| TE dept |
Put in place a structure to review the RF finger issues involving all the stakeholders. |
✔ |
LHC Machine Committee (LMC #477) |
LHC Machine Committee (LMC #503) |
162
|
| LMC Chairs |
Consider a global coordination of information and issues related to bellows in the LHC machine. |
✔ |
LHC Machine Committee (LMC #477) |
LHC Machine Committee (LMC #480) |
161
|
| TE-VSC, LHCb VeLo team |
Document and provide training to the relevant teams about the sequence of actions to be taken for the different failure scenarios of the VeLo vacuum system. |
✖ |
LHC Machine Committee (LMC #476) |
|
160
|
| BE-OP GL, Energy coordinator |
Report on the cost and constraint to schedule the LHC YETS 2024-25 start two weeks before End-Of-Year Closure. |
✔ |
LHC Machine Committee (LMC #476) |
LHC Machine Committee (LMC #481) |
159
|
| EN-EL |
Follow-up on the planning and impact of the power cut during the AUG tests on machine equipment. |
✔ |
LHC Machine Committee (LMC #476) |
LHC Machine Committee (LMC #477) |
158
|
| RF Burst Disc Task Force, LHC CSAP |
Review the access conditions around the fast-depressurizing valves on the ACS cryomodules. |
✔ |
LHC Machine Committee (LMC #475) |
LHC Machine Committee (LMC #478) |
157
|
| MPP |
Comment on the possibility to test and operationally deploy blindable BLMs, in the injection region and in Point 7. |
✔ |
LHC Machine Committee (LMC #466) |
LHC Machine Committee (LMC #486) |
154
|
| LBOC |
Follow up and report back on the understanding of losses during injection. |
✔ |
LHC Machine Committee (LMC #466) |
|
153
|
| TDIS Task Force |
Report back the TDIS beam screen heating effects findings after summer 2023. |
✔ |
LHC Machine Committee (LMC #466) |
LHC Machine Committee (LMC #486) |
155
|
| TE-VSC, EN-ACE, BE-OP |
Schedule an X-rays analysis of the IR5 RF finger warm modules at the earliest opportunity. |
✔ |
LHC Machine Committee (LMC #466) |
LHC Machine Committee (LMC #474) |
156
|
| LPC, MPP |
Report back the final VeLo minimum gap strategy. |
✔ |
LHC Machine Committee (LMC #465) |
LHC Machine Committee (LMC #466) |
152
|
| LHC CSAP, BE-OP-TI |
Clarify access rules when the tunnel ventilation is in a degraded mode of operation. |
✖ |
LHC Machine Committee (LMC #465) |
|
151
|
| SY-STI |
Report on the understanding of the observations of the TDIS temperature issue and come back with a strategy to alleviate the TDIS interlock limitation. |
✔ |
LHC Machine Committee (LMC #465) |
LHC Machine Committee (LMC #466) |
150
|
| SY-EPC, EN-EL, BE-OP-TI |
Clarify and communicate the procedure for turning on the SVCs after a trip. |
✔ |
LHC Machine Committee (LMC #465) |
LHC Machine Committee (LMC #487) |
149
|
| BE-ABP |
Circulate new Reverse Polarity optics proposal to the experiments via LPC to evaluate their impact on the Forward Physics experiments. |
✔ |
LHC Machine Committee (LMC #464) |
LHC Machine Committee (LMC #465) |
148
|
| TE-VSC |
TE-VSC module task force to report back to LMC, including any possible intensity limitations, in due time. |
✔ |
LHC Machine Committee (LMC #464) |
LHC Machine Committee (LMC #477) |
147
|
| RF Burst Disc Task Force |
Report back on the feasibility of installing a new control valve with full section opening to act in a similar way to the Warm Recovery Line. |
✔ |
LHC Machine Committee (LMC #463) |
LHC Machine Committee (LMC #474) |
146
|
| SY-RF, EN-ACE, RF Burst Disc Task Force |
Investigate the preventive exchange of 2 burst discs during TS1. |
✔ |
LHC Machine Committee (LMC #463) |
LHC Machine Committee (LMC #464) |
145
|
| MPP |
Confirm the procedure for the ramp up and minimum gap for the LHCb VeLo closing. |
✔ |
LHC Machine Committee (LMC #463) |
LHC Machine Committee (LMC #465) |
144
|
| Run 3 Coordinators |
Distribute the actions collected from the YETS 2022-23 return of experience to the designated responsibles for follow-up. |
✔ |
LHC Machine Committee (LMC #462) |
LHC Machine Committee (LMC #483) |
143
|
| Collimation team |
Understand the observed impact of the TCSPM.E5R7.B1 retraction on the B1H lifetime |
