1. 1 OperationsOperations 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. 2 Status of the CSC plan for the LHC winter shutdown M. Ignatenko (UCLA) CSC Operation and DPG meeting CERN January 11, 2012

3. 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. 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5. 5 TMB 3.3 V fuses replacement Silver plated 3.3 V fuses have been replaced by gold plated ones on 50 TMBs.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. 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. 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. 8 Not urgent jobs Racks inspection and missing part installation (air reflectors, front panels etc…) Temperature sensors commissioning in UXC/USC.

9. 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. 10 Available shift-leader shifts in February 2012

11. 11 Available central DCS shifts January 2012 All February central DCS shifts are taken.