diff --git a/dc/java/dc-alignment/pom.xml b/dc/java/dc-alignment/pom.xml
index c49bd5f..5766279 100644
--- a/dc/java/dc-alignment/pom.xml
+++ b/dc/java/dc-alignment/pom.xml
@@ -3,7 +3,7 @@
     <modelVersion>4.0.0</modelVersion>
     <groupId>org.clas.detector</groupId>
     <artifactId>dc-alignment</artifactId>
-    <version>2.2</version>
+    <version>2.3</version>
     <packaging>jar</packaging>
         
     <properties>
diff --git a/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Alignment.java b/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Alignment.java
index 3c57d0b..b5d5a00 100644
--- a/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Alignment.java
+++ b/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Alignment.java
@@ -1140,6 +1140,9 @@ public static void main(String[] args){
         parser.getOptionParser("-process").addOption("-time"     , "0",            "make time residual histograms (1=true, 0=false)");
         parser.getOptionParser("-process").addOption("-residuals", "2",            "fit residuals with double gaussian (2), single gaussian (1), or use mean (0)");
         parser.getOptionParser("-process").addOption("-vertfit"  , "5",            "fit vertex plots with:\n" +
+                                                                                   "\t\t- RG-E layout (10), dual target, \n" +
+                                                                                   "\t\t- RG-A Spring18 layout (9)\n" +
+                                                                                   "\t\t- RG-K layout (8), new cryotarget, \n" +
                                                                                    "\t\t- RG-D layout (7), new cryotarget, \n" +
                                                                                    "\t\t- RG-C layout (6),\n" +
                                                                                    "\t\t- 4 gaussians (5),\n" +
@@ -1176,6 +1179,9 @@ public static void main(String[] args){
         parser.getOptionParser("-analyze").addOption("-shifts"   , "0",            "use event-by-event subtraction for unit shifts (1=on, 0=off)");
         parser.getOptionParser("-analyze").addOption("-residuals", "2",            "fit residuals (2), use mean (1), or use existing fit available (0)");
         parser.getOptionParser("-analyze").addOption("-vertfit"   , "5",           "fit vertex plots with:\n" +
+                                                                                   "\t\t- RG-E layout (10), dual target, \n" +
+                                                                                   "\t\t- RG-A Spring18 layout (9)\n" +
+                                                                                   "\t\t- RG-K layout (8), new cryotarget, \n" +
                                                                                    "\t\t- RG-D layout (7), new cryotarget,\n" +
                                                                                    "\t\t- RG-C layout (6),\n" +
                                                                                    "\t\t- 4 gaussians (5),\n" +
@@ -1207,6 +1213,9 @@ public static void main(String[] args){
         parser.getOptionParser("-fit").addOption("-shifts"   , "0",            "use event-by-event subtraction for unit shifts (1=on, 0=off)");
         parser.getOptionParser("-fit").addOption("-sector"   , "1",            "sector-dependent derivatives (1) or average (0)");
         parser.getOptionParser("-fit").addOption("-vertfit"  , "5",            "fit vertex plots with:\n" +
+                                                                               "\t\t- RG-E layout (10), dual target, \n" +
+                                                                               "\t\t- RG-A Spring18 layout (9)\n" +
+                                                                               "\t\t- RG-K layout (8), new cryotarget, \n" +
                                                                                "\t\t- RG-D layout (7), new cryotarget, \n" +
                                                                                "\t\t- RG-C layout (6),\n" +
                                                                                "\t\t- 4 gaussians (5),\n" +
diff --git a/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Constants.java b/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Constants.java
index e17b9ff..e3759fd 100644
--- a/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Constants.java
+++ b/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Constants.java
@@ -49,9 +49,9 @@ public class Constants {
     public static int NPARS = 18;
     
     // size of unit shift (cm for ri_xyz, deg for ri_cxyz
-//    public static double[] UNITSHIFT = {   0.1,    0.8,    0.2,     0.2,     0.2,     0.4,
-//                                           0.05,   0.4,    0.1,     0.2,     0.1,     0.2,
-//                                           0.1,    0.8,    0.2,     0.2,     0.1,     0.4};
+//    public static double[] UNITSHIFT = {   0.05,   0.4,    0.1,     0.1,     0.1,     0.1,
+//                                           0.025,  0.2,    0.05,    0.05,    0.05,    0.05,
+//                                           0.05,   0.4,    0.1,     0.05,    0.05,     0.05};
     public static double[] UNITSHIFT = {   0.1,    0.8,    0.2,     0.2,     0.2,     0.2,
                                            0.1,    0.8,    0.2,     0.2,     0.2,     0.2,
                                            0.1,    0.8,    0.2,     0.2,     0.2,     0.2};
diff --git a/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Histo.java b/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Histo.java
index 000631e..f6acc70 100644
--- a/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Histo.java
+++ b/dc/java/dc-alignment/src/main/java/org/clas/dc/alignment/Histo.java
@@ -937,6 +937,9 @@ private static boolean fitVertex(int mode, H1F histo) {
             case 9:    
                 Histo.fitRGKVertex(histo);
                 break;
+            case 10:    
+                Histo.fitRGEVertex(histo);
+                break;
             default:
                 if(histo.getFunction()!=null) {
                     if(histo.getFunction().getChiSquare()>0)
@@ -1552,6 +1555,75 @@ public static void fitRGAS18Vertex(H1F histo) {
 //        if(f1_vtx.getParameter(6)<f1_vtx.getParameter(0)/4) f1_vtx.setParameter(6, 0);
     }
 
+
+    /**
+     * 5-peaks vertex fitting function
+     * Peaks correspond to: target windows and scattering chamber exit window
+     * Initialized according to:
+     * - chosen target length (TARGETLENGTH), 
+     * - target exit window position (TARGETPOS)
+     * - distance between target exit window and insulation foil (WINDOWDIST)
+     * - distance between the scattering chamber exit window and the target center (SCEXIT)
+     * Includes wide Gaussians to account for target residual gas and the air 
+     * outside the scattering chamber
+     * @param histo
+     */
+    public static void fitRGEVertex(H1F histo) {
+        int nbin = histo.getData().length;
+        double dx = histo.getDataX(1)-histo.getDataX(0);
+        //find downstream window
+        int ibin0 = Histo.getMaximumBinBetween(histo, histo.getDataX(0), (Constants.TARGETPOS+Constants.SCEXIT)/2);
+        //check if the found maximum is the first or second peak, ibin is tentative upstream window
+        int ibin1 = Math.max(0, ibin0 - (int)(Constants.TARGETLENGTH/dx));
+        int ibin2 = Math.min(nbin-1, ibin0 + (int)(Constants.TARGETLENGTH/dx));
+        if(histo.getBinContent(ibin1)<histo.getBinContent(ibin2)) {
+            ibin1 = ibin0;
+            ibin0 = ibin2;
+        }
+        int ibinsc = Histo.getMaximumBinBetween(histo, (Constants.SCEXIT+Constants.TARGETCENTER)*0.8, (Constants.SCEXIT+Constants.TARGETCENTER)*1.2);
+
+        double mean  = histo.getDataX(ibin0);
+        double amp   = histo.getBinContent(ibin0);
+        double sigma = 0.5;
+        double sc    = histo.getBinContent(ibinsc);
+        double air   = histo.getBinContent(ibinsc + ((int) (sigma*6/dx)));
+        double scw   = Constants.SCEXIT;
+        if(sc>10) scw = histo.getDataX(ibinsc)-mean+Constants.TARGETLENGTH/2;
+        double bg = histo.getBinContent((ibin1+ibin0)/2);
+        String function = "[ampU]*gaus(x,[exw]-[tl],[sigma])+"
+                        + "[ampD]*gaus(x,[exw],[sigma])+"
+                        + "[ampw]*gaus(x,[exw]+[wd],[sigma])+"
+                        + "[ampw]*gaus(x,[exw]+[wd]*2,[sigma])/3+"
+                        + "[bg]*gaus(x,[exw]-[tl]/2,[tl]*0.6)+"
+                        + "[sc]*gaus(x,[exw]+[scw]-[tl]/2,[sigma])+"
+                        + "[air]*gaus(x,[exw]+[scw]-[tl]/2+[adelta],[asigma])";
+        F1D f1_vtx   = new F1D("f"+histo.getName(), function, -10, 10);
+        f1_vtx.setLineColor(2);
+        f1_vtx.setLineWidth(2);
+        f1_vtx.setOptStat("111111111111111");
+        f1_vtx.setParameter(0, amp);
+        f1_vtx.setParameter(1, mean);
+        f1_vtx.setParameter(2, Constants.TARGETLENGTH);
+        f1_vtx.setParLimits(2, Constants.TARGETLENGTH*0.9, Constants.TARGETLENGTH*1.1);
+        f1_vtx.setParameter(3, sigma);
+        f1_vtx.setParameter(4, amp);        
+        f1_vtx.setParameter(5, amp);        
+        f1_vtx.setParameter(6, Constants.WINDOWDIST);
+        f1_vtx.setParLimits(6, Constants.WINDOWDIST*0.9, Constants.WINDOWDIST*1.1);        
+        f1_vtx.setParameter(7, bg);
+        f1_vtx.setParameter(8, sc);
+        f1_vtx.setParameter(9, scw);
+        f1_vtx.setParLimits(9, (Constants.SCEXIT)*0.7, (Constants.SCEXIT)*1.3);
+        f1_vtx.setParameter(10, air);
+        f1_vtx.setParameter(11, sigma*3);
+        f1_vtx.setParLimits(11, 0, sigma*8);
+        f1_vtx.setParameter(12, sigma*8);
+        f1_vtx.setRange(mean-Constants.TARGETLENGTH*2.0,Constants.SCEXIT+Constants.TARGETLENGTH*0.6);
+//        histo.setFunction(f1_vtx);
+        DataFitter.fit(f1_vtx, histo, "Q"); //No options uses error for sigma
+//        if(f1_vtx.getParameter(6)<f1_vtx.getParameter(0)/4) f1_vtx.setParameter(6, 0);
+    }
+
     //This was a previous version of fitting the z vertex peaks
     public static void fitVertex(H1F histo) {
         double mean  = histo.getDataX(histo.getMaximumBin());