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TTC 2020

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500/1-001 - Main Auditorium (CERN)

500/1-001 - Main Auditorium

CERN

Several rooms
400
Show room on map
Frank Gerigk (CERN), Sergio Calatroni (CERN), Walter Venturini Delsolaro (CERN)
Description

Newsflash: in view of the evolving situation with the novel coronavirus outbreak please find the latest CERN recommendations along with further links on this topic here: https://home.cern/news/official-news/cern/coronavirus-recommendations  

See also the recommendations, which were issued for UN staff members: https://hr.un.org/page/novel-coronavirus-2019-ncov

Introduction

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 TTC meeting hosted by CERN.

General time table

 

Location of rooms

lunch is not organised but can be taken at the CERN restaurant

 

Booking form TTC Workshop.docx
Conference-photo.jpeg
Edelweiss- Workshop dinner.pdf
map.png
TTC 2020 poster.pdf
VirusPrevention-CERN.pdf
VirusPrevention-CERN.pptx
Participants
  • Adrien Bouygues
  • Akihiro Kikuchi
  • Akira Miyazaki
  • Akira Yamamoto
  • Alan Wheelhouse
  • Alban Sublet
  • Aleksandra Bartkowska
  • Alexander Navitski
  • Alexander Romanenko
  • Alexey Ermakov
  • Alick Macpherson
  • Ambra Gresele
  • Andrew Burrill
  • Andrew May
  • Anne-Marie Valente-Feliciano
  • Anton Ivanov
  • Antti Vaaranta
  • Arely Cano
  • ari palczewski
  • Bertrand Baudouy
  • Bhagat-Taaj Sian
  • Bianca Giaccone
  • Carlo Pagani
  • Catherine MADEC
  • Chao Dong
  • Charles Reece
  • chen luo
  • Christian ARCAMBAL
  • Claire Antoine
  • Claude Marchand
  • Claude Van Daele
  • Cristian Pira
  • Dan Gonnella
  • Daniel Bafia
  • Daniel Trompetter
  • Daniel Turner
  • Dariusz Bocian
  • David Longuevergne
  • David Smekens
  • Denis Kostin
  • Detlef Reschke
  • Dirk Lützenkirchen-Hecht
  • Dorothea Fonnesu
  • Douglas Holmes
  • Edward Thoeng
  • Eiji Kako
  • Emmy Sharples
  • Enrico Cenni
  • Eric Montesinos
  • Erk JENSEN
  • Fabien EOZENOU
  • Fabio Avino
  • Franck Peauger
  • Frank Gerigk
  • Gerda Neyens
  • Giovanna Vandoni
  • Grigory Eremeev
  • Guillaume Devanz
  • Guillaume Rosaz
  • Hans Weise
  • Hao Guo
  • Hassen JENHANI
  • Hiroaki Umezawa
  • Hiroki Okuno
  • Hiroshi Sakai
  • Hongtao Hou
  • James Mitchell
  • Jan-Hendrik Thie
  • jean-pierre Pollina
  • Jens Iversen
  • Joern Schaffran
  • Jonas Christian Wolff
  • Jonathan Angle
