Continued transimssion test:
 -> 2.7 inch coupler
 -> Ge detector touching guide
 -> Cold neutron detector on beam guide downstream from PPM

SDAQ    FDAQ                           Main       GV Mon
run#    run#     Test Guide            Counts     Counts    Comments
----------------------------------------------------------------------------------
426     11609    33" EP DLC Cu 2.7OD   -          -         detector HV off
427     11610    33" EP DLC Cu 2.7OD   17018      19743     Al exposed 
428     11611    33" EP DLC Cu 2.7OD   28240      30884
429     11612    Background            36         19453     Background for Ge detector

Ge gamma and cold neutron detection geometry:
-> Removed upstream Ni/TPX pin hole 
-> Moved Ni foil w/ off-axis 15/64" hole to downstream side of the guide (hole @12:30)
-> Strapped cold neutron detector to guide

First guide tested
-> 33" DLC Cu 2.75" OD guide.
-> GV 104s on/51s off

Ge gamma and cold neutron detection guide test summary:

SDAQ    FDAQ                           Main       GV Mon
run#    run#     Test Guide            Counts     Counts    Comments
----------------------------------------------------------------------------------
430     11613    33" EP DLC Cu 2.7OD   -          -         junk run: microphonics in CNC   
431     11614    33" EP DLC Cu 2.7OD   -          -         GV 104s on, 51s off
432     11615    EP Cu 2.75" OD        -          -         Junk run, main HV off
433     11616    EP Cu 2.75" OD        -          -         GV 104s on, 51s off

Continuation of Guide Evaluations:

 -> All runs this series at beam height.
 -> Timing for Ge gamma/CN measurements: 104s GVopen, beam ON | 51s GVclosed, beam ON
 -> Ge detector always pushed up until it touches test guide.
 -> Transmission measurements with an upstream pinhole as before, TPX on downsatream side,
    Ni on upstream side.
 -> The bottling measurements in this series use the same upstream aperture as used previously,
    but use a 21/64" or 15/32" dia hole in a Ni foil as the downstream aperture (~twice or ~four times
    the area of the previous aperture). Timing is as before, 120s GVopen, BEAMon and 120s GVcolsed, BEAMoff.
    Viewed looking downstream, the upstream aperture is at 9 o'clock and the downstream aperture
    is at 3 o'clock.


sdaq   fdaq                                                     Main     Mon
run#   run#    Guide                        Measurement Type    Counts   Counts   Comments
------------------------------------------------------------------------------------------------------
435    11618   2.75OD EP SS                 Ge gamma/CN         --      --        logger died ~30min into run
435    11620   2.75OD EP SS                 Ge gamma/Cn         --      --        restarted fdaq for remainder of run
438    11621   2.75OD EP Cu 39.53"          transmission        43629   41830     consistency check of earlier run (Cu guide 0.4" past Al adapter, UCN flow in same dir through tube), trans ~92.5%
439    11622   2.75OD DLC Cu 39.37"         transmission        48000   48440     consistency check of earlier run (Cu guide 0.4" past Al adapter, UCN flow same dir through tube), trans ~87.8%
441    11623   2.75OD DLC Cu 39.37"         bottling (21/64")   --      --        cycles: 16 ld cnts: 19549 eq rate: 249.4 dr cnts: 6614 ld tc: 44.7 dr tc: 27.4 mon cnts: 9558
443    11625   2.75OD DLC Cu 39.37"         bottling (15/32")   --      --        cycles: 16 ld cnts: 10239 eq rate: 106.0 dr cnts: 1411 ld tc: 23.6 dr tc: 13.0 mon cnts: 5626  -> number for last 10 cycles only
444    11626   3" H-DLC SS after D2 plasma  Ge gamma/CN         --      --

Set of Sunday night runs (updated throughout the night):
-------------------------------------------------------------------

Ge detector/CN detector with 2.75" OD, 39.53" long SS guide..................COMPLETED
Transmission test of 2.75" OD, 39.53" long EP Cu guide.......................COMPLETED
Transmission test of 2.75" OD, 39.37" long DLC Cu guide......................COMPLETED
Bottling with different downstream aperture (21/64" dia), 2.75" OD, 39.37" long DLC Cu....COMPLETED
Bottling with different downstream aperture (15/32" dia), 2.75" OD, 39.37" long DLC Cu....COMPLETED


Ge detector/CN detector with deuterated Tex...........IN PROGRESS
Bottling with Tex..........................later

Fast 11628 Chris 446,447 4" Ep SS, shield wall guide ,7/16" pinholes, Ni foil ends, Load120, Derain120

If beam stays on tomorrow for a while I would like to add a double pinhole quartz bottle measurement.  
Also possible would be a measurement looking at mixing of high and low angular momentum trajectories.

Melting out UCN source.
D2 tank 9 mbar.
Setting He flow to 1.5 VDC ( distilling source).
Check valve by pass open
Source turbo on
Green valve closed
Orange valve closed
Source at 157 K
Closed SV3, SV5
Turned off source turbo and scroll
Valved off insulating vacuum and turned of turbo.
Turning off d2 cart scroll.

List for down time - please add to this:

Milking station to PPM LHe line.
Fix leaks in shielding.
Fix UCN source valve.
Move electronics from under beamline
Manifold for pumping out source insulating vacuum and transfer lines.
Fix blower
Larger D2 return line.
Larger D2 pressure relief.
HV trip when N2 pressure to low.
AC coupled or stable amplifiers.
Fix LS 231
Refill and test UCN detectors
New board CC1 CC2
O2 monitors - new batteries
Valve drive system
Rebiuld UCN gatevalve, add differential pumpng and pressure guage into DAQ
RGA scan of D2 in tank.

SOurce melted
Source pumpedout.
134Guide pressure
1240 D2 tank pressure

Plot of source distillation - some sign of contamination