1. Report of TTC-TB meeting at INFN-Milano
2018, February 09
Co-chairs
Wolf-Dietrich Moeller (DESY)
Eiji Kako (KEK)
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

2. TTC-TB meeting at INFN-Milano, 2018' February 09
Outline
Member list
Report from SPC meeting for TTC at INFN-Milano
Discussions
Topics for in-depth discussion in the next TTC
Proposal of WG-organization in the next TTC
Others
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

3. TTC-TB meeting at INFN-Milano, 2018' February 09
TTC-TB member list
Co-chairs
E. Kako (KEK)
W.-D. Moeller (DESY)
Cavity and couplers
S. Bousson (CNRS-Orsay)
S. Calatroni (CERN)
G. Ciovati (Jlab)
R.L. Geng (JLab)
C. Ginsburg (FNAL)
J. Hao (PKU)
R. Laxdal (TRIUMF)
D. Reschke (DESY)
A. Romanenko (FNAL)
K. Umemori (KEK)
J.Y. Zhai (IHEP)
RF and tuning
M. Champion (SNS)
A. Wheelhouse (STFC)
F. Gerigk (CERN)
Cryomodule and cryogenics
C. Madec (CEA)
H. Nakai (KEK)
T. Peterson (FNAL)
P. Pierini (INFN)
Integration and operation
H. Hayano (KEK)
Sang-Ho Kim (SNS)
M. Liepe (Cornell)
S. Schreiber (DESY)
Honoris causa
J. Mammosser (SNS)
C. Pagani (INFN)
M. Ross (SLAC)
H. Weise (DESY)
A. Yamamoto (CERN/KEK)
S. Belomestnykh (FNAL)
Black = participant (17)
Gray = absence (13)
Total = 30
(EU=11, NA=12, Asia=7)
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

4. SPC meeting for TTC at Milano
Scientific Program Committee meeting by Vidyo Remote System ;
(SPC members; Carlo, Hasan, Paolo, Wolf-Dietrich, Kako, Hans, Sergey, Akira)
1st SPC meeting, 2017’ August 29th (Tue)
2nd SPC meeting, 2017’ September 08th (Fri)
3rd SPC meeting, 2017’ September 22nd (Fri)
4th SPC meeting, 2017’ September 29th (Fri)
5th SPC meeting, 2017’ October 06th (Fri)
6th SPC meeting, 2017’ October 20th (Fri)
7th SPC meeting, 2017’ October 27th (Fri)
8th SPC meeting, 2017’ November 09th (THu)
1st /9th SPC meeting with WG conveners, 2017’ November 22nd (Wed)
2nd /10th SPC meeting with WG conveners, 2017’ December 01st (Fri)
3rd /11th SPC meeting with WG conveners, 2017’ December 15th (Fri)
4th /12th SPC meeting with WG conveners, 2018’ January 19th (Fri)
5th /13th SPC meeting with WG conveners, 2018’ February 01st (Thu)
Thanks Carlo and INFN-team for strong leadership !!
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

5. TTC-TB meeting at INFN-Milano, 2018' February 09
Suggested topics for in-depth discussion in TTC at MSU
From a report of the previous TTC-TB meeting at MSU/FRIB.
“where & when” of the next TTC meting is not decided.
Somewhere in Europe, around 1 year later.
　Discussions to input:
Commissioning and operational experience of SRF Accelerators
LLRF for SRF systems including commissioning , operation, microphonics and interlock for quench protection
Gas distribution and dislocation in the beam line vacuum for cold Linacs and consequences for performance degradation.
Discussion of the Niobium specification together with manufacturer in respect of high Q developments and pressure vessel code
Discussion of high pressure code for cavity and cryomodule design
Topical meetings to be shown on the Web page and reports should be given: High Q, High gradient, Thin film
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

6. WG-organization in TTC at Milano
Two parallel sessions: 4 WGs
WG1: CW Operation Challenges; Cavity, High-Q
Genfa Wu (FNAL), Jiyuan Zhai (IHEP), Axel Neumann (HZB)
WG2: CW Operation Challenges; Couplers, Tuners, Modules
Yuriy Pischalnikov (FNAL), Yasuchika Yamamoto (KEK), Rocco Paparella (INFN)
WG3: Commissioning Experience; LLRF, Micro-phonics
Curt Hovater (JLab), Guirong Huang (IMP), Mathieu Omet (DESY)
WG4: Pulsed Operation Challenges; High-G, (high-Q), High-P
Anna Grassellino (FNAL), Kensei Umemori (KEK), Lea Steder (CEA)
Hot-topic: Performance recovery; Cavity, Modules, Linacs
Emmy Sharples (HZB), Hiroshi Sakai (KEK), Paolo Michelato (INFN)
Thanks to WG conveners !!
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

7. Schedule of TTC meeting at Milano
3.5 days
4 days
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

8. Participants and WG-organization in TTC meeting
Location
Date
Participants
Parallel
WGs
INFN-Milano
2018, Feb.
178
2-para
4 WGs
MSU
2017, Feb.
123
2-para.
CEA-Saclay
2016, July
127
SLAC
2015, Dec.
130
KEK
2014, Dec.
108
6 WGs
DESY
2014, Mar.
129
3-para.
9 WGs
JLab
2012, Nov.
154
plenary
IHEP
2011, Dec. 96
3 WGs
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

9. TTC-TB meeting at INFN-Milano, 2018' February 09
Proposal of WG topics for in-depth discussion in the next TTC
How do improve the present specification for bulk Niobium?
What should be the specification for large grain Niobium?
(in respect to pressure vessel code, how to design the machine
to be able to use large grain Niobium ?)
Collect and discuss information about the pressure vessel code from different projects and regions
What are the performance limits for low beta resonators like: QWR, HWR and spoke cavities based on experience?
What are the real performance limitations for cavities?
Vertical test
Module test
Linac operation
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

10. TTC-TB meeting at INFN-Milano, 2018' February 09
Proposal of WG topics for in-depth discussion in the next TTC
Field emission measurements:
How to measure?
How to define limits?
Commissioning and operational experience of SRF Accelerators (also small machines!)
Follow up the development in high Q and high gradient.
Gas distribution and dislocation in the beam line vacuum for cold Linacs and consequences for performance degradation.
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

11. TTC-TB meeting at INFN-Milano, 2018' February 09
Proposal of WG-organization in the next TTC
Program:
First choose the discussion points (2-3) for the working groups than the speaker
Presentation 2/3 and 1/3 discussion, (for more discussion time)
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09

12. Thank you for your attention.
W.-D. Moeller (DESY) E. Kako (KEK)
TTC-TB meeting at INFN-Milano, ' February 09