  • Julien Branlard
  • Juliette Plouin
  • Karol Kasprzak
  • Katarzyna Turaj
  • Katherine Wilson
  • Kazunari Yamada
  • Kazutaka Ozeki
  • Keitaro Kondo
  • Kellen McGee
  • Kenji Suda
  • Kensei Umemori
  • Kevin Smith
  • Kyle Branigan
  • Laura Monaco
  • Laura Popielarski
  • Lea Steder
  • Leonel Ferreira
  • Lorena Vega Cid
  • Lucia Lain Amador
  • Lukasz Piotr Krzempek
  • Manfred Tonutti
  • Marc Wenskat
  • Marco Garlasche
  • Mark Pendleton
  • Martina Martinello
  • Marton Major
  • Masao Irikura
  • Massamba Diop
  • Mateusz Wiencek
  • Mattia Checchin
  • Mauro Taborelli
  • Michael Kelly
  • Michele Bertucci
  • Mircea Stirbet
  • Mohammed Fouaidy
  • Myeun Kwon
  • Naruhiko Sakamoto
  • Nicholas Shipman
  • Nicholas Walker
  • Nicolas BAZIN
  • Nuno Elias
  • Nuria Valverde Alonso
  • Ofelia Capatina
  • Oliver Kugeler
  • olivier brunner
  • Olivier Napoly
  • Paolo Chiggiato
  • paolo pierini
  • Pashupati Dhakal
  • Patricia Duchesne
  • Paul Smith
  • Paulina Kulyavtsev
  • Peng Sha
  • Peter McIntosh
  • Peter Oving
  • Phil Atkinson
  • Philipp Kolb
  • Purushottam Shrivastava
  • Qiong Wu
  • Ram Dhuley
  • Rama Calaga
  • Ricardo Monroy-Villa
  • Riccardo Zennaro
  • Richard Stanek
  • Robert Laxdal
  • Robert Nietubyc
  • Robert Rimmer
  • Robert Zierold
  • Robin FERDINAND
  • Roger Ruber
  • Romain Gerard
  • Rong-Li Geng
  • Ryan Porter
  • Said Atieh
  • Sam Posen
  • Sangbeen Lee
  • Sanghoon Kim
  • Sebastian Aderhold
  • Sebastian Keckert
  • Sergey Belomestnykh
  • Sergio Calatroni
  • Serhan Tufanli
  • Shin MICHIZONO
  • Shreyas Balachandran
  • Silvia Verdú-Andrés
  • Silvia Zorzetti
  • Stephen Einarson
  • Steven Anlage
  • Stéphane BERRY
  • Stéphane Bethuys
  • Stéphanie Fernandez
  • Suitbert Ramberger
  • Sven Sievers
  • Takashi Ebisawa
  • Takeshi Dohmae
  • Teng Tan
  • Thibaut Richard
  • Thomas Proslier
  • Tobias Junginger
  • Tom Powers
  • Tongming Huang
  • Torsten Koettig
  • Tug Arkan
  • Valentin Gerbet
  • Vanessa Garcia Diaz
  • Walter Venturini Delsolaro
  • WENCAN XU
  • Wolf-Dietrich Moeller
  • Wolfgang Hees
  • Yasuchika Yamamoto
  • Yuefeng Liu
  • Yuriy Pischalnikov
  • Zachary Conway
  • Zeming Sun
TTC 2020 Administrative Support
  • Tuesday, 4 February
    • 1
      On-site Registration 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
    • Plenary: Welcome, Plenary talk 1, Plenary talk 2 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map

