diff --git a/Code/Mantid/instrument/ALF_Definition.xml b/Code/Mantid/instrument/ALF_Definition.xml
index 331f26d6a83d6e62b358c57cec515bdab2477f10..f9c2c35766952edb35428d9613ad15e9dacdead0 100644
--- a/Code/Mantid/instrument/ALF_Definition.xml
+++ b/Code/Mantid/instrument/ALF_Definition.xml
@@ -5,8 +5,8 @@
             xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
             xsi:schemaLocation="http://www.mantidproject.org/IDF/1.0 http://schema.mantidproject.org/IDF/1.0/IDFSchema.xsd"
  name="ALF" valid-from   ="1900-01-31 23:59:59"
-                        valid-to     ="2100-01-31 23:59:59"
-		        last-modified="2009-01-15 00:00:00">
+                        valid-to     ="2015-03-16 23:59:59"
+		        last-modified="2015-03-27 00:00:00">
  
    <defaults>
      <length unit="meter"/>
diff --git a/Code/Mantid/instrument/ALF_Definition_20130317-.xml b/Code/Mantid/instrument/ALF_Definition_20130317-.xml
new file mode 100644
index 0000000000000000000000000000000000000000..034b567050c4302a4700d12d652fe2e0b40d5820
--- /dev/null
+++ b/Code/Mantid/instrument/ALF_Definition_20130317-.xml
@@ -0,0 +1,789 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!-- For help on the notation used to specify an Instrument Definition File 
+     see http://www.mantidproject.org/IDF -->
+<instrument xmlns="http://www.mantidproject.org/IDF/1.0" 
+            xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+            xsi:schemaLocation="http://www.mantidproject.org/IDF/1.0 http://schema.mantidproject.org/IDF/1.0/IDFSchema.xsd"
+ name="ALF" valid-from   ="2015-03-17 00:00:00"
+                        valid-to     ="2100-01-31 23:59:59"
+		        last-modified="2015-03-27 00:00:00">
+ 
+   <defaults>
+     <length unit="meter"/>
+     <angle unit="degree"/>
+ <location r="0.0" t="0.0" p="0.0" ang="0.0" axis-x="0.0" axis-y="0.0" axis-z="1.0"/>
+     <reference-frame>
+       <!-- The z-axis is set parallel to and in the direction of the beam. the 
+        y-axis points up and the coordinate system is right handed. -->
+       <along-beam axis="z"/>
+       <pointing-up axis="y"/>
+       <handedness val="right"/>
+       <origin val="beam" /> 
+     </reference-frame>
+     <!-- Comment "components-are-facing" out if you dont want the
+     components defined in this file to face a position by default -->    
+     <components-are-facing x="0.0" y="0.0" z="0.0" />
+     <default-view view="cylindrical_y"/>
+   </defaults>
+   <!-- LIST OF PHYSICAL COMPONENTS (which the instrument consists of) -->
+   <!-- detector components -->
+    <properties>
+   </properties>
+
+   <component type="monitors" idlist="monitors">
+     <location/>
+   </component>
+<!--
+<component type="ALFpack1" idlist="ALFpack1">
+<location />
+</component>
+<component type="ALFpack2" idlist="ALFpack2">
+<location />
+</component>
+<component type="ALFpack3" idlist="ALFpack3">
+<location />
+</component> -->
+<component type="ALFdetectors" idlist="ALFdetectors">
+<location />
+</component>
+
+<!--
+<component type="ALFextratube1" idlist="ALFextratube1">
+<location />
+</component>
+<component type="ALFextratube2" idlist="ALFextratube2">
+<location />
+</component>
+-->
+<!-- source and sample-position components -->
+   <component type="undulator">
+     <location z="-14.9165"> <facing val="none"/> </location>
+   </component>
+ 
+   <component type="nickel-holder">
+     <location> <facing val="none"/> </location>
+   </component>
+ 
+   <!-- DEFINITION OF TYPES -->
+   <!-- Source types -->
+   <type name="undulator" is="Source">
+     <properties />
+     <cylinder id="some-shape">
+       <centre-of-bottom-base r="0.0" t="0.0" p="0.0" />
+       <axis x="0.0" y="0.0" z="1.0" /> 
+       <radius val="0.01" />
+       <height val="0.03" />
+     </cylinder> 
+     <algebra val="some-shape" />
+   </type>
+ 
+   <!-- Sample-position types -->
