Name: TTC 2026 Meeting, CEA-CNRS-Université Paris Saclay, 9-12 June 2026, Gif sur Yvette, France
Start: 2026-06-09T08:00:00+02:00
End: 2026-06-12T18:00:00+02:00
Location: Ecole Centrale Supelec

TTC 2026 Meeting, CEA-CNRS-Université Paris Saclay, 9-12 June 2026, Gif sur Yvette, France

de mardi 9 juin 2026 (08:00) à vendredi 12 juin 2026 (18:00)

lundi 8 juin 2026
mardi 9 juin 2026

08:30

08:30 - 09:00

09:00

09:00 - 09:30
09:30 Plenary 1
Plenary 1
09:30 - 10:30
Contributions

09:30 SRF activities at CEA and IJCLAB (TBD) - TBD

10:00 European Strategy for SRF development - Peter McIntosh (UKRI-STFC)
10:30 Coffee break
Coffee break
10:30 - 11:00
11:00 session 1 - Surface Processing Toward Project Realization
session 1 - Surface Processing Toward Project Realization
11:00 - 12:35
Contributions

11:00 Summary of Remote High Q/High Gradient Working Group - Akira Miyazaki (CNRS/IN2P3/IJCLab)

11:05 Recent result of 2-step baking at KEK - Eric Viklund (KEK)

11:23 Recent progress of SHINE high-Q cavities - Yue Zong (SARI)

11:41 Status and Results of Mid-Temperature Baking for PIP-II LB 650 MHz Cavities - Jacopo Bernardini (Fermilab)

11:59 Results from mid-T bake applied to 1.5 GHz C75 5-cell cavities for CEBAF - Pashupati Dhakal (Jlab)

12:17 Surface treatment platform construction and preliminary experiment for S3FEL - Shaohua Peng (IASF)
Session 1 - Experience of current projects : EU-XFEL, LCLS-II-HE, FRIB, RAON, ESS, SHINE, CiADS, S3FEL, PIP-II, Hi-Lumi
Session 1 - Experience of current projects : EU-XFEL, LCLS-II-HE, FRIB, RAON, ESS, SHINE, CiADS, S3FEL, PIP-II, Hi-Lumi
11:00 - 12:35
Contributions

11:00 Experience of current projects : EU-XFEL, LCLS-II-HE, FRIB, RAON, ESS, SHINE, CiADS, S3FEL, PIP-II, Hi-Lumi - Detlef Reschke (DESY) James Maniscalco (SLAC) Laura Popielarski (MSU) Youngkwon Kim (IBS) Paolo Pierini (ESS) Jinfang Chen (SARI) Jiang Tiancai (IMP) Han Li (IASF) Mattia Parise (Fermilab) Leonardo Ristori (CERN) Jacopo Bernardini (Fermilab)

11:50 Open Discussion
12:35 Lunch break
Lunch break
12:35 - 14:00
14:00 session 2 - Surface Processing R&D
session 2 - Surface Processing R&D
14:00 - 15:30
Contributions

14:00 Recent progress in high-frequency pulse electropolishing of niobium and SRF cavity in ionic liquid - Qingwei Chu (IMP)

14:18 Enhancement of medium-temperature treated cavities for high-Q and high gradient - Julia Goedecke (DESY)

14:36 Frequency shift measurements as indicator for SRF performance - Marc Wenskat (DESY)

14:54 Crystalline ZrO2 Capping Layer with Atomically-Sharp Oxide-Superconductor Interface - Nathan Sitarman (Cornell)

15:12 Progress in understanding magnetic-flux-entry in coated Nb using β-detected NMR - Ryan McFadden (Triumf)
Session 2a - Pressure Vessel Code in Accelerator Projects
Session 2a - Pressure Vessel Code in Accelerator Projects
14:00 - 14:45
Contributions

14:00 Experience in EU projects (Eu-FEL 3.9GHz, ESS, PIP-II) - Daniele Sertore (INFN)

14:10 How to build proper cryogenic lines to fulfil PED requirements - Henry Przybilski (ESS)

14:15 Experience China (SHINE) - Yawei Huang (ShanghaiTech University)

14:25 Experience Japan (KEK) - Takeshi Dohmae (KEK)

14:35 Open Discussion
14:45 Session 2b - Mass Production and QA/QC: HOM & bellows
Session 2b - Mass Production and QA/QC: HOM & bellows
14:45 - 15:30
Contributions

14:45 Production of material for HOM housing for TESLA cavity and Ti bellows for cavity jacket - Takeshi Dohmae (KEK)

14:57 Fabrication Challenges and Process Optimization of HOM Absorber for the S3FEL - Huizhong Pang (IASF)