      Welcome, Plenary talk 1, Plenary talk 2

      Conveners: Frank Gerigk (CERN), Robert Edward Laxdal
    • 10:30
      Coffee Break 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
    • Working Group Session: WG1 _Low/Mid T Bakes + N-treatments 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
      Conveners: Ari Palczewski (JLAB), Dr Kensei Umemori (KEK), Marc Wenskat (Deutsches Elektronen-Synchrotron DESY)
    • Working Group Session: WG2_Couplers and Auxiliaries 503/1-001 - Council Chamber

      503/1-001 - Council Chamber

      CERN

      162
      Show room on map
      Conveners: Eric Montesinos (CERN), Naruhiko Sakamoto (RIKEN), Sang Hoon Kim (FRIB)
      • 12
        Fundamental studies for power coupler in KEK (10'+8')

        Abstract:
        KEK is concentrating on studies of copper plating and ceramic from 2016. Recently, in study of copper plating, it became clear that copper-sulfate is much better than copper-pyrophosphate by analysis of RRR and grain size for each. On the other hand, KEK constructed measurement system of secondary electron emission for ceramic, and have been measured many samples provided from five vendors including TiN and Cr2O3 coating. In this talk, these results will be presented, and discussed.

        Provocative topic:
        Copper plating by sulfate and pyrophosphate, secondary electron emission of ceramic incl. coating

        Speaker: Yasuchika Yamamoto (KEK)
        Fundamental_studies_for_power_coupler_in_KEK_04Feb2020.pdf
        Fundamental_studies_for_power_coupler_in_KEK_04Feb2020.pdf
        Fundamental_studies_for_power_coupler_in_KEK_04Feb2020.pptx
      • 13
        R&D Toward a 500 kW CW High Power Coupler with Variable Qext (10'+8')

        Abstract:
        The SRF cavities for the electron storage ring of an Electron-Ion Collider (EIC) to be built at BNL require CW high power couplers with variable Qext. The approach taken to develop this coupler was to leverage an existing 500 kW CW fixed coupler design, and implement the coupling adjustment by means of a waveguide tuner section adjacent to the coupler. This talk will briefly present the R&D approach and progress to date including design choices, fabrication and results of the initial high power testing of the couplers which were recently completed, and plans of high power couplers for BNL EIC applications.

        Provocative Topics:
        High power coupler adjustment via waveguide tuner with a fixed coupler; challenging performance requirements for the BNL EIC electron storage ring SRF system; high power test results with lessons learned and plan moving forward.

        Speaker: Wencan Xu
        R&D Toward a 500 kW CW High Power Coupler with Variable Qext_final.pdf
        R&D Toward a 500 kW CW High Power Coupler with Variable Qext_final.pptx
      • 14
        Qext studies for the 1.5 GHz BESSY VSR couplers (10'+8')

        Abstract:
        The 1.5 GHz couplers for the high-current CW variable pulse-length demonstrator in BESSY II, are now out in the process of being manufactured. These couplers are designed to provide variable coupling, with the initial design brief that their Qext range was from 6x106 to 6x107. Through the process of design development it was found that a full order of magnitude range could not be reached. In this talk, the reason behind the reduced range is discussed and studies are presented detailing how the final coupling range was chosen. Since the couplers do not exist on their own but as part of a larger system, the external effects on the Qext as a result of mechanical constraints in the module will also be presented, to show how the full system is interlinked.

        Provocative topics:
        That is an interesting term. Essentially, how mechanical constraints from the overall SRF system, have more effect on the design than the RF, however I am not sure whether that is provocative or new to anyone who designs couplers.

        Speaker: Emmy Sharples
        EmmysharplesTTC2020.pdf
        EmmysharplesTTC2020.pptx
      • 15
        Our experiences and troubles on FPCs for RIKEN QWR (10'+8')

        Abstract:
        In RIKEN, ten QWRs and ten FPCs were produced.
        The rinsings and RF processes for ten FPCs seemed to have finished without any trouble.
        Three CMs were assembled and installed on the beam line.
        After about two months of evacuation of CMs, a leakage from vacuum window broke out at one of the FPCs.
        Because a basal treatment is difficult, we evacuate the FPC from air side of the window to perform excitation test of QWRs.
        The effects of leakage on other QWRs in same CM are being examined.
        A couse of leakage is unspecified for now.

        Speaker: Kazutaka Ozeki (RIKEN)
        TTC2020ozeki.pdf
      • 16
        Special design considerations of high power input couplers for TEM-type superconducting cavities (10'+8')

        Abstract:
        High power input couplers of TEM-type superconducting cavities (QWR, HWR, Spoke) usually locate at the cavity body instead of beam pipe, which requests special design considerations in addition to the conventional design criteria. Firstly, the ceramic window may be damaged by field emission (FE) induced electrons. Thus it’s important to ensure no FE electrons can arrive at the ceramic surface by either optimizing the window position or blocking the electrons with specially designed shielding. Secondly, the cavity field will leak into the coupler and cause excessive heating, which may result in substantial dynamic heat load, even cavity quench. Therefore dedicated rf-thermal simulation should be done to reduce the filed leakage by optimizing the coupler position and the height of the coupler port. In addition, compact design to realize clean assembly and to minimize the contamination will be discussed.

        Speaker: Tongming Huang (IHEP)
        Special design considerations of high power input couplers for TEM-type superconducting cavities_with voiceover.pdf
        Special design considerations of high power input couplers for TEM-type superconducting cavities_with voiceover.pptx
    • 12:30
      Lunch
    • Working Group Session: WG1_Low/Mid T Bakes + N-treatments 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
      Conveners: Ari Palczewski (Thomas Jefferson National Accelerator Facility), Kensei Umemori (KEK), Marc Wenskat (Deutsches Elektronen-Synchrotron DESY)
    • Working Group Session: WG2_Couplers and Auxiliaries 503/1-001 - Council Chamber

