diff -u -r1.5 -r1.6
--- HpsSiSensor.java	11 Oct 2013 01:26:07 -0000	1.5
+++ HpsSiSensor.java	15 Oct 2013 22:48:27 -0000	1.6
@@ -31,6 +31,7 @@

 	Map<Integer,Double> gainMap = new HashMap<Integer,Double>();
 	Map<Integer,double[]> pulseParameterMap = new HashMap<Integer,double[]>();
 	Set<Integer> badChannels = new HashSet<Integer>();

+	double timeShift = Double.NaN;

 		
 	/**
 	 * This class constructor matches the signature of <code>SiSensor</code>.

@@ -150,7 +151,7 @@

 	 */
 	public boolean isBadChannel(int channel) {
 		return badChannels.contains(channel);

-	}

+	}	

 	
 	/**
 	 * Get the total number of channels in the sensor.

@@ -192,6 +193,14 @@

 	public int getLayerNumber() {
 		return getIdentifierHelper().getValue(getIdentifier(), "layer");
 	}

+	
+	/**
+	 * Get the time shift for this sensor.
+	 * @param ts The time shift for this sensor.	
+	 */
+	public double getTimeShift() {
+		return timeShift;
+	}

 
 	/**
 	 * Create an identifier for a channel.

@@ -287,6 +296,14 @@

 	}
 	
 	/**

+	 * Get the time shift for this sensor.
+	 * @param ts The time shift for this sensor.	
+	 */
+	public void setTimeShift(double timeShift) {
+		this.timeShift = timeShift;
+	}
+	
+	/**

 	 * Reset the time dependent conditions data of this sensor.
 	 * This does NOT reset the sensor setup information, which is
 	 * assumed to be fixed once it is setup for a given session.