Custom electron gun slow control Python communication library and GUI utlity
Work in progress
Communication library
The communication library from eguncom.py implements most of the
communication protocol with the electron beam slow-control system.
class ElectronGunControl
The ElectronGunControl class implements asynchronous and synchronous
communication with the serially / USB attached control system. The port file
is passed to the constructor
ctrl = ElectronGunNotConnected(portFile = '/dev/...')
When no port file is passed it defaults to /dev/ttyU0.
The exposed public methods are:
| Method | Description | Synchronous | Asynchronous callback |
|---|---|---|---|
| id() | Queries the current version | with sync = True | cbIdentify(controller, versionDate, versionRevision) |
| getPSUVoltage(channel) | Queries the current voltage on the given channel | with sync = True | cbVoltage(controller, channel, voltageVolts) |
| getPSUCurrent(channel) | Queries the current current on the given channel | with sync = True | cbCurrent(controller, channel, currentMicroamps) |
| getPSUModes() | Checks if PSUs are off, in voltage limited or current limited mode | with sync = True | cbPSUMode(controller, states) |
| getFilamentCurrent() | Queries the filament current | with sync = True | cbFilamentCurrent(controller, current) |
| off() | Disabled all high voltage and filament currents | ||
| setPSUPolarity(channel, polarity) | Sets polarity to POLARITY_POS or POLARITY_NEG | ||
| setPSUEnable(channel) | Enables the given PSU channel | ||
| setPSUDisable(channel) | Disables the given PSU channel | ||
| setPSUVoltage(channel, voltage) | Sets the given channel to the given voltage | ||
| setFilamentCurrent(currentMa) | Sets the filament current or target current to the specified milliamps | ||
| setFilamentOn() | Enabled the filament supply | ||
| setFilamentOff() | Disabled the filament supply | ||
| runInsulationTest() | Runs an insulation test with low current limits | with sync = True | cbInsulation(isOk, listOfShorts) |
| beamOn() | Runs the slow beam on sequence (slowly heating filament to previously set setFilamentCurrent, ramping up voltages) | with sync = True | cbBeamon() |
Usage example
Synchronous sample (USB / serial)
Example to perform a synchronous:
- Insulation check
- Startup for 100 mA beam current
- Looping through focus voltages
- Shutting down
with ElectronGunControl() as ctrl:
# Currently a hack to wait for the control system to reset when using the
# primary port
time.sleep(5)
# We want to see the voltages reported by the system so we
# define a lambda that just prints the voltages while ramping up
# during insulation test and beam on sequence
ctrl.cbVoltage = lambda c,chan,v : print("Voltage for channel {} is {} V".format(chan, v))
# Query it's identity
ret = ctrl.id(sync = True)
print("ID call returned {}".format(ret))
# Run insulation test
print("Running insulation test")
ret = ctrl.runInsulationTest(sync = True)
print("Insulation test returned: {}".format(ret))
# Run beam on sequence ...
ret = ctrl.beamOn(sync = True)
print("Beam on successfully returned: {}".format(ret))
print("Sweeping focus voltage")
for focusVoltage in range(1750,1950):
print("New focus voltage {}".format(focusVoltage))
ctrl.setPSUVoltage(3, focusVoltage)
time.sleep(1)
ctrl.off()
print("Off, done ...")
1 maintainer
Metadata
1 maintainer
Release files for electronsourcecontroller2-tspspi 0.0.48
For a detailed explanation of source distributions (sdists) and built distributions (wheels), please see the package formats documentation.
Source distribution (sdist)
| File | Size | Uploaded | |
|---|---|---|---|
| electronsourcecontroller2-tspspi-0.0.48.tar.gz | 18.0 kB | Details |
Built distribution (wheel)
| File | Interpreter | ABI | Platform | Reset |
|---|---|---|---|---|
| electronsourcecontroller2_tspspi-0.0.48-py3-none-any.whl | Python 3 | none | any | Details |
Total release size: 35.6 kB
Release files / electronsourcecontroller2-tspspi-0.0.48.tar.gz
| Download URL | electronsourcecontroller2-tspspi-0.0.48.tar.gz |
|---|---|
| Size | 18.0 kB |
| Tags | Source |
|
SHA-256 checksum How to use checksums |
5433e34fb4d1fce088748c6a295436ae621df6b65a96adce496f5a4a9a1a5717
|
|
BLAKE2b-256 checksum How to use checksums |
237e81d3d4a2170887b61e73ba09d83b9d63903d53c005c27880f3bb22d44b34
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
No |
| Uploaded via |
twine/4.0.0 CPython/3.8.13
|
Release files / electronsourcecontroller2_tspspi-0.0.48-py3-none-any.whl
| Download URL | electronsourcecontroller2_tspspi-0.0.48-py3-none-any.whl |
|---|---|
| Size | 17.5 kB |
| Tags | Python 3 |
|
SHA-256 checksum How to use checksums |
52874e4b71bf1f25943f91f8d52a7788f0bd4c7d31e0095fdc47b0504f5fbae5
|
|
BLAKE2b-256 checksum How to use checksums |
8a37b1856f1cba8f428082db9f2edb6538a1fda62744a4c021113f4c16ea442d
|
| Upload date | |
|
Uploaded using Trusted Publishing? What is trusted publishing? |
No |
| Uploaded via |
twine/4.0.0 CPython/3.8.13
|