15:09 Challenges with production of HOM Couplers for Hi-Lumi - Naeem Huque (JLab)

15:21 Open Discussion
15:30 Coffee break
Coffee break
15:30 - 16:00
16:00 session 3 - Theory + Sample studies
session 3 - Theory + Sample studies
16:00 - 17:30
Contributions

16:00 New insights in the multilayer theory of superconducting RF cavities OR Progress on the Microscopic Theory of Inhomogeneous Disordered Superconductors - Carlos Redondo-Herrero (IJCLab)

16:18 Microwave Response of Superconductors with Paramagnetic Impurities - Mehdi Zrea (LSU)

16:36 Correlating Nb-SRF Surface Processing with Evolution of Surface Electronic States - Malvika Tripathi (Fermilab)

16:54 Investigating Impurity-Based Treatments in SRF Cavities through Coupled RF and Materials Characterization - Hannah Hu (Fermilab)

17:12 Electropolishing-induced topographic defects in niobium: insights and implications for superconducting radio frequency applications - Eric Lechner (Jlab)
Session 3 - Mass Production and QA/QC: FPC & CM
Session 3 - Mass Production and QA/QC: FPC & CM
16:00 - 17:30
Contributions

16:00 Development of SHINE 3.9 GHz fundamental power couplers - Zhenyu Ma (SARI)

16:12 Issues and mitigation methods with FPC during 1.3GHz Cryomodule assembly - Han Li (IASF)

16:24 Fundamental Power coupler for ESS, experience from series production and conditioning - Thibault Hamelin (CEA)

16:36 Fabrication Status and Addressing Ceramic Yield Challenges - Tommaso Aiazzi (Fermilab)

16:48 Standardization of the PIP-II cavity string assembly procedure and quality assurancey - Mattia Parise (Fermilab)

17:00 Initial CM operation performances on test and commissioning - Cecilia Maiano (ESS)

17:12 2K static heat load performance for SHINE cryomodules - Yawei Huang (ShanghaiTech University)

17:24 Open Discussion
17:30 Break
Break
17:30 - 18:00

18:00 CB meeting
CB meeting
18:00 - 19:00
mercredi 10 juin 2026
09:00 Plenary 2
Plenary 2
09:00 - 10:30
Contributions

09:00 SRF Systems for the EIC Project - Joseph Matalevich (JLab)

09:30 Development, commissioning and high-current CW operation of 166.6 MHz HOM-damped SRF modules at HEPS - Zhang Pei (IHEP)

10:00 Commissioning and current Status of HELIAC Project at GSI - Maksym Miski-Oglu (GSI)
10:30 Coffee break
Coffee break
10:30 - 11:00
11:00 session 4 - Sample studies
session 4 - Sample studies
11:00 - 12:30
Contributions

11:00 Enhanced RF Performances in 1.3 GHz Nb Cavities via Mid-T Baking: Insights from Correlative Sample Studies - Zhaoxi Chen (ShanghaiTech University)

11:18 The Origin of Medium-Temperature Baking Efficacy: Formation and Role of an Ordered Oxide Template - Didi Luo (IMP)

11:36 Manipulation of Nb carbide during Mid-T bake : Impact of baking configuration and plasma treatment - Chahinez Boutelaa

11:54 Field of first vortex penetration of inhomogeneous materials: Predictions via Ginzburg-Landau theory and comparison to magnetometry measurements - Lucas Wallace (University of Victoria)

12:12 Studying the effect of metallographic polishing on trapped magnetic flux with CRAFT - Alex Cierpka (HZB)
Session 4 - Mass Production and QA/QC: CM & CAV
Session 4 - Mass Production and QA/QC: CM & CAV
11:00 - 12:30
Contributions

11:00 Production and Quality Lessons from Large Cryomodule Projects at Jefferson Lab - Naeem Huque (JLab)

11:12 QC experience of CM component fabrication, vendor challenges - Jacopo Bernardini (Fermilab)

11:24 RF Testing and Performance Analysis of Low Beta Superconducting Cavities for HIAF Facility - Wei Shihui (IMP)

11:36 Development of SRF Cavities for S3FEL - Yuchao Fang (IASF)

11:48 PIP-II cavity qualification challenges (both SSR and elliptical) - Jacopo Bernardini (Fermilab) Mattia Parise (Fermilab)

12:00 Production of RFD crab cavities for LHC Luminosity upgrade - Leonardo Ristori (CERN)

12:12 Progress about CSNS-II superconducting cavities - Wenzhong Zhou (IHEP)

12:24 Open Discussion
12:30 Lunch break
Lunch break
12:30 - 14:00
14:00 Session 1 - Performance degradation and component failures in operation
Session 1 - Performance degradation and component failures in operation
14:00 - 15:30
Contributions

