def SetDetectorEnergy(radiation=None, **value):
"""For all default detectors set with `SetDetectors()` either load the
predefined settings for that are suitable for usage with silver, chromium,
copper, iron or molybdenum radiation or set the x-ray and threshold energy
to any other appropriate values.
The following keyword arguments are accepted:
* *xray* -- x-ray energy in kilo electron volt
* *threshold* -- threshold energy in kilo electron volt
* *wait* -- whether the command should wait until all detectors
completed the parameter update (defaults to 'True')
Examples:
>>> # load predefined settings for copper radiation
>>> SetDetectorEnergy('Cu')
>>>
>>> # set energy values explicitly
>>> SetDetectorEnergy(xray= 9.243, threshold= 8.0)
>>>
>>> # load predefined settings for silver radiation and return immediately
>>> SetDetectorEnergy('Ag', wait=False)
"""
wait = value.pop('wait', True)
configured = []
for det in session.experiment.detectors:
for ch in det._channels:
if hasattr(ch, 'setEnergy'):
configured.append(det)
ch.setEnergy(radiation, **value)
break # maximum one channel per detector can set energy
if wait:
device.wait(*configured)
def set_cascade():
"""Set Cascade Frequency Generator Freqs and Trigger."""
echotime = session.getDevice('echotime')
psd_chop_freq = session.getDevice('psd_chop_freq')
psd_timebin_freq = session.getDevice('psd_timebin_freq')
fg_burst = session.getDevice('fg_burst')
tau = echotime.target
f1 = echotime.currenttable[tau]['cbox_0a_fg_freq']
f2 = echotime.currenttable[tau]['cbox_0b_fg_freq']
move(psd_chop_freq, 2 * (f2 - f1))
move(psd_timebin_freq, 32 * (f2 - f1))
move(fg_burst, 'arm')
move(fg_burst, 'trigger')
wait()
def zero():
"""Shut down all (static) power supplies."""
ps = [
'hrf_0a', 'hrf_0b', 'hrf_1a', 'hrf_1b', 'hsf_0a', 'hsf_0b', 'hsf_1',
'sf_0a', 'sf_0b', 'sf_1', 'gf1', 'gf2', 'gf4', 'gf5', 'gf6', 'gf7',
'gf8', 'gf9', 'gf10', 'nse0', 'nse1'
]
for powersupply in ps:
powersupply = session.getDevice(powersupply)
move(powersupply, 0.001)
wait()
# Stop regulation and turn fg_amp off
stop('cbox_0a_reg_amp', 'cbox_0b_reg_amp', 'cbox_1_reg_amp')
maw('cbox_0a_fg_amp', 0.001, 'cbox_0b_fg_amp', 0.001, 'cbox_1_fg_amp',
0.001)
def test_stop_privileged(self, session, log):
# Change the user level to lower access rights to check that the stop
# on higher level requesting devices will be ignored
AddSetup('device')
motor = session.getDevice('motor')
pdev = session.getDevice('privdev')
speed = pdev.speed
pdev.speed = motor.speed = 0.1
move(pdev, 10, motor, 10)
with session.withUserLevel(GUEST):
assert pdev.status(0)[0] == devstatus.BUSY
assert motor.status(0)[0] == devstatus.BUSY
assert raises(AccessError, pdev.stop)
stop(pdev, motor)
wait(motor)
assert motor.status(0)[0] == devstatus.OK
assert pdev.status(0)[0] == devstatus.BUSY
stop(pdev)
wait(pdev)
assert pdev.status(0)[0] == devstatus.OK
pdev.speed = motor.speed = speed
def test_wait(self, session, log):
"""Check wait() command."""
motor = session.getDevice('motor')
tdev = session.getDevice('tdev')
tdev._status_exception = NicosError('expected failed status')
move(motor, 10)
wait(motor, 0.1)
# session.log.error('expl. devices: %r', session.explicit_devices)
wait()
with log.assert_errors(r'expected failed status'):
wait(tdev)
tdev._status_exception = None
def setecho(time):
"""Wrap setting of an echotime."""
echotime = session.getDevice('echotime')
move(echotime, time)
# set_cascade()
wait(echotime)