      503/1-001 - Council Chamber

      CERN

      162
      Show room on map
      Conveners: Eric Montesinos (CERN), Naruhiko Sakamoto (RIKEN), Sang Hoon Kim (FRIB)
      • 22
        Update on FPC progress at DESY (10'+8')

        ABSTRACT

        A Fundamental Power Coupler (FPC) is one of the key subsystems of the SRF accelerator and does need to be addressed in same way, as the SRF cavities are. Currently most of the FPCs for the SRF cavities at DESY are installed in the Eu-XFEL linac (~800), but this is not the only application. The FLASH linac will undergo the update soon
        and CW operation of an SRF accelerator is under study. We plan also a refresh of our SRF testing facility with a new FPC test-stand.
        All these topics will be presented in short and discussed.

        Provocative topics:
        1. CW module test - how far can a standart E-XFEL module be used with CW operation - limits/problems
        2. Coupler test for FPC intended for CW operation - is it needed ? lower voltages with higher DF...

        Speaker: Denis Kostin (DESY)
        TTC2020_DKostin.pptx
      • 23
        Experience with FPCs for the LCLS-II project at JLAB (10'+8')

        Abstract:
        The LCLS II project make used of use of state of the art superconducting cryo-modules RF powered in CW mode by dedicated TTF3 style FPCs. The talk will provide details related with LCLS-II cryo-module production experience at JLAB using this type of couplers.

        Provocative topic:
        The modified TTF3 is a complex coupler, I wished it was simpler. Will this coupler demonstrate similar performances as we had on power couplers sustaining operation on LEP, LHC or SNS machines?

        Speaker: Mircea Stirbet (Jefferson Laboratory)
        MStirbet Experience with FPCs for LCLS II project at JLAB.pdf
        MStirbet Experience with FPCs for LCLS II project at JLAB.pptx
      • 24
        Test bench conditioning of the ESS couplers for elliptical cavities (10'+8')

        Abstract:
        After a short presentation of the architecture and features of the ESS couplers used with elliptical cavities, we will present how we perform the conditioning of the couplers at CEA Saclay and the different diagnostic elements used to check the correct working of the couplers. We will discuss on the consequences of a “bad” TiN coating on the coupler performances during the conditioning.

        Provocative topics:
        Do we install too many diagnostic elements on the couplers during the conditioning?

        Speaker: Christian Arcambal (CEA)
        TTC_meeting_2020_arcambal.pdf
        TTC_meeting_2020_arcambal.pptx
      • 25
        High power testing of ESS FPCs on the elliptical cavities cryomodules (10'+8')

        Abstract:
        We discuss the behavior of the 1.2 MW power couplers on the ESS medium beta elliptical cavities cryomodule during high power test in the Saclay test bunker. We go through three test conditions, room temperature, cold with detuned cavity and with the nominal case of tuned cavities at 2 Kelvin.

        Provocative topic:
        Do we condition FPC enough?

        Speaker: Guillaume Devanz (CEA)
        TTC2020_WGtalk_GD.pdf
      • 26
        Technical Issues on RF power coupler for QWR and HWR cavity in RISP (10' + 8')

        Abstract
        RF power couplers for QWR and HWR cavity are under the mass production in RISP. We will present the technical issues which occurred during the preparation and test of the RF power couplers. The contamination of the coupler is occurred after the ultra-sonic cleaning (USC) with the DI-water. The USC procedure of the coupler is modified as replacing the DI-water to the ethanol. The material for metallization of ceramic window, which is AgCu alloy (Ag-50% Cu-50%), could be oxidized by the DI-water. And the surface of the outer conductor is contaminated after the USC procedure. Substitute the ethanol for the DI-water, the contamination of ceramic window is not observed after the USC procedure. Also, the decay time measured from the RF power coupler has non-linearity when the RF power switched off. This non-linearity of decay time is only observed in horizontal test. The non-linearity of decay time makes the decay time longer than the linear decay time, and the loaded Q is also increased. The linear part of the decay time, which is a few hundreds of micro-second after the RF power switched off, is used for calculation of the loaded Q.

