Log entry time 00:32:15 on June 10, 2009

Entry number 280270

Followups:

• 280406 06/10/09 14:32 miham Quick analysis of N2 runs taken last night

We decided to take some pressure curve runs on N2. For that reason we 
vented the deuterium and put nitrogen into the reference cell. 
Here is a list of  target changes:

  Task     |     Gas     |    Left Gauge (Torr)  | Right Gauge (Psig)
----------------------------------------------------------------------
Before     |     D2      |      1(ovfl.)         |   135   
Vented     |     D2      |      761              |   000
Evacuation |     0       |      000              |   -015
N2 in      |     N2      |    866-887            |   020
Vented     |     D2      |      761              |   000
Evacuation |     0       |      000              |   -015      
-----------------------------------------------------------------------

NITROGEN RUNS at different pressures:

  Task     |     Gas     |    Left Gauge (Torr)  | Right Gauge (Psig)
----------------------------------------------------------------------
 1. Run    |     0       |      000              |   -015      
 2. Run    |     N2      |      130              |   -012
 3. Run    |     N2      |      300(1)           |   -009
 4. Run    |     N2      |      480(479)         |   -006
 5. Run    |     N2      |      630(1)           |   -003
 6. Run    |     N2      |      764              |    000
 7. Run    |     N2      |      909              |    003
 8. Run    |     N2      | 707-741 (strange)!!!  |    006
 9. Run    |     N2      | 748-752 (strange)!!!  |    009
10. Run    |     N2      | 777-790 (strange)!!!  |    012
11. Run    |     N2      | 805-821 (strange)!!!  |    015
12. Run    |     N2      | 851-852 Hm.. +-1 again|    018
-----------------------------------------------------------

After we finished with the calibration runs we left 18psig
of N2 in the reference cell.