+   <type name="nickel-holder" is="SamplePos">
+     <properties />
+     <sphere id="some-shape">
+       <centre x="0.0"  y="0.0" z="0.0" />
+       <radius val="0.03" />
+     </sphere>
+     <algebra val="some-shape" />
+   </type>
+ 
+   <!-- Detectors types -->
+   <type name="monitors">
+     <component type="monitor">
+       <location r="2.03" t="180.0" p="0.0" name="monitor1" />
+       <location r="1.54" t="0.0" p="0.0" name="monitor2" />
+       <location r="4.0" t="0.0" p="0.0" name="monitor3" />
+     </component>
+   </type>
+
+<type name="ALFdetectors">
+ <component type="ALF24tubes">
+<location  x="0.7309    " z="  1.3328    "> <facing x="0" y="0" z="0"/> </location>
+ </component>
+ </type>
+
+<!-- <type name="ALFpack1">
+ <component type="ALFpack">
+<location  x="0.52833    " z="  1.4252    "> <facing x="0" y="0" z="0"/> </location>
+ </component>
+ </type>
+<type name="ALFpack2">
+ <component type="ALFpack">
+<location  x="0.7309    " z="  1.3328    "> <facing x="0" y="0" z="0"/> </location>
+ </component>
+ </type>
+<type name="ALFpack3">
+ <component type="ALFpack">
+<location  x="0.91857    " z="  1.21105    "> <facing x="0" y="0" z="0"/> </location>
+ </component>
+ </type> -->
+<!--
+<type name="ALFextratube1">
+ <component type="ALFtube">
+<location  x="1.52    " z="  -0.0200    "> <facing x="0" y="0" z="0"/> </location>
+ </component>
+ </type>
+<type name="ALFextratube2">
+ <component type="ALFtube">
+<location  x="1.52    " z="  0.0200    "> <facing x="0" y="0" z="0"/> </location>
+ </component>
+ </type>
+-->
+
+ <type name="ALF24tubes">
+ <properties />
+ <component type="ALFtube" >
+<location  x="   -0.3220    " z="  0.00000" name="tube1" />
+<location  x="   -0.2940    " z="  0.00000" name="tube2" />
+<location  x="   -0.2660    " z="  0.00000" name="tube3" />
+<location  x="   -0.2380    " z="  0.00000" name="tube4" />
+<location  x="   -0.2100    " z="  0.00000" name="tube5" />
+<location  x="   -0.1820    " z="  0.00000" name="tube6" />
+<location  x="   -0.1540    " z="  0.00000" name="tube7" />
+<location  x="   -0.1260    " z="  0.00000" name="tube8" />
+<location  x="   -0.0980    " z="  0.00000" name="tube9" />
+<location  x="   -0.0700    " z="  0.00000" name="tube10" />
+<location  x="   -0.0420    " z="  0.00000" name="tube11" />
+<location  x="   -0.0140    " z="  0.00000" name="tube12" />
+<location  x="   0.01400    " z="  0.00000" name="tube13" />
+<location  x="   0.04200    " z="  0.00000" name="tube14" />
+<location  x="   0.07000    " z="  0.00000" name="tube15" />
+<location  x="   0.09800    " z="  0.00000" name="tube16" />
+<location  x="   0.12600    " z="  0.00000" name="tube17" />
+<location  x="   0.15400    " z="  0.00000" name="tube18" />
+<location  x="   0.18200    " z="  0.00000" name="tube19" />
+<location  x="   0.21000    " z="  0.00000" name="tube20" />
+<location  x="   0.23800    " z="  0.00000" name="tube21" />
+<location  x="   0.26600    " z="  0.00000" name="tube22" />
+<location  x="   0.29400    " z="  0.00000" name="tube23" />
+<location  x="   0.32200    " z="  0.00000" name="tube24" />
+
+ </component>
+ </type>
+
+<!--
+ <type name="ALFpack">
+ <properties />
+ <component type="ALFtube" >
+<location  x="   -0.0980    " z="  0.00000" name="tube1" />
+<location  x="   -0.0700    " z="  0.00000" name="tube2" />
+<location  x="   -0.0420    " z="  0.00000" name="tube3" />
+<location  x="   -0.0140    " z="  0.00000" name="tube4" />
+<location  x="   0.01400    " z="  0.00000" name="tube5" />
+<location  x="   0.04200    " z="  0.00000" name="tube6" />
+<location  x="   0.07000    " z="  0.00000" name="tube7" />
+<location  x="   0.09800    " z="  0.00000" name="tube8" />
+ </component>
+ </type> -->
+
+<type name="ALFtube" outline="yes">
+ <component type="pixel">
+<location y=" -0.498047" />
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