tomoscan.tomoscan_32id_step
¶
Software for tomography scanning with EPICS at APS beamline 32-ID
Classes¶
- TomoScan32ID
Derived class for tomography scanning with EPICS at APS beamline 32-ID
Functions:
Software for tomography scanning with EPICS at APS beamline 32-ID |
- exception tomoscan.tomoscan_32id_step.SampleXError[source]¶
Bases:
Exception
Exception raised when SampleX is not equal to SampleInX
- class tomoscan.tomoscan_32id_step.TomoScan32IDSTEP(pv_files, macros)[source]¶
Bases:
TomoScanSTEP
Derived class used for tomography scanning with EPICS at APS beamline 32-ID
- Parameters
pv_files (list of str) – List of files containing EPICS pvNames to be used.
macros (dict) – Dictionary of macro definitions to be substituted when reading the pv_files
- begin_scan()[source]¶
Performs the operations needed at the very start of a scan.
This does the following:
Set data directory.
Set the TomoScan xml files
Calls the base class method.
Opens the front-end shutter.
Sets the PSO controller.
Creates theta array using list from PSO.
Turns on data capture.
- close_frontend_shutter()[source]¶
Closes the shutters to collect dark fields. This does the following:
Closes the 32-ID-C front-end shutter.
- close_shutter()[source]¶
Closes the shutters to collect dark fields. This does the following:
Closes the 32-ID-C fast shutter.
- end_scan()[source]¶
Performs the operations needed at the very end of a scan.
This does the following:
Calls
save_configuration()
.Put the camera back in “FreeRun” mode and acquiring so the user sees live images.
Sets the speed of the rotation stage back to the maximum value.
Calls
move_sample_in()
.Calls the base class method.
Closes shutter.
Add theta to the raw data file.
Copy raw data to data analysis computer.
- open_frontend_shutter()[source]¶
Opens the shutters to collect flat fields or projections.
This does the following:
Checks if we are in testing mode. If we are, do nothing else opens the 2-BM-A front-end shutter.
- open_shutter()[source]¶
Opens the shutters to collect flat fields or projections.
This does the following:
Opens the fast shutter.
- pv_callback_32id(pvname=None, value=None, char_value=None, **kw)[source]¶
Callback function that is called by pyEpics when certain EPICS PVs are changed
- pv_callback_step(pvname=None, value=None, char_value=None, **kw)[source]¶
Callback function that is called by pyEpics when certain EPICS PVs are changed
- set_trigger_mode(trigger_mode, num_images)[source]¶
Sets the trigger mode SIS3820 and the camera.
- Parameters
trigger_mode (str) – Choices are: “FreeRun”, “Internal”, or “PSOExternal”
num_images (int) – Number of images to collect. Ignored if trigger_mode=”FreeRun”. This is used to set the
NumImages
PV of the camera.
- wait_frontend_shutter_open(timeout=-1)[source]¶
Waits for the front end shutter to open, or for
abort_scan()
to be called.While waiting this method periodically tries to open the shutter..
- Parameters
timeout (float) – The maximum number of seconds to wait before raising a ShutterTimeoutError exception.
- Raises
ScanAbortError – If
abort_scan()
is calledShutterTimeoutError – If the open shutter has not completed within timeout value.