Three data files are generated for each data acquisition with the Mythen detector.
For instance a collection with the sample name of 'test1' will generate files named test1.raw, test1.parab and test1.xye.
Files with the extensions “raw” are comprised of the raw channel data. The files with the “parab” extension contain the meta-data. Processed data files include the files with the “xye” extension. All files will be located in the same directory, and should be COPIED by the user to their own storage media.
A number of files are produced during data collection and after processing, below is a description of these.
PARAB File
These files contain meta-data, additional information relating to the experiment. These data include: a time stamp, the data acquisition time, the integrated ion chamber counts, and the 2-theta axis position. Below is an example of the contents of a parab file.
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Thu Nov 26 18:46:30 EST 2009 |
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file name root = quartz_ht |
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run = 11 |
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acquisition time = 60.000 second(s) |
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mythen gain mode = standard |
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threshold energy = 7000 eV |
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SR10BM01ICH01:I_RAW_MON |
39935 |
Ion_Chamber_Raw_Counts |
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SR10BM01ICH01:RANGE_SP |
10pA-0.1uA |
Ion_Chamber_Gain |
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SR11BCM01:CURRENT_MONITOR |
185.162 |
Beam_Current_(mA) |
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SR10BM01DCM01:KEV_MON |
10.0081 |
Photon_Energy_(keV) |
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SR10BM01DCM01:UBRAGG_MON |
11.3935 |
Bragg_Axis_Calculated_(deg) |
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SR10BM01DCM01:BRAGG_MTR_OFFSET_MON |
0.038 |
Bragg_Axis_Offset_(deg) |
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SR10BM01MIR01:RADIUS_MON |
20.834 |
Collimating_Mirror_Radius_(steps) |
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SR10BM01MIR02:RADIUS_MON |
5.5 |
Focussing_Mirror_Radius_(km) |
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SR10BM01HU02IOC01:DIF01_B_MTR.RBV |
84.9997 |
2theta_Mythen_(deg) |
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SR10BM01HU02IOC01:DIF01_B_MTR.OFF |
-44.1254 |
2theta_Offset_Mythen_(deg) |
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SR10BM01HU02IOC01:DIF01_Y_MTR.RBV |
0.17498 |
Diffractometer_Height_(mm) |
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SR10BM01HU02IOC01:DIF01_C_MTR.RBV |
7.3104 |
omega_(deg) |
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SR10BM01HU02IOC01:SLM01_Yt2.C |
0.2 |
JJ-slit_Vertical_Size_(mm) |
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SR10BM01HU02IOC01:SLM01_Yt2.D |
4.55 |
JJ-slit_Vertical_Centre_(mm) |
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SR10BM01HU02IOC01:SLM01_Xt2.C |
2 |
JJ-slit_Horizontal_Size_(mm) |
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SR10BM01HU02IOC01:SLM01_Xt2.D |
6.10623e-16 |
JJ-slit_Horizontal_Centre_(mm) |
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SR10BM01HU02IOC01:CS700:GAS_TEMP |
0 |
Cryo_Temperature_(K) |
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SR10BM01HU02IOC01:ET:RBV_pvTemp |
0 |
Eurotherm_Temperature_(C) |
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SR10BM01HU02IOC01:FRNC:RBV_pvTemp |
610 |
Furnace_Temperature_(C) |
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SR10BM01HU02IOC01:FRNC_MTR.RBV |
-0.15 |
Furnace_Stage_Position_(mm) |
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SR10BM01HU02IOC01:SPN01_INDEX_MTR.VAL |
-5.275 |
Multisample_Spinner_Position |
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SR10BM01HU02IOC01:scaler1.S8 |
4.40399e+06 |
Integrated_Ion_Chamber_Count(counts) |
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SR10BM01HU02IOC01:scaler1.S16 |
6.0574e+07 |
Integration_Time(microseconds) |
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SR10BM01HU02IOC01:scaler1.S10 |
0 |
Integrated_Misc_Counts(counts) |
Beamline scientist, Qinfen Gu, has written a program to extract information from parab files. This can be downloaded here.
RAW Files
Contain the raw data in ‘xy’ format, where x = detector channel number and y = counts.
0 47.000000
1 43.000000
2 34.000000
3 31.000000
4 41.000000
5 33.000000
etc…
XYE Files
These are your data files, after processing, containing xye data, where x = 2-theta angle, y = corrected counts, and e = error.
82.818459 37.995037 6.164011
82.814705 36.822037 6.068116
82.810951 30.309925 5.505445
82.807198 28.574492 5.345511
82.803444 38.199272 6.180555
82.799683 31.159782 5.582094
etc…