14:00 LHC SRF cavities: operational experience - Katarzyna Turaj (CERN)

14:15 What we learned from the six-year operation of SRILAC - Naruhiko Sakamoto (Riken)

14:30 Operational Status of the RAON Low Energy Linac - Youngkwon Kim (IBS)

14:45 Typical operation issue and relevant experience of CAFE/CAFE2 SRF linac - Andong Wu (IMP)

15:00 Performance degradation and component failures of SC cavity system in SuperKEKB operation - Takafumi Okada
Session 1- Field emission prevention and additive manufacturing
Session 1- Field emission prevention and additive manufacturing
14:00 - 15:30
Contributions

14:00 Now and future automatic clean assembly of SRF cavity - Hao GUO (IMP)

14:12 SRF Robotic Assembly Development at Fermilab - Colin Narug (Fermilab)

14:24 Development of a cobot-assisted HPR system for complex geometries - Nicolas Gandolfo (IJCLab)

14:36 COBOT operations and development at CEA - Julien Drant (CEA IRFU)

14:48 Robotic assembly for field emission free systems - Roger Ruber (JLab)

15:00 Cu substrate by Additive Manufacturing - Fabien Eozenou (CEA Saclay, IRFU/DACM)

15:12 1.3 GHz cavities substrate production by Wire Additive Manufacturing - Oscar Azzolini (INFN LNL)

15:24 Discussion
15:30 Coffee break
Coffee break
15:30 - 16:00
15:55 Session 2 - Performance degradation and component failures in operation
Session 2 - Performance degradation and component failures in operation
15:55 - 17:30
Contributions

16:00 Cavity performance over the operational lifetime of the LCLS superconducting linac - Sebastian Aderhold

16:15 Particulate lofting and migration under exposure of low energy electron beam - Aveen Mahon (Triumf)

16:30 Particles measurement of beam line gate valves - Stéphane Berry (CEA)

16:45 Field emission experience: from module tests in test stand to first and second commissioning in ESS linac - Cecilia Maiano (ESS)

17:00 Gas induced Q degradation in ISAC-II operation - Zhongyuan Yao (Triumf)

17:15 Cavity performance evolution from vertical test to on-line commissioning at SHINE - Jinfang Chen (SARI)
16:00 Session 2 - Couplers and Tuners
Session 2 - Couplers and Tuners
16:00 - 17:30
Contributions

16:00 Development and high-power operation of the FPC for HEPS 166.6 MHz srf cavities - Tongming Huang (IHEP)

16:12 Achievement of CW 100 kW Class Power Transmission by an L-band High-Power Input Coupler for SRF Accelerators. - Pragya Nama (KEK)

16:24 Compact on-axis coaxial HOM damper for SRF cavities - Andrei Lunin (Fermilab)

16:36 Characterization of Cryogenic Beamline Absorber Materials for High-Current SRF Accelerators - Axel Perez Ruiz (IJCLab)

16:48 ALD Coating for Multipacting Mitigation in ICONE Couplers - Yasmine Kalboussi (CEA)

17:00 Improvement of CW ERL Performance of TESLA-type Cavities by Fast Reactive Tuner and Coated HOM-Antennas - Timo Stengler (University of Mainz)

17:12 latest findings on the development of the Ferroelectric Fast Reactive Tuner within the ISAS collaboration - Nicholas Shipman (HZB)

17:24 Discussion
17:30 Break
Break
17:30 - 18:00

18:00 TB meeting
TB meeting
18:00 - 19:00
jeudi 11 juin 2026
09:00 Plenary 3
Plenary 3
09:00 - 10:30
Contributions

09:00 LCLS-II-HE upgrade status/Recent Status of LCLS-II operation experience - James Maniscalco (SLAC)

09:30 RF commissioning of HIAF's iLINAC - Feng Qiu (IMP)

10:00 Experience with recommissioning of the European XFEL after Long Installation and Maintenance Period - Mateusz Wiencek (DESY)
10:30 Coffee break
Coffee break
10:30 - 11:00
11:00 Session 3 - FE mitigation and plasma processing
Session 3 - FE mitigation and plasma processing
11:00 - 12:30
Contributions

11:00 Plasma processing of elliptical cavities at INFN - LASA - Elisa DelCore (INFN)

11:15 Towards Plasma Processing in SPIRAL2 SRF Cavities - Martin Devaux (Ganil)

11:30 Plasma processing development at CSNS-II - Cong Zhang (IHEP)

11:45 Plasma process for several types of cavities in CiADS - Andong Wu (IMP)

