Powering the VELO during Shift

During shift we give the VELO to the global commissioning. We retain the High and Low Voltage as we only want VELO experts operating the voltages for the safety of the detector. This will also be true for the Motion and Cooling.

If the VELO ECS top panel looks like below then the VELO is configured, control has been handed to the LHCb shift crew and you have nothing to power on:

Step 1: open the VELO ECS panel

1. Open the main Velo ECS FSM at G:\online\ecs\Shortcuts\VELO\VEECS1_UI_FSM
   
   
   
2. Right click on VELO and open the top panel
   
   
   
3. Take the project
   
   
   
4. HV and DCS (and currently monitoring) nodes are currently locked out and not under global control
   
   
   
5. HLT and other resources are currently unallocated.
   

Step 2: turn on the High Voltage (HV)

1. Click on VELO_HV
   
   
   
2. Currently HV should be off. Click VELOA_HV to go to the A side
   
   
   
3. Click VELOA_HV_Go_READY from the top menu
   
   
   
4. Click SEND_PHYSICS
   
   
   
5. The status will change to VELOA_HV_RAMPING_READY
   
   
   
6. When the voltage finishes ramping up the status will change to VELOA_HV_READY
   
   
   
7. The HV rows on the A side of the summary panel will change to green and look as follows
   
   
   
8. Start from step 1 replacing VELOA with VELOC

Step 3: turn on the Low Voltage (LV)

1. Return to the Velo top panel and click VELO_DCS_TOP to get the following panel
   
   
   
2. Click on the A side: VELOA_DCS_TOP
   
   
   
3. Switch on the Low Voltage:
   
   
   
4. When the voltage is on the panel looks like this:
   
   
   
5. And the +5V on the LV section on the Summary Panel changes to green and shows the current
   
   
   
6. Repeat for the C side starting from VELOC_DCS_TOP. Th monitoring panel should look like this: