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5th COLD meeting

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meeting cold update 26 sept 2025

present JL Revol, Qing Qin, P Borowiec, F.Ewald, S.White, G.Le Bec, Benoit Roche, Simone Liuzzo, Yann Gouez, JEan Luc Pons , Reine Versteegen

best date for review meeting: April 20th or 21st ok. MAy be review committee will be the present MAC

WP01 RF, PB: Tender Board 2 after meeting. JEMA not Good, Scandinova Ok.

WP02 Diagnostics, FE: Laser identical to ID09 needs. Meeting with ID09, who visited the company recently in Lituania. 
Synchronization of LAser, Gun and Storage ring to be assessed. not trivial.
SW Korean light source did it. Will ask about more details (ACTION)
JLR: post signal synchronization could be sufficient
FE: how to do it? what is the acceptable jitter?
PB: delays could be sufficient
BR: delays depend on the shot, must find a way to predict the delays
(ACTION) Meeting in 2 weeks on timing with PB, JLP, AdE FE, BR, SL, JLR.
FE: special synchronization for laser would cost 70kEuros. If needed. But we od not know if we need it.
BR: present 3GHz linac has zero synchronization with the rest of the accelerators
WP 03 ,04 absent
WP 05 Yann Gouez: will work on file. 
WP 06 and WP09 JLR presentation
JLR BJoly is working on finding new storage spaces and remove shelfs from PINJ
a door is proposed at the begining of PINJ. A door in the middle of PINJ has been proposed, but does not seem to accomodate everyone.

FE laser does not need a clean room: UPDATE infrastructure document (ACTION)

PB a laminar flow room will be needed to assemble the RF waveguides components. We should look at mounting and installation procedures for Accelerating strucutres and waveguides. (ACTION)

JLR: justification needed for tests with undulators. Safety did not react on this topic, so it might be ok. 

YG: many things to be moved from PINJ

JLR: BJoly is looking for space

WP07 JLP: will propose a control system data base and a linac control simulator to develop high level applications

WP08 absent
WP09 absent

WP10 GLB: evaluation of correction coils on quadrupoles instead of movers (ACTION)

QQ: mover may be are not needed. 
In HEPS, thermoionic gun + bunche and subarmonic buncher provide small emittance. Could be a solution to look at.
Are movers FAST enough for orbit feedback?

D.Frichet proposed to contribute for interlocks. (ACTION, modify mailing list and add interlocks tasks, contact for more detailed discussion)

 

 

 

There are minutes attached to this event. Show them.
    • 1:30 PM → 1:35 PM
      general project update 5m

      added PSG group to cold mailing list
      WP10 magnets --> WP magnets and Power Supplies

      Timing task in WP01-RF, could be part of WP02-Diag as well. Need resources associated to this task.

      COLD Project Review in April-June 2026 with external advisors.

      Speaker: Simone Liuzzo (ESRF)
      Screenshot 2025-09-26 at 13.09.54.png
    • 1:32 PM → 1:37 PM
      WP status round table 5m

      WP 01 RF
      WP 02 Diagnostics
      WP 03 Vacuum
      WP 04 Mechanical Engineering:
      WP 05 Infrastructure
      WP 06 Operation
      WP 07 Control
      WP 08 Alignment
      WP 09 Safety
      WP 10 Magnets
      WP 11 Beam Dynamics
      WP 12 Photons

    • 1:35 PM → 1:40 PM
      WP01: RF 5m

      CFT

      Speaker: Alessandro D'Elia (ESRF)
    • 1:35 PM → 1:40 PM
      WP02-Diagnostics 5m

      report from discussion with Laser experts in DESY/ARES
      synchronization

      Speaker: Friederike Ewald (ESRF)
      Synchronisation.pdf
      Synchronisation.pptx
    • 1:45 PM → 1:55 PM
      WP05-infrastructure 10m

      informations needed for feasibility study

      Please fill this document or write to S.Liuzzo:
      https://cloud.esrf.fr/apps/files/files/16443002?dir=/COLD/WP05%20Infrastructure&openfile=true

      Speaker: Yann Gouez (ESRF)
    • 1:55 PM → 2:03 PM
      WP06-operation: plan of installation 8m
      Speaker: Jean-Luc Revol (ESRF)
      Linac projects overview_JLR_26_Sept.pptx
    • 2:05 PM → 2:10 PM
      WP11 Beam Dynamics 5m

      COLD project set up multi particle tracking simulations

      Speaker: Simone Liuzzo (ESRF)
      COLD_update_WP11BeamDyn_26thSept2025.pptx
    • 2:10 PM → 2:15 PM
      Review CDR document 5m

      Conceptual Design Report:
      https://www.overleaf.com/7899755955tmcgtsjgcdkt#10571a

    • 2:15 PM → 2:17 PM
      Planning and budget review 2m

      JIRA planning
      https://jira.esrf.fr/secure/PortfolioPlanView.jspa?id=26&sid=26&vid=0#plan/backlog

      Speaker: Simone Liuzzo (ESRF)
    • 2:20 PM → 2:22 PM
      Human resources 2m
    • 2:25 PM → 2:30 PM
      AOB 5m

      Timing task or WP? + add section to CDR. Any volunteer?

      LTSP document:
      https://www.overleaf.com/read/nsvfrbjwfykb#effb67

      List of pending action:
      https://confluence.esrf.fr/display/PROJCOLD/Meeting+notes

      As requested by the SLAC colleagues, An abstract is submitted and accepted for a talk at the LCWS workshop in October, Valencia:
      https://agenda.linearcollider.org/event/10594/abstracts/

    • 2:30 PM → 2:31 PM
      update confluence page 1m

      check Pending Actions list from previous meetings

      https://confluence.esrf.fr/display/PROJCOLD/COLD%3A+Cool+copper+Operation+Linac+Demonstrator

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