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11th COLD meeting
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Europe/Paris
CTRM meeting room
CTRM meeting room
11th COLD update meeting
SL
SW
MD
ADE
PB
L.Hardy (remote)
HPM
TRozier
CGTorres
PColomp
TBrochard
DM (remote)
WP01 RF
CFT C-band RF-unit
Scandinova and Jema-Spain applied
next tuesday procedure to start contract
a lot of work to strat civil works
ADE did computations for LN2 risks. From computations, for PINJ not needed LN2 extraction.
for tunnel more tricky. Cryostat 2000l (only 1200l filled). need extraction system. Started discussion with SLAC.
PColomp started to crosscheck.
ADE will give all numbers and details.
PBerkvens said in last safety meeting: usually wors case scenario is computed.
WP04 Mech engineering:
TB: Drawings update
(SEE HAND WRITTEN NOTES)
ADE - PB reviewed coactivities.
3-4th August. 2 weeks needed. Need to start modulator 3.
Grownding and drilling of holes will need to move to winter shutdown.
WP 02
Diagnostics. Beam dump specs to Paul Berkvens.
WP 03
HPM. Pumps supplied for BOC? we can buy ion pumps and send to PSI for tests. ESRF has to buy.
WP 04
SAS for laser needed?
removed faraday cage from drawings
almost 3 m from wall to RF-units
shielding space fro klystron only.
for SAT: stop water for modulator 0 and use for SAT of COLD RF-units
use PINJ water tube close to tunnel. MD quite sure there will be enough flow. F.Favier to measure the flow.
not possible to rotate RF units to install a single common crane for klystrons
1 hole for cables (2 trays of 150mm and one of 250mm)
1 hole for gun chiller
1 hole for laser (ok at beam height because it is behind the gun
BOC moved to modulator hall. Vacuum pump attached to BOC may be too low (hazard to hit with the head)
for BOC need of platform/support
Dewar pressur will fill the cryomodules
Grounding independent of the other modulators.
Electrical network from PROCESS
discussion about works:
grounding + holes should be postponed from August to December shutdown.
ACTION--> call meeting
WP 05
must fill LN2 plan to fill dewars
WP06 no news
WP07 no news
WP08 installing HLS in the linac tunnel this week (18th May 2026).
WP09 Safety
P.Colomp
ASNR last week. Can operate modulator 0.
working on nitrogen aspects + beam dump
PSS point of view ready for conditioning of spare cavity (linac refurbishment).
In the modification of ASNR will include also next modulator.
HR:
+ 1 resource in MEG group
a Technician would be needed
opening of high power RF person to be done as soon as Qing Qin confirms.
AOB
MD: start to make list of cables with diameter. Not sure about quad, dipole. must confirm current. ACTION: ask chams to send list to MArc.
ADE: comments from reviewers for paper on proceeding of conference. A lot of comments. Similar to the comments of PSI for CDR.
ACTION: complete CDR with PSI comments
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