA-Saclay)

11:20 Effects of the ambient magnetic field on cavity performance

11:35 Effects of the magnetic field on cavity during operation - Dmitri Sergatskov (Fermilab)

11:50 Strategies for choosing the shielding material suited for large scale produciton - Kiyosumi Tsuchiya (KEK) Olivier Napoly (CEA-Saclay)

12:20 Summary for WG7 - Heiner Brueck (DESY, MKS) Mika Masuzawa (KEK)
08:30 - 10:30
Room: AMTF (50 seats)
Contributions

08:30 Design, setup and commissioning of the AMTF - Bernd Petersen (DESY)

08:40 The 3.9 GHz vertical test stand at INFN Milan and the 3.9 GHz horizontal test stand at the AMTF - Daniele Sertore (INFN Milano - LASA)

08:50 Cavity Testing at J-Lab - Ari Palczewski (Jefferson National Laboratory)

09:00 Module Testing at J-Lab - Drury Michael (JLAB)

09:10 News from vertical and horizontal test infrastructure (HoBiCaT) and test program at HZB - Oliver Kugeler (Helmholtz Zentrum Berlin)

09:20 Test infrastructure and test programs for CM2 at FNAL - Camille Ginsburg (Fermilab) Timergali Khabiboulline (Fermilab)

09:30 Test infrastructure and test programs at KEK-STF - Yasuchika Yamamoto (KEK)

09:50 SRF test infrastructure and test programs at CERN - Mathieu Therasse (CERN)

10:00 SRF test infrastructure and test programs at Cornell - Georg Hoffstaetter (Cornell University)

10:10 Discussion
10:30

10:30 - 11:00
Room: AMTF (50 seats)
11:00
11:00 - 12:30
Room: AMTF (50 seats)
Contributions

11:00 Expected testing of the ESS SRF cavities - Christine Darve (European Spallation Source)

11:10 Experience at CEBAF and recovery by He processing (t.b.c)

11:20 Experience at FLASH - Siegfried Schreiber (DESY)

11:30 Beam operation experience at STF-Quantum beam project - Yasuchika Yamamoto (KEK)

11:40 Beam operation experience at cERL - Hiroshi Sakai (KEK)

11:50 Beam operation experience at Cornell ERL 2-cell injector - Georg Hoffstaetter (Cornell University)

12:00 KEK long term operation & experience - Kensei Umemori (KEK)

12:10 Discussion
12:30 lunch break
lunch break
12:30 - 13:30
13:30
13:30 - 14:30
Room: Blg.1 / SR1
Contributions

13:30 Technical Board
14:30
14:30 - 17:30
Room: AMTF
Contributions

14:30 AMTF & XFEL Tours (please check detailed view)
14:30 - 17:30
Room: Bldg 1b / 4a/b
Contributions

14:30 Summary & Report Writing
17:30
17:30 - 18:30
Room: AMTF
Contributions

17:30 XFEL Tour for conveners
19:00 Dinner
Dinner
19:00 - 22:00
Room: DESY canteen annex
Thursday 27 March 2014
09:00
09:00 - 13:00
Room: Auditorium
Contributions

09:00 WG1 Summary - Akira Yamamoto (KEK) Paolo Michelato (INFN - LASA)

09:15 WG6 Summary - Sergio Calatroni (CERN) Yuan He (Institute of Modern Physics, CAS)

09:30 WG3 Summary - Karl-Martin SCHIRM (CERN) axel matheisen (DESY)

09:45 WG4 Summary - Eiji Kako (KEK) Wolf-Dietrich Möller (DESY)

10:00 WG5 Summary - Catherine MADEC (CEA-SAclay) Tom Peterson (FNAL)

10:15 WG2 Summary - Charles Reece (Jefferson Lab) Waldemar Singer (DESY)

11:00 WG7 Summary - Heiner Brueck (DESY, MKS) Mika Masuzawa (KEK)

11:15 WG8 Summary - Camille Ginsburg (Fermilab) Detlef Reschke (DESY) Elmar Vogel (DESY) Kensei Umemori (KEK)

11:30 TB Report - Eiji Kako (KEK)

11:45 LCLS-II Overview - SRF related - Marc Ross (SLAC)

12:10 TTC High Q0 Working Group - Report - Charles Reece (Jefferson Lab)

12:30 CB Report - Olivier Napoly (CEA-Saclay)

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