Engineering 2011JunJul
TODO LIST
- Recenter champ internal mirrors while maintaining CHARA internal fringes and also keep MIRC fringes.
- Focus champ ToP mirrors.
- Start working on the automatic alignment
2011 1 July
FB: mainly worked on integrating CHAMP with chara system, which requires solving some dependencies and conflicts. This is not an easy task as a lot of the code has been duplicated into files specific to CHAMP. Vacuum pumped CHAMP in prevision for the run, pressure ~5e-6.
2011 2-3 July
FB: Went to get Xiao at the airport. Still working on the code, most of it compiles but still many issues, need to make the error() functions from CHAMP and CHARA compatible, as well as the char_waiting() function. CHAMP now cooled, pressure is high ~1.5e-6 but lots of outgassing from the inner dewar so will see when stabilized.
2011 4 July
FB: astropci_usr now compiles without errors as a CHARA server, need to check everything works.Did the internal alignment for CHAMP. Pressure is dropping, 1e-6 at the end of the day.
2011 5 July
FB: test if camera/pyramid are well aligned, more work on CHARA servers.
2011 6 July
Started working on automatic alignment.
2011 7 July
Clock issues between MIRC and CHAMP.
champdev@champ ~/control/CHAMP/spooler $ sudo ./spooler
ctime -- GMT time 2011-07-07 at 19:51:36
Unix time -- 1310068293951475528.000000
Unix time truncated -- 68293951853494.000000
mirkwood:/home/xche/MIRCFB# ./spooler
ctime -- GMT time 2011-07-07 at 19:51:36
Unix time -- 1310068296857988904.000000
Unix time truncated -- 68296858045643.000000
Difference 2.906 seconds, launching MIRC spooler after CHAMP spooler
champdev@champ ~/control/CHAMP/spooler $ sudo ./spooler
ctime -- GMT time 2011-07-07 at 19:57:20
Unix time -- 1310068638048980465.000000
Unix time truncated -- 68638049038729.000000
mirkwood:/home/xche/MIRCFB# ./spooler
ctime -- GMT time 2011-07-07 at 19:57:20
Unix time -- 1310068640444883803.000000
Unix time truncated -- 68640444909570.000000
Difference of 2.395 seconds, launching CHAMP spooler after MIRC spooler
After rebooting CHAMP, nearly no difference, 3.15 seconds, launching MIRC spooler after CHAMP spooler.
After rebooting MIRC, -0.09 seconds, launching MIRC spooler after CHAMP spooler.
champdev@champ ~/control/CHAMP/spooler $ sudo ./spooler
ctime -- GMT time 2011-07-07 at 20:08:15
Unix time -- 1310069294843309881.000000
mirkwood:/home/xche/MIRCFB# ./spooler
ctime -- GMT time 2011-07-07 at 20:08:15
Unix time -- 1310069294753602329.000000
-0.09 seconds
mirkwood:/home/xche/MIRCFB# ./spooler
ctime -- GMT time 2011-07-07 at 20:58:45
Unix time -- 1310072324484454938.000000
champdev@champ ~/control/CHAMP/spooler $ sudo ./spooler
ctime -- GMT time 2011-07-07 at 20:58:45
Unix time -- 1310072320851251127.000000
3.6 seconds
2011 10 July
We want to phase MIRC, CHAMP, and optical combiners, as well as put the vernier on the far right mirror to center of their positions. To do this
Verniers init M1 : 0.26
M2 : 5.08
M3 : 2.96
M4 : 2.98
M5 : 4.24
M6 : 3.02
M1 moved to 2.5
W1W2 on B1B2:
B2: 5.08 -> Retro = 3.35
B2: 5.0 -> Retro = 3.43
B2: 4.8 -> Retro = 3.63
B2: 4.3 -> Retro = 4.11
B2: 3.38 -> Retro = 5.02 / OK
Realigning 5.33
50 microns OPD+ on Ealing offset IR2 = 35 microns RETRO
+100 microns IR2, 5.432 -> 5.554 on newport
+500 microns IR2, 5.554 -> 6.02
M2: 3.38 -> 2.5 Newport 6.02 -> 6.854
IR2 new good position = 168360
B2B3 init retro fringes 6.731
M2 2.96 -> M3 2.5, retro 6.731 -> 7.18
IR3 init 173123
-200 Microns on IR3, retro 6.98
-1050 Microns on IR3, retro 5.94 OK
New good position for IR3, 160523
2011 July 16
(JDM) More problems with CHAMP readout. The most common symptom is that the system will return error codes during 'config camera.' The first settings always work -- including nrows, ncols, reset controller, load tim.lod, etc. The error usually start with frames per reset, nreads, and setting the bias voltages.
In order to isolate the failing compoment, we started to use MIRC hardware.
Started tests: Champ computer, Champ fiber, Champ electronics == FAIL
Champ computer, Champ fiber, MIRC electroncis == FAIL (this suggests either champ computer or champ fiber. i.e, champ electronics OK)
MIRC computer, MIRC fiber, CHAMP electrnoics == PASS (this is consistent with champ computer or champ fiber as problem
Champ computer, MIRC fiber, Champ electronics == PASS
Champ computer, CHAMP fiber, Champ electrnoics == PASS (crap! this is where we started. so the system is now working! This could mean it has to do with a blocked fiber port on the champ card. or just basic flakiness in the pci card for champ)
next step: when problem happens. first try use MIRC fiber. if that fails, then we further focus on the champ pci card. matt anderson is mailing us the spare card on monday so we can test this component separately on tuesday.
2011 July 17
(SK) CHAMP Readout problem happened again at the beginning of the day-shift. CHAMP electronics was at room temperature. Tried to reboot. Exchanged CHAMP fibers with MIRC fibers, but without success. Switched MIRC fiber pair, but without success.
