XRCF 2ND FLOOR SHIFT REPORT

Starting Date: 20 January 1997
Shift: C
File Ref: /home/xrcfdude/shiftreports/970120.C
RS/RE: WAP 
Operator: NM 
Software: 
Shift Scientist: MS 
Project Scientist: SO 

====================

Plan:
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Collect Defocus and 3-D Measurements with Penning Sources. 


Measurement Summary:
-------------------

109658       D-LXH-3D-20.012  3-D Scan, Penning 95eV LETG HSI
109659-60    D-LXH-3D-20.010  3-D Scan, Penning 95eV LETG HSI
109661       D-LXH-3D-20.004  3-D Scan, Penning 95eV LETG HSI
109662       D-LXH-dF-7.006   3-D Scan, Penning 95eV LETG HSI
109664       D-LXH-dF-7.005   3-D Scan, Penning 95eV LETG HSI
109666       D-LXH-dF-7.007A  3-D Scan, Penning 95eV - no grating HSI
109677       D-LXH-dF-7.004   3-D Scan, Penning 95eV LETG HSI
109678       D-LXH-3D-30.001  3-D Scan, Penning 95eV LETG HSI	 
109679       D-LXH-3D-20.007  3-D Scan, Penning 95eV LETG HSI

Results: 
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Supplementary Tests:
-------------------


Notes:
-----

Tube in place at beginning of shift lasted six hours; replaced 
tube at 07:00 in under an hour.

the loc file for D-LXH-3D-30.001 was modified to add fourth
point with both dy and dz < 0; we think that that the original
locations were set up erroneously.


Problems:
--------

No photons seen in fpc detectors from 109663 - 109676; setupdet
was run before starting 109677, and good spectra were then seen
in them. No apparent problem with voltages, gains, etc. The 
origin of this problem is still a total mystery,
but may indicate that blindly skipping setupdet for a large
number of similar detector config measurments may not be a good idea.