general project update

• Simone Liuzzo (ESRF)

Full energy linac - Impact of the building on the infrastructures

• Yann Gouez (ESRF)

WP status round table

• Yann Gouez (ESRF)
• Alessandro D'Elia (ESRF)
• Simone Liuzzo (ESRF)
• Reynald Bourtembourg (ESRF)
• Hugo Pedroso Marques (ESRF)
• Marc Dubrulle
• Pawel Borowiec (ESRF)

WP 01 RF WP 02 Diagnostics WP 03 Vacuum WP 04 Mechanical Engineering: image from TB WP 05 Infrastructure (planned works for SD 2026) WP 06 Operation WP 07 Control WP 08 Alignment WP 09 Safety WP 10 Magnets WP 11 Beam Dynamics WP 12 Timing

shutdown activities

• Isabelle Leconte

Electronic Logbook

• Gilles Chazot

Planning and budget review

• Simone Liuzzo (ESRF)

PLEASE SPEND what is needed to have items needed for Phase 0 (July 2027). Use COLD budget CODES. If possible, send to SL a planning for each item as in A.D'Elia presentation at the review panel.

Human resources welcome: - PhD beam dynamics (3rd Aug 2026) hiring in progress: - LLRF (job description sligthly modified. Position to be opened again soon) - MEG (Start next week) planned: - COD: RF (papers ready for DM)

AOB Collaborations: frame contract INFN signed! frame contract PSI signed! PSI Addenda drafts (for COLD activities) are agreed with the partners and need to be written and signed. LEGAL OFFICE WORKS ON IT. INFN Addenda drafts in the hands of ESRF LEGAL OFFICE. INFN wants to be paid (3years FTE) to balance the contribution of INFN. SLAC collaboration contract, got feedback 24th Sept from SLAC. in the hands of ESRF LEGAL OFFICE NEW!--> CEA Non disclosure agreement in progress. SIGNED Electrical cabinets soon to be purchased. NEED thermal control for the racks? Faraday cage removal. 2-6th November PUBLISHED PAPER to be used as reference for COLD/Linac6GeV project: https://rdcu.be/Kboh2gS6w24a @article{a2026cold-afc, year = {2026}, title = {Cold cool copper operation linac demonstrator and preliminary studies for a 6GeV injector linac at {ESRF}}, author = {A, D’Elia and S, Liuzzo and P, Borowiec and V, Serrière and M, Dubrulle and M, Morati and S, White and F, Ewald and N, Benoist and K, Scheidt and B, Roche and C, Benabderrahmane and G, Le Bec and R, Bourtembourg and T, Rozier and J, -L Pons and D, Martin and B, Pelissier and L, Eybert and T, Brochard and C, Maccarrone and J, -L Revol and B, Joly and Y, Gouez and H, Pedroso Marques and P, Colomp and A, Dely and F, Falaise and D, Frichet and Q, Qin and E, Nanni and A, Dhar and W, -H Tan and G, Aymar and A, Latina and D, Alesini and F, Cardelli and A, Giribono and C, Vaccarezza and G, Silvi and M, Andorf and J, Maxson and P, Craievich and R, Zennaro}, journal = {The European Physical Journal Plus}, doi = {10.1140/epjp/s13360-026-08284-2}, abstract = {The {ESRF} mid-term plan for the upgrade of the injection complex foresees a 6 {GeV} full energy linac option. Given the space limitations of the site, the linac must fit in 145 m, compactness is a strong design constraint and high gradient technology is a potential candidate to fulfill this goal. {SLAC} cool copper distributed-coupling technology in C-band [1] was selected to realize such a compact injector linac. A demonstrator (Cool copper Operation Linac Demonstrator, {COLD}) for this technology will be installed at the {ESRF}.}, pages = {1096}, number = {9}, volume = {141} }

update confluence page check Pending Actions list from previous meetings (MIND confluence will disappear, we should consider alternatives. Own cloud already in place. Indico for meeting minutes.) https://confluence.esrf.fr/display/PROJCOLD/COLD%3A+Cool+copper+Operation+Linac+Demonstrator