✔ |
LHC Machine Committee (LMC #462) |
LHC Machine Committee (LMC #463) |
142
|
| MP3 |
Implement an automatic measurement of the circuit resistance for comparisons to their reference values during HWC. |
✔ |
LHC Machine Committee (LMC #461) |
LHC Machine Committee (LMC #467) |
141
|
| SY-EPC |
Implement the proposed changes to the procedures to avoid non-conformities similar to that of RTQX2.L5 reoccurring. |
✔ |
LHC Machine Committee (LMC #461) |
LHC Machine Committee (LMC #467) |
140
|
| LPC, MPP |
Report back on the results of the VeLo tomography (400 bunches and 6.8 TeV fill) |
✔ |
LHC Machine Committee (LMC #460) |
LHC Machine Committee (LMC #463) |
139
|
| TE-CRG, Energy Management Panel |
Establish the impact of excluding Point 4 from the economic mode configuration of the LHC cryogenic system, and report back with the recommendation. |
✔ |
LHC Machine Committee (LMC #460) |
|
138
|
| RF Burst Disc Task Force |
Formalize the procedures for a prompt intervention of the specialists in the different He venting scenarios of the RF cavities. |
✔ |
LHC Machine Committee (LMC #460) |
|
137
|
| RF Burst Disc Task Force |
Report back on the advancement on the investigations of the Point 4 event on April 1st, 2023 and the progress in the understanding the observed time delay between the release valves trigger and the premature rupture of the discs. |
✔ |
LHC Machine Committee (LMC #460) |
LHC Machine Committee (LMC #463) |
136
|
| MPP, LBOC |
Confirm the possibility to use the Beam 2 BBLR wires in operation, and determine the additional commissioning time required. |
✔ |
LHC Machine Committee (LMC #460) |
LHC Machine Committee (LMC #462) |
130
|
| SY-STI |
Notify everyone as soon as possible on the possibility to re-install the TCPCH.A4L7.B1, to be able to plan and start the bakeout of the vacuum sector. |
✔ |
LHC Machine Committee (LMC #459) |
LHC Machine Committee (LMC #460) |
131
|
| LBOC, CMS Collaboration, Triplet Task Force |
Report back after the beam-based measurements for a decision on the need for additional correction. |
✔ |
LHC Machine Committee (LMC #459) |
LHC Machine Committee (LMC #464) |
132
|
| LPC |
Quantify the effect of the crossing angle polarity change in IR1 on the FASER detector acceptance and on its overall performance. |
✔ |
LHC Machine Committee (LMC #459) |
LHC Machine Committee (LMC #460) |
134
|
| Triplet Task Force |
Report on the impact of not performing the polarity inversion of the IR1 crossing angle in 2023. |
✔ |
LHC Machine Committee (LMC #459) |
LHC Machine Committee (LMC #464) |
133
|
| SY-BI, BE-OP, EN-HE |
Agree on the notification line for removing the movable BLMs in the TCLD.A11R2.B1 and TCLD.A11L2.B2 regions before large equipment transport. |
✔ |
LHC Machine Committee (LMC #459) |
LHC Machine Committee (LMC #461) |
135
|
| LBOC |
Follow-up the TDIS temperature increase and its correlation with beam presence. |
✔ |
LHC Machine Committee (LMC #458) |
LHC Machine Committee (LMC #466) |
127
|
| SY-STI |
Report, in due time, the outcome of the quantitative assessments on the operational limits on the frequency of the beam dumps. |
✔ |
LHC Machine Committee (LMC #458) |
LHC Machine Committee (LMC #470) |
128
|
| SY-EPC |
Report on the outcome of the investigation on the non-conformity in the Point 5 RTQX2 circuit. |
✔ |
LHC Machine Committee (LMC #458) |
LHC Machine Committee (LMC #461) |
129
|
| SY-STI |
Prepare a spare collimator for the TCTV.4R1.B2. |
✔ |
LHC Machine Committee (LMC #457) |
LHC Machine Committee (LMC #458) |
126
|
| SY-BI |
Prepare and circulate an ECR on the repair proposal of the TCT wire collimators. |
✔ |
LHC Machine Committee (LMC #456) |
LHC Machine Committee (LMC #457) |
122
|
| LBOC |
Collect, analyze and discuss the TCLD.11.R2.B1 related beam observations. |
✔ |
LHC Machine Committee (LMC #456) |
LHC Machine Committee (LMC #486) |
123
|
| LHCb collaboration, TE-VSC |
Report in due time on the Phase II vacuum recovery of the LHCb VeLo. |
✔ |
LHC Machine Committee (LMC #456) |
LHC Machine Committee (LMC #457) |
124
|