Accelerator mode changed to: PROTON PHYSICS
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LHC Status
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Automated posts about the operation of the Large Hadron Collider. Bot managed by @ferdinand@fosstodon.org
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Joined November 26, 2024
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Comments (02:59:13) 800b fill
Comments (02:53:01) *** STABLE BEAMS *** IP 2 & 8 on target Emittance scan IP 1 & 5 XRPs IN
Comments (02:57:28) rf issue, piquet investigating
Next: refill for physics
Comments (09:09:20) All IPs on target
Beam dump planned around 13:00
SVC restart needed after beam dump
Comments (06:56:24) 800b fill
Collimator control issue: access needed to UJ33
RF experts still investigating the last 2 dumps
NO BEAM before 08:00
Comments (03:50:07) Beam 2 HI fill with 1788b
Access planned on Wednesday
from 14:00 to 18:00
Comments (20:24:21) access completed, preparing the machine
Access planned on Wednesday
from 14:00 to 18:00
Comments (09:47:54) All IPs on target
Beam dump planned between 11:00 and 13:00
SVC restart needed after beam dump
(precycle afterwards)
Comments (14:41:11) 800b fill
Access planned on Wednesday
for 14:00 to 18:00
Comments (15:33:40) Lost sector 56, quenched 4 MBs
Cryo conditions back
QPS access ongoing
No beam before 17
Comments (05:27:52) ### STABLE BEAMS ###
All IPs on target
XRPs - IN
Comments (11:32:24) 800b fill
Collimator control issue
access ongoing in UJ33
no beam before 13:30
Comments (12:52:35) No beam until the access
Access planned on Wednesday
from 14:00 to 18:00
Comments (19:30:44) 1500b fill to 3 TeV
Comments (02:48:39) *** STABLE BEAMS *** IP 2 & 8 on target
Comments (18:45:37) rf access required
no beam before 21:00
Access planned on Wednesday
from 14:00 to 18:00
Comments (09:55:24) Lost sector 56, likely quench
Comments (01:34:12) Fill for physics
Comments (05:12:21) Beam 1 HI fill with 1920b
Access planned on Wednesday
from 14:00 to 18:00
Comments (13:04:10) Oracle database security patch intervention
started
No beam until the access
Access planned on Wednesday
from 14:00 to 18:00
Comments (19:46:50) Preparing for physics
Beam tuning in injectors
RF issues in CPS
investigating
Comments (03:06:03) next: Beam 2 HI fill with 1788b
Access planned on Wednesday
from 14:00 to 18:00
Comments (13:42:46) Oracle database security patch intervention
completed
No beam until the access
Access planned on Wednesday
from 14:00 to 18:00
Comments (02:48:55) *** STABLE BEAMS *** IP 2 & 8 on target Emittance scan IP 1 & 5 XRPs moving in
Comments (10:53:20) Lost sector 56, likely quench
Cryo conditions not expected before this evening
QPS access at 11:15
Comments (01:41:40) *** STABLE BEAMS *** IPs 2 & 8 on target IPs 1 & 5 - emittance scan XRPs moving in
Comments (23:34:01) SND access completed
Next: precycle
After: AGK validation at injection
Then: physics low-b, full machine, SB > 00:00
Comments (01:01:28) next: Beam 1 HI fill with 1788b
Access planned on Wednesday
from 14:00 to 18:00
Comments (12:44:21) Lost sector 56, quenched 4 MBs
Cryo conditions expected around 17:00
QPS access ongoing
Comments (17:45:10) beams dumped (again) by trip of RCBXH3.L1
Calling QPS piquet
NEXT: fill for physics
Comments (11:29:02) HI fill with both beams at operational level
(1500b)
Access planned on Wednesday
from 14:00 to 18:00
Beams dumped, end of fill 11707.
Stable beams lasted 7 hours.
Delivered luminosity: ATLAS: 543.9 pb⁻¹, ALICE: 219.7 nb⁻¹, CMS: 541.4 pb⁻¹, LHCb: 52.9 pb⁻¹
Comments (03:17:54) *** STABLE BEAMS *** All IPs on target XRPs IN
Comments (22:41:45) SND access on-going
Next: physics low-b, full machine, SB > 00:00
Comments (19:19:27) Triplets L2 tripped, investigating
NEXT: fill for physics
Comments (20:16:49) Triplets L2 tripped,
issue with PIC, restarting
NEXT: fill for physics
Comments (16:16:43) beams dumped by trip of RCBXH3.L1
Comments (05:20:08) ### STABLE BEAMS ###
All IPs going to target
XRPs moving IN
Comments (13:52:32) Beam back ininjectors
preparing for 800b fill
Comments (20:48:16) Beam 1 HI fill with 1644b
Access planned on Wednesday
from 14:00 to 18:00
Comments (18:15:57) QPS access completed
Preparing to close the machine
Beam expected by ~19:30
Comments (01:58:36) *** STABLE BEAMS *** All IPs on target XRPs IN
Comments (09:33:57) 800b fill
Collimator control issue
access ongoing in UJ33
no beam before 11:30
Comments (13:58:04) 800b fill
Comments (02:12:42) Checklist
next: 800b fill
Comments (06:22:19) 800b fill
Collimator control issue: access needed to UJ33
RF experts still investigating the last to dumps
Comments (06:46:07) 800b fill
Collimator control issue: access needed to UJ33
RF experts still investigating the last to dumps
NO BEAM before 08:00
Comments (07:23:29) 800b fill
Collimator control issue: access needed to UJ33
RF experts still investigating the last 2 dumps
NO BEAM before 09:00
Comments (20:57:52) Beam quality too degraded
CPS piquet called