1 Operations • CSC is stable running since HI run has started. • The low CSC occupancy in HI running allows us to operate all HV channels at nominal values • Experts have found a bug in the DCC firmware which may be the origin of the CSC loss of efficiency at high readout rate • CSC plans to implement the CMS- wide plan of action to recover from and mitigate SEUsThe plan for the LHC YETS has been developed.
Operations
Feb 24, 2016
CSC is stable running since HI run has started. The low CSC occupancy in HI running allows us to operate all HV channels at nominal values Experts have found a bug in the DCC firmware which may be the origin of the CSC loss of efficiency at high readout rate - PowerPoint PPT Presentation
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1
Operations• CSC is stable running since HI run has
started. • The low CSC occupancy in HI running
allows us to operate all HV channels at nominal values
• Experts have found a bug in the DCC firmware which may be the origin of the CSC loss of efficiency at high readout rate
• CSC plans to implement the CMS-wide plan of action to recover from and mitigate SEUsThe plan for the LHC YETS has been developed.
2
Status of the CSC plan for the LHC winter shutdown
M. Ignatenko (UCLA)CSC Operation and DPG meeting
CERNJanuary 11, 2012
3
A source of bad vacuum at -18 m away from IP
A good news: a source of the bad vacuum at -18 m away from interaction point has been found. The decision to replace a bad element has been taken.It will delay the LHC start for 1 week.
Radiation survey of the beam pipe area on minus side of the CMS
4
Turbine replacement for X3J31 rack
The turbine in the X3J31 rack had a broken cable, which jeopardized reading temperature sensors.During the turbine replacement 4 optical cables and 1 TMB were damaged.
The damaged fibers and the TMB have been replaced.
5
TMB 3.3 V fuses replacement
• Silver plated 3.3 V fuses have been replaced by gold plated ones on 50 TMBs.
We didn’t replaced the fuses on TMBs which have 3.3 V readings bigger than 3.16 V and where the access is blocked by 2 layers of skew clear cables.
6
Things to do before January 17
1. LV connectivity test for 9 CSCs. 2. Maratons and heat exchangers vacuum cleaning in UXC. 3. OPFCs and heat exchangers vacuum cleaning in USC. 4. Hardware preparation for the SYSTEC CAN-Bus controller test.
7
ME4/2 post installation
The post installation for ME42 chambers is going on.
Take into account one week delay in the CMS schedule we can better reschedule all hardware jobs.
8
Not urgent jobs• Racks inspection and missing part
installation (air reflectors, front panels etc…)
• Temperature sensors commissioning in UXC/USC.
9
Shift-leader and central DCS shifter request
Available shift-leader shifts in January 2012
There is a good opportunity to download (refresh) firmware to the CFEB and DMB EPROMs on
January 21-22
10
Available shift-leader shifts in February 2012
11
Available central DCS shifts
January 2012
All February central DCS shifts are taken.
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