        Provocative topics:
        The high pressure rinse procedure is necessary for clean room preparation of RF power coupler?
        The reason of the non-linearity in the measured decay time

        Speaker: Sangbeen Lee (Institute for Basic Science)
        TTC2020_WG2_slee_ver1_200202.pdf
        TTC2020_WG2_slee_ver1_200202.pptx
    • 15:30
      Coffee Break 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
    • Working Group Session: WG1_Sample Studies 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
      Conveners: Ari Palczewski (Thomas Jefferson National Accelerator Facility), Kensei Umemori (KEK), Marc Wenskat (Deutsches Elektronen-Synchrotron DESY)
    • Working Group Session: WG2_Couplers and Auxiliaries 503/1-001 - Council Chamber

      503/1-001 - Council Chamber

      CERN

      162
      Show room on map
      Conveners: Eric Montesinos (CERN), Naruhiko Sakamoto (RIKEN), Sang Hoon Kim (FRIB)
      • 32
        R&D Toward High Power Warm SiC Beam Line HOM Absorbers (10' + 8')

        Abstract:
        The SRF cavities for the electron storage ring of an Electron-Ion Collider (EIC) to be built at BNL are planned to operate continuous wave (CW) with beam currents ranging from 0.26 to 2.5A and energies from 5 to 18 GeV. Strong High Order Mode (HOM) damping is necessary to maintain beam stability. Our approach is to use Silicone Carbide (SiC) as a lossy dielectric located in the room-temperature beamlines adjacent to the SRF cavities to absorb the HOM power. Simulations predict up to 80 kW of CW HOM power per cavity during operation. This talk will briefly present plans and analysis to extract the HOM power from the SiC material into a water-cooled section of beampipe along with progress to date on the prototype fabrication of the Beam Line Absorbers (BLAs). Plans for low power and high power testing will also be presented.

        Provocative Topics:
        Beampipe vs waveguide or coaxial HOM coupling, very high HOM power absorbers, SRF cavity contamination from SiC particulate.

        Speaker: Doug Holmes (BNL)
        R&D Toward High Power Warm SiC Beam Line HOM Absorbers.pdf
        R&D Toward High Power Warm SiC Beam Line HOM Absorbers.pptx
      • 33
        HOM couplers for crab cavities and challenges (10'+8')

        Abstract:
        Two types of crab cavities will be installed into the LHC as part of the HL-LHC project. To mitigate the problems of large beam-induced heat-loads and instabilities, the higher order modes in both cavities are damped by coaxial couplers. This presentation will detail the HOM damping mechanisms chosen, specifically looking into broad-band damping and limitations with dynamic heat loads. Finally, design constraints arising from manufacture and transport are presented with key points for discussion.

        Provocative topics:
        High power SC HOM couplers, gasket heat loads, transport of HOM couplers, manufacture of HOM couplers.

        Speaker: James Alexander Mitchell (CERN)
        TTC.pdf
        TTC.pdf
        TTC.pptx
        TTC.pptx
      • 34
        Newest Piezo-Actuators for High Dynamic Rate Operation (10'+8')

        Abstract:
        To compensate for SRF cavity Lorentz Force Detuning fast/piezo actuator must operate at high amplitude and high dynamic rate. The piezo-actuator when operated inside insulate vacuum environment with pulses of large amplitude could be overheated quickly. Uncontrollable increase of the piezo actuator temperature could lead to the failure of the actuator, as reported in many papers.
        Removing heat from piezo-ceramic when it is operated inside insulate vacuum environment complicated task that newer addressed previously. FNAL and PI team developed newest high dynamic rate (HDR) piezo-ceramic actuator that has unique way to remove heat from piezo.
        Design of the newest actuator-actuators and preliminary test results will be presented.
        This new HDR piezo-actuators could significantly increase reliability of the fast tuners for compensation of Lorentz Force detuning in the SRF Linacs that operated in RF-pulse mode.

        Provocative topic:
        What is reliability/ longevity of the piezo-tuners that deployed in recent SRF linacs?
        What are the reasons that practically every modern SRF accelerator system that built recently has piezo-tuners?
        But not many facility is running piezo-actuators 24/7 ?
        Low reliability of the piezo? And the risk that piezo-stack could fail prevent it from
        actively operate fast/piezo tuners for High Dynamic Rate operation?

