general project update

• Simone Liuzzo (ESRF)

COLD Project Review in 21st April 2026 with external advisors. Panel members (5-6): RF, photoinjectors, pulsed power: 1) chair: Roberto Corsini (CERN) (CONTACTED, OK) 2) Walter Wuensch (CERN) (CONTACTED, OK) CRYOGENICS: 3) Donato Passarelli (FNAL) (CONTACTED, OK*) Backup: A. Ghribi (IN2P3). operation / diag / synchro / beam dynamics: 4) Sara Thorin (MAX-IV) (CONTACTED, OK) Competitor 6GeV LINACS / LASER 5) Wim Leemans (DESY) (CONTACTED, OK) Agenda: 8.45 welcome coffee 9.00 (20+10) ESRF injectors upgrade overview (Qing Qin) 9.30 (30+15) 6GeV linac and COLD project driver: beam dynamics and planning (Liuzzo) 10.15 coffee break 10.45 (30+15) Acc. Struct + cryomodule for C^3 and COLD (Nanni, Aymar, SLAC) 11.30 (30+15) S-band brazing free high charge Photo electron gun and RF deflector (Alesini, INFN) 12.15 LUNCH (ESRF canteen private room) 13.45 (20+10) RF power and distribution (R.Zennaro, PSI, A.D'Elia, ESRF) 14.15 (20+10) installation, implementation and safety aspects (J-L Revol) 14.45 (20+10) Diagnostics and Laser (F.Ewald) 15.15 coffee break 15.30 (60) review writing 17.30 (15) final review return and closing remarks 19.00 DINNER

WP status round table 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 Timing

Review CDR document Conceptual Design Report: https://www.overleaf.com/7899755955tmcgtsjgcdkt#10571a OK means it is OK for the moment but you are fully free to modify correct, reference add figures, etc.. WP 01 RF OK WP 02 Diagnostics OK WP 03 Vacuum waveguides? WP 04 Mechanical Engineering WP 05 Infrastructure Please check text WP 06 Operation Add reliability, maintainability, repeatability WP 07 Control OK, interlocks to be added WP 08 Alignment OK WP 09 Safety some text, please complement WP 10 Magnets OK WP 11 Beam Dynamics missing several simulations

Planning and budget review

• Simone Liuzzo (ESRF)

JIRA planning (OUTDATED) https://jira.esrf.fr/secure/PortfolioPlanView.jspa?id=26&sid=26&vid=0#plan/backlog New: Microsoft Project planning more tasks more budget additional items (RF-deflector, Water cooling,...) CAN IT BE IMPORTED TO JIRA?

Human resources 2 COD position being opened - LLRF (DM approved 13th January) - RF (papers ready for DM) 1 PhD position - beam dynamics

AOB Collaborations EIC-pathfinder-OPEN project

update confluence page check Pending Actions list from previous meetings https://confluence.esrf.fr/display/PROJCOLD/COLD%3A+Cool+copper+Operation+Linac+Demonstrator