turbo pumps shut off due to work on cooling water system

venting and inspect the target

Wednesday, December 19, 2012, 09:43: vqacuum at 1.9E-7T, stop turbos

water cooling line valves opened. No response on vacuum TSG:IG1 3.5e-7 T

Friedhelm Ames wrote:

turbo pumps stopped to prepare for venting for anode short investigation.

 Wednesday, July 04, 2012, 13:07: Water lines purged

Found some water tripping in front of the high voltage power supplies rack from the water lines at the ceiling. Plastic sheets have been put on top of the racks and MCR has been informed.

Overview over the connections of the new 9Pin connector inside the vacuum and in the HV cage

1&2 : RFQ rods in the vacuum, RFQ Driver in HV cage

4: Repeller electrode, grounded in HV cage

5: Exit electrode , grounded in HV cage

6&7: thermocouple at the center block, w/o HV to OMEGA thermocouple display, with HV should be connected to GND with 1k-10kOhm (to allow a shift of the target)

8&9: not connected, grounded in HV cage

View on top of the feedthrough and the connector on the source tray (male connectors)

     __________________

    \    1     2      3      4      5   /

      \     6      7     8      9    /

          ----------------------  

1to1 connection for pins 1,2,4-9

Pin 3 is NOT CONNECTED

The pin pairs 1&2, 4&5, 6&7, 8&9 each use a line of twisted pairs

Wiring which was changed to run the mass marker tests has been reverted:

• anode bias cable connected to "B"
• tube negative attached to HV common through "B" to "F" connection

Ready for cathode biased FEBIAD operation.