Author: [log in to unmask]
Date: Thu Sep 1 04:23:11 2016
New Revision: 4476
Log:
added filter for events with only one trigger
Added:
java/trunk/recon/src/main/java/org/hps/recon/filtering/MonoTriggerFilterDriver.java
Added: java/trunk/recon/src/main/java/org/hps/recon/filtering/MonoTriggerFilterDriver.java
=============================================================================
--- java/trunk/recon/src/main/java/org/hps/recon/filtering/MonoTriggerFilterDriver.java (added)
+++ java/trunk/recon/src/main/java/org/hps/recon/filtering/MonoTriggerFilterDriver.java Thu Sep 1 04:23:11 2016
@@ -0,0 +1,51 @@
+package org.hps.recon.filtering;
+
+import org.lcsim.event.EventHeader;
+import org.lcsim.event.GenericObject;
+import org.lcsim.util.Driver;
+import org.hps.record.epics.EpicsData;
+import org.hps.record.scalers.ScalerData;
+import org.hps.record.triggerbank.AbstractIntData;
+import org.hps.record.triggerbank.TIData;
+/**
+ * Keep events with exactly one trigger bit.
+ * Also keep EPICS events, and Scaler events.
+ * Drop all other events.
+ *
+ * @author spaul
+ *
+ */
+public class MonoTriggerFilterDriver extends Driver
+{
+ public void process(EventHeader event) {
+
+ // 1. keep all events with EPICS data (could also use event tag = 31):
+ if (EpicsData.read(event) != null) return;
+
+ // 2. keep all events with Scaler data:
+ if (ScalerData.read(event) != null) return;
+
+ // 3. drop event if it doesn't have a TriggerBank
+ if (!event.hasCollection(GenericObject.class,"TriggerBank"))
+ throw new Driver.NextEventException();
+
+ int triggers = 0;
+ // 4. keep event if it only has one trigger bit set:
+ for (GenericObject gob : event.get(GenericObject.class,"TriggerBank"))
+ {
+ if (!(AbstractIntData.getTag(gob) == TIData.BANK_TAG)) continue;
+ TIData tid = new TIData(gob);
+ if (tid.isSingle0Trigger()) triggers++;
+ if (tid.isSingle1Trigger()) triggers++;
+ if (tid.isPair0Trigger()) triggers++;
+ if (tid.isPair1Trigger()) triggers++;
+ if (tid.isPulserTrigger()) triggers++;
+ if (tid.isCalibTrigger()) triggers++;
+ }
+ if(triggers == 1)
+ /*tab*/return;
+
+ // 5. Else, drop event:
+ throw new Driver.NextEventException();
+ }
+}
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