Page History
Based on e-mail exchange between Mikhail, Gabriel, Jack, Faisal, Philip.
For composite detectors see EPIX10KA2M and EPIX10KAQUAD
Content
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Pictures from Gabriel's presentation
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- sensor regular pixel size 100x100 µm²,
- shown on plot gap pixels 100x250100x225 µm² and four central pixels 250x250225x225 µm².
- See plot for composite detectors in EPIX10KA2M and EPIX10KAQUAD
Configuration objects for epix10ka
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If you want to test a pixel e.g. run the internal pusler then AND its config with 0x1.
2020-06-30 Dan and Maciej about forced gain modes
Calibration rows
Each ASIC has (176+2 rows x 192 columns), the last two rows are the calibration rows. These rows are not connected to the sensor and are constructed without a pixel/sensor interface. They will be powered just like any other pixel in the ASIC, therefore, they see similar voltages, noise, etc just like other pixels.
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# psana returns 4 rows: r0, r1, r2, r3
wirebonds#|||||||||##¯¯¯¯|¯¯¯¯#...
The force switch mode should be ignored. It is a debugging mode that should not be used for calibration.
Gabriel can explain how to do the calibration if needed.
Raw data
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Command: find_detector_runs MFX epix10ka
# mfxx32516: nruns 3-377, MfxEndstation.0:Epix10ka.0, MfxEndstation.0:Epix10ka.1
# mfxx36916: runs 1-84, MfxEndstation.0:Epix10ka.1 |
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Camera1-AHL-H-Gain.txt Camera1-AHL-L-Gain.txt Camera1-AML-L-Gain.txt Camera1-AML-M-Gain.txt Camera1-FH-H-Gain.txt Camera1-FL-L-Gain.txt Camera1-FM-M-Gain.txt |
Archived in /reg/g/psdm/detector/gains/epix10k/2018-06-04-Camera1/
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#--------------------------------
# data bit 14 is moved here 1/0 for H,M/L
# / trbit 1/0 for H/M
# V / bit3 1/0 for F/A
# V / bit2 1/0 for H,M/L
# V / M mask
# V / T test gain range index
# V / / in calib files
# V V
# x111xx =28 - FH_H 0
# x011xx =12 - FM_M 1
# xx10xx = 8 - FL_L 2
# 0100xx =16 - AHL_H 3
# 0000xx = 0 - AML_M 4
# 1100xx =48 - AHL_L 5
# 1000xx =32 - AML_L 6
# 1101xx =49 - AHL_FL 7
# 1001xx =33 - AML_FL 8
#-------------------------------- |
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| Data | config | asicPixelConfigArray | |||||
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| Index | Gain mode | bit14 | trbit | bit3: ga | bit2: g | bit1: Mask | bit0: Test |
| 0 | FH_H | x | 1 | 1 | 1 | ||
| 1 |
| FM_M | x | 0 | 1 | 1 |
| 2 | FL_L | x | x | 1 | 0 |
| 3 | AHL_H | 0 | 1 | 0 | 0 |
| 4 | AML_M | 0 | 0 | 0 | 0 |
| 5 | AHL_L | 1 | 1 | 0 | 0 |
| 6 | AML_L | 1 | 0 | 0 | 0 |
| 7 | AHL Forced L | 1 | 1 | 0 | 1 | ||
| 8 | AML Forced L | 1 | 0 | 0 | 1 |
| pixel control bit array | 1<<5 =32 | 1<<4 =16 | 1<<3 =8 | 1<<2 =4 | Not used | Not used | |
Gain correction formula
corrected = (raw - pedestals)/gain
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The value (raw - pedestals) can be corrected for common mode effect.
First image below shows one epix10ka segment non-corrected image of shape (352, 384). Vertical stripes presumably arising from this hardware effect.
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NOTE: currently mask on gain mode is not applied - all pixels are corrected uniformly...used to evaluate and correct for offset.
Examples of the command to get corrected image:
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/reg/d/psdm/MFX/mfxx32516/calib/Epix10ka::CalibV1/MfxEndstation.0:Epix10ka.0/pedestals/0-end.data
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Pedestal Deployment Meeting Notes (8/2/18)
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#== type 0022 epix10ka
'DetLab.0:Epix10ka.0': 'epix10ka_0000',\
'MecTargetChamber.0:Epix10ka.0': 'epix10ka_0001',\
'MecTargetChamber.0:Epix10ka.1': 'epix10ka_0002',\
'MfxEndstation.0:Epix10ka.0': 'epix10ka_0003',\
'MfxEndstation.0:Epix10ka.1': 'epix10ka_0004',\
'MfxEndstation.0:Epix10ka.2': 'epix10ka_0005',\ |
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Composite detectors
EPIX10KA2M and EPIX10KAQUAD - composite detectors made of epix10ka panels.
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- https://github.com/slaclab/cac/tree/master/psana/epix10ka - scripts from Faisal
- https://pswww.slac.stanford.edu/apps/portal/index.php?exper_id=1107 - under Workflow -> Batch Processing - batch processing
- /reg/d/psdm/MFX/mfxx32516/results/abunimeh/2 - experimental and jupyter notebook scripts
- ePix10K Calibration, by Gabriel Blaj
- EPIX10KA2M and EPIX10KAQUAD
- Jungfrau and Epix10ka Calibration
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- 2021-09-28 learn about existence of presentation 2019-10-02-ePix10K-500um-Sensor-Geometry.pdf
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