        Speaker: Yuriy Pischalnikov (FERMILAB)
        TTC2020_Pischalnikov_New HDR piezo.pdf
      • 35
        Compact tuner designed to minimize the intervals of QWRs for RIKEN heavy-ion linac (10'+8')

        Abstract:
        The superconducting booster linac at RIKEN (SRILAC) has ten 73-MHz quarter-wavelength resonators (QWRs) that are contained in three cryomodules (CMs).
        Focusing element of quadrupole magnets at room temperature were installed between CMs. In order to obtain optimum beam dynamics, an intervals of QWRs was set as small as 110 mm. Frequency tuning during cold operation is performed by compressing the beam port of the cavity and decreasing the length of each beam gap using a dynamic tuner. The tuning range of the cavity itself is from 0 to -14 kHz. The tuner is used to tune by a few kHz at the beginning of the cavity excitation, and by a few Hz for a long term operation in order to compensate the frequency change by helium pressure.
        Since the intervals of QWRs is small, a compact design of the dynamic tuner was adopted. The support plates were welded to the helium jacket, and surrounding wires were attached.
        A cavity frequency is decreased by tightening the wires, which is driven by a stepping motor and gears (ratio is 1:64).
        In a cooling test at 4K, each cavity was successfully tuned to the design frequency by the tuner, in which the required frequency change was 3 kHz to 8 kHz depending on the cavity.
        There is a hysteresis of around 10 Hz, which is caused by a backlash of the mechanical system.
        The sensitivity of helium pressure was estimated to be df/dp = -1.91 Hz/hPa by a 3D EM calculation. In a short term (in periods of 2--3 minutes), helium pressure is stable by around 4 hPa (8 Hz) against the bandwidth of 50 Hz. Long term stability test (1 day) is underway.
        If the frequency is not stable enough, an automatic frequency tuning will be necessary.
        The tuner design and test results with cold cavities will be presented.

        Provocative topics:
        Compact tuner for QWR, minimal interval of QWR
        Performance test of tuner

        Speaker: Kenji Suda (RIKEN)
        TTC2020-ksuda-20200204.pdf
        TTC2020-ksuda-20200204.pdf
        TTC2020-WG2-20200204_ksuda_update.pdf
      • 36
        Resonance control with pneumatic slow frequency tuners for FRIB > half-wave resonators (10' + 8')

        Provocative topics:
        Mechanical modes integrated with a pneumatic tuner, magnetic hygiene with a pneumatic tuner, use of 'industrial-class' proportional solenoid valves for large-scale SRF accelerators

        Speakers: John Popielarski (FRIB), Sang Hoon Kim (FRIB)
        Kim_TTC2020_Pneumatic_tuners_for_FRIB_HWR.pdf
    • 17:30
      Break 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
    • Collaboration Board: meeting 61/1-009 - Room C

      61/1-009 - Room C

      CERN

      22
      Show room on map
  • Wednesday, 5 February
    • Plenary: Plenary talk 3, Plenary talk 4, Plenary talk 5 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map

      Welcome, Plenary talk 1, Plenary talk 2

      Convener: Wolf-Dietrich Moeller (DESY)
    • 10:30
      Coffee Break 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
    • Working Group Session: WG1_Flux Expulsion 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
      Conveners: Ari Palczewski (Thomas Jefferson National Accelerator Facility), Kensei Umemori (KEK), Marc Wenskat (Deutsches Elektronen-Synchrotron DESY)
    • Working Group Session: WG2_Couplers and Auxiliaries 6/2-024 - BE Auditorium Meyrin

      6/2-024 - BE Auditorium Meyrin

      CERN

      120
      Show room on map
      Conveners: Eric Montesinos (CERN), Naruhiko Sakamoto (RIKEN), Sang Hoon Kim (FRIB)
      • 45
        Power Couplers - Technology, manufacturing, and four ways to procure for half the price (15' + 8')

        Abstract:
        Power couplers provide the vacuum and thermal interface between the superconducting cavity and the room temperature waveguide components, and transmit microwave power. The production of Power Couplers require a unique set of manufacturing processes. Procurement costs can vary widely for a number of reasons. This paper will show the critical technologies required and the breakdown of major components of cost.

