void CLSSIS3820ScalerDarkCurrentMeasurementAction::startImplementation()
{
// Must have a valid, connected scaler.
CLSSIS3820Scaler *scaler = CLSBeamline::clsBeamline()->scaler();
if (! (scaler && scaler->isConnected()) ) {
QString message = QString("There was an error measuring scaler dark current. The scaler is invalid or not connected.");
AMErrorMon::alert(this, CLSSIS3820SCALERDARKCURRENTMEASUREMENTACTION_INVALID_SCALER, message);
setFailed(message);
}
// Must have a valid dwell time.
double secondsDwell = scalerDarkCurrentMeasurementActionInfo()->dwellTime();
if (!validDwellTime(secondsDwell)) {
QString message = QString("There was an error measuring scaler dark current. The dwell time provided (%1 s) is invalid.").arg(secondsDwell);
AMErrorMon::alert(this, CLSSIS3820SCALERDARKCURRENTMEASUREMENTACTION_INVALID_DWELL_TIME, message);
setFailed(message);
}
// Update pre-measurement settings, to be restored once measurement is complete.
measurementInitialization();
// Create measurement action.
AMAction3 *measurementAction = createMeasurementAction(secondsDwell);
// Make connections and start action.
if (measurementAction) {
startedMapper_->setMapping(measurementAction, measurementAction);
failedMapper_->setMapping(measurementAction, measurementAction);
succeededMapper_->setMapping(measurementAction, measurementAction);
connect( measurementAction, SIGNAL(started()), startedMapper_, SLOT(map()) );
connect( measurementAction, SIGNAL(failed()), failedMapper_, SLOT(map()) );
connect( measurementAction, SIGNAL(succeeded()), succeededMapper_, SLOT(map()) );
measurementAction->start();
} else {
QString message = QString("There was an error measuring scaler dark current. An invalid measurement action was generated.");
AMErrorMon::alert(this, CLSSIS3820SCALERDARKCURRENTMEASUREMENTACTION_INVALID_ACTION, message);
setFailed(message);
}
}
CLSSIS3820ScalerDarkCurrentMeasurementAction::CLSSIS3820ScalerDarkCurrentMeasurementAction(CLSSIS3820ScalerDarkCurrentMeasurementActionInfo *info, QObject *parent) :
AMListAction3(info, AMListAction3::Sequential, parent)
{
CLSSIS3820Scaler *scaler = CLSBeamline::clsBeamline()->scaler();
double secondsDwell = scalerDarkCurrentMeasurementActionInfo()->dwellTime();
connect( this, SIGNAL(failed()), this, SLOT(onActionFailed()) );
if (scaler && scaler->isConnected() && secondsDwell > 0) {
// pre-measurement settings.
double oldDwell = scaler->dwellTime();
// first turn off beam.
// addSubAction(AMBeamline::bl()->createTurnOffBeamActions());
// set the scaler's dwell time to new time.
addSubAction(scaler->createDwellTimeAction3(secondsDwell));
// initiate a scaler measurement and wait until it is complete.
addSubAction(scaler->createStartAction3(true));
addSubAction(scaler->createWaitForDwellFinishedAction(secondsDwell + 5.0));
// notify attached and able scaler channel detectors that the latest measurement was a dark current measurement.
AMListAction3 *notifyChannelDetectors = new AMListAction3(new AMListActionInfo3("Set last measurement as dark current measurement", "Set last measurement as dark current measurement"));
for (int i = 0; i < scaler->channels().count(); i++) {
CLSSIS3820ScalerChannel *channel = scaler->channelAt(i);
if (channel && channel->isEnabled() && channel->detector() && channel->detector()->canDoDarkCurrentCorrection()) {
notifyChannelDetectors->addSubAction(channel->detector()->createSetLastMeasurementAsDarkCurrentAction());
}
}
addSubAction(notifyChannelDetectors);
// reset settings to pre-measurement conditions.
addSubAction(scaler->createDwellTimeAction3(oldDwell));
} else {
AMErrorMon::alert(this, CLSSIS3820SCALERDARKCURRENTMEASUREMENTACTION_SCALER_NOT_VALID, "Failed to complete dark current measurement--scaler not valid.");
setFailed();
}
}