12:00 In-situ plasma processing, pulse conditioning, helium pulse processing, and thermocycling on low-beta cavities at the ATLAS - Megan McIntyre (ANL)

12:15 Development of in-situ plasma processing procedures with the fundamental passband on 1.3GHz multi-cell SRF cavities at TRIUMF - Will Stokes (Triumf)
MATERIALS 1, Surface Engineering, Nb/Cu
MATERIALS 1, Surface Engineering, Nb/Cu
11:00 - 12:30
Contributions

11:00 Reduced BCS Resistance and Stable Medium-Field Operation from Nb3Al-Nb S'S Multilayer - Nathan Sitaraman (Cornell)

11:12 ALD interlayer to suppress thermoelectric currents - Ivana Curci (CEA)

11:24 ALD R&D at University Hamburg - Marc Wenskat (DESY)

11:36 High-energy pulsed magnetron re-sputtering/sputtering apparatus for Nb-Cu 1.3 GHz RF cavities - Peng Dong (ShanghaiTech University)

11:48 From 1.3 GHz to 400 MHz Nb/Cu Cavities: Challenges and Optimisation Strategies - Caroline Hain (CERN)

12:00 Recent results of Nb/Cu coating cavity under KEK/CERN collaboration - Walter Venturini (CERN)

12:12 Recent Progress in Nb and Nb3Sn on Cu coatings for SRF applications at JLab - Anne-Marie Valente-Feliciano (Jefferson Lab)

12:24 Discussion
12:30 Lunch break
Lunch break
12:30 - 14:00
14:00 Session 4 - FE mitigation, FE diagnose, activation and root causes
Session 4 - FE mitigation, FE diagnose, activation and root causes
14:00 - 15:30
Contributions

14:00 Advancing In-Situ Plasma Processing for SRF Cavities at Fermilab - Bianca Giaccone (Fermilab)

14:15 Ozone processing and comparison with plasma processing - Roger Ruber (JLab)

14:30 Field Emission Diagnostics and Magnetic Heating Effects in Superconducting Cavities - Heetae Kim (IBS)

14:45 Analysis of Parasatic emissions phenoma during cryomodule operation - Guillaume Devanz (CEA)

15:00 Field emission analysis in SRF cavities for PIP-II using GEANT4 - Sajini Wijethunga (Fermilab)

15:15 Surface-Driven Field Emission Mechanisms and Mitigation in SRF Cavities - TongTong Zhu (IMP)
MATERIALS 2, Nb3Sn
MATERIALS 2, Nb3Sn
14:00 - 15:30
Contributions

14:00 Recent Progress in Nb3Sn on Cu coatings for SRF cavities at LNL - Matteo Lazzari (INFN LNL)

14:12 Recent Progress in Nb3Sn on Cu coatings for SRF cavities at UKRI - Reza Valizadeh (STFC/UKRI)

14:24 Towards Nb3Sn coated copper cavities for energy efficient SRF application - Marton Major (Darmstadt Technical University)

14:36 Optimization of Bronze-Route Nb3Sn Films on Copper Substrates for Quadrupole Resonator Testing - Ming Lu (HZB)

14:48 An Integrated Approach to Nb₃Sn Cavities: Bronze-Route Fabrication and Laser Post-Treatment - Teng Tan (IMP)

15:00 Challenges to the vapor diffusion Nb3Sn coatings: A Material Science Analysis - Nikki Tagdulang (Fermilab)

15:12 Discussion
15:30 Coffee break
Coffee break
15:30 - 16:00
16:00 Developing SRF towards Turn-Key Industrial Systems
Developing SRF towards Turn-Key Industrial Systems
16:00 - 17:30
Contributions

16:00 Technical Frontier

16:25 Engineering path for reliability

16:50 Strategic democratization
17:30 Break
Break
17:30 - 19:30

19:30 Social dinner
Social dinner
19:30 - 21:30
vendredi 12 juin 2026
09:00
09:00 - 10:30
Contributions

09:00 Einstein Telescope, pushing the outer limits of gravitational waves detection - Angélique Lartaux (IJCLab)

09:45 Superconductivity and Cryogenics in Space : An active magnetic shield to protect astronauts for interstellar travels - Bertrand Baudouy (CEA)
10:30 Coffee break
Coffee break
10:30 - 11:00
11:00 Summary
Summary
11:00 - 13:00
Contributions

11:00 Summary WG1

11:20 Summary WG2

11:40 Summary WG3

12:00 Summary WG4

12:20 TB/CB Report

12:40 Closing - Catherine MADEC (CEA) David Longuevergne (IJCLab)
13:00 Lunch break
Lunch break
13:00 - 14:30

14:30

14:30 - 16:30