        Provocative topic:
        Four methods to procure couplers for half the price will be discussed, along with recommendations for cost savings from a manufacturers perspective.

        Speaker: Steve Einarson (CPII)
        Power Coupler Presentation-R1 CERN 1-17-20.pdf
        Power Coupler Presentation-R1 CERN 1-17-20.pptx
      • 46
        THALES experience for EU-XFEL project – From the (non)pre-industrialization phase to mass production (15'+8')

        Abstract:
        In July 2010, THALES Electron Devices (now THALES Avionics France SAS) in consortium with Research Instrument has be awarded by CNRS/IN2P3 for the mass production of 670 RF couplers at 1.3GHz for the EU-XFEL project in Hamburg. This positive outcome has been the result of a long journey started in 2004 by several steps of consultation and discussions between the laboratories acting as design authorities / in-kind contributors to the project and the Industry.

        Provocative topic:
        In this talk, we will summarize the pre-tendering discussions and the aborted industrialization phase seen from THALES stand point and the consequences during project successful execution from 2010 till 2015.

        Speaker: Stephane Bethuys (THALES)
        WWFPC #6 meeting - THALES (05.02.2020).pdf
      • 47
        Development of fundamental power couplers for several years at CETD (15' + 8')

        Abstract:
        CETD (former company name: TETD) has developed and manufactured FPCs since more than 30 years ago in collaboration with KEK or other research institutes.
        Recent years we succeeded in contract with overseas customers and we made efforts to solve various problems in order to satisfy customers requirements.
        In this talk, our products developed in last few years will be introduced and some proposals and requests from the supply side will be presented.

        Speaker: Masao Irikura (CANON)
        TTC2020_CETD20200205.pdf
      • 48
        Remarks on the industrial production of FPC (15' + 8')

        Abstract:
        The talk will address the positive and negative experiences that RI gained during the production of FPC in large scale series (E-XFEL, LCLS-II) and small scale projects. The most critical processes and head-aches will be reflected from “behind the scenes”.
        The specifications do often cut the edge of achievable copper plating, TIN deposition and mechanical tolerances in a serial production and sometimes seem to be overshooting. The current development from pulsed to CW machines does raise the question, if the TTF-III coupler as a design baseline is still up to date.

        Provocative topics:
        Overtight copper plating specifications
        TIN deposition control (nanometers!)
        Specified mechanical tolerances
        Is the TTF-III coupler still up to date?

        Speaker: Daniel Trompetter (RI Research Instruments GmbH)
        TTC2020_FPC-at-RI_DTR.pdf
    • 12:30
      Lunch
    • Working Group Session: WG3_Coating techniques 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
      Conveners: Guillaume Jonathan Rosaz (CERN), Teng Tan (IMP), Tobias Junginger (University of Victoria/TRIUMF)
    • Working Group Session: WG4_New Fabrication Methods (1 /2) 6/2-024 - BE Auditorium Meyrin

      6/2-024 - BE Auditorium Meyrin

      CERN

      120
      Show room on map
      Conveners: Hiroshi Sakai (KEK), Stephane Berry (CEA), Tug Arkan (FNAL)
    • 15:30
      Coffee Break 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
    • Working Group Session: WG3_Alternative Materials/Structures to Nb films 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
      Show room on map
      Conveners: Guillaume Jonathan Rosaz (CERN), Teng Tan (IMP), Tobias Junginger (University of Victoria/TRIUMF)
    • Working Group Session: WG4_New Fabrication Methods (2 /2) and Alternative Cooling Techniques 6/2-024 - BE Auditorium Meyrin

      6/2-024 - BE Auditorium Meyrin

      CERN

      120
      Show room on map
      Conveners: Hiroshi Sakai (KEK), Stéphane BERRY (CEA-Saclay), Tug Arkan (FNAL)
    • 17:30
      Break 500/1-001 - Main Auditorium

      500/1-001 - Main Auditorium

      CERN

      Several rooms
      400
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    • Technical Board: meeting 61/1-009 - Room C

      61/1-009 - Room C

      CERN

      22
      Show room on map
  • Thursday, 6 February
  • Friday, 7 February
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