diff --git a/.github/workflows/build-frozen-release-alma9.yml b/.github/workflows/build-frozen-release-alma9.yml
index e90c7dc87..fcb3b9f12 100644
--- a/.github/workflows/build-frozen-release-alma9.yml
+++ b/.github/workflows/build-frozen-release-alma9.yml
@@ -6,6 +6,9 @@ on:
       release:
         description: 'targeted release (e.g. v4.1.0)'
         required: true 
+      det:
+        description: 'detector type (nd or fd)'
+        required: true 
       build-number:
         description: 'frozen release build number, e.g. 1'
         required: true 
@@ -26,10 +29,11 @@ jobs:
       with:
         path: daq-release
 
-    - name: setup directories and install spack for the dunedaq release
+    - name: setup directories and install spack for the base release
       run: |
+          export DET=${{ github.event.inputs.det }}
           export BASE_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/dunedaq-${{ github.event.inputs.release }}-a9
-          export DET_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/fddaq-${{ github.event.inputs.release }}-a9
+          export DET_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/${DET}daq-${{ github.event.inputs.release }}-a9
           export OS=almalinux9
           export BUILD_NUMBER=${{ github.event.inputs.build-number }}
           source daq-release/.github/workflows/wf-setup-tools.sh
@@ -45,25 +49,26 @@ jobs:
         name: frozens_dunedaq
         path: ${{ github.workspace }}/tarballs_for_upload/dunedaq-${{ github.event.inputs.release }}-a9.tar.gz
 
-    - name: setup directories and install spack for the fddaq release
+    - name: setup directories and install spack for the detector release
       run: |
+          export DET=${{ github.event.inputs.det }}
           export BASE_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/dunedaq-${{ github.event.inputs.release }}-a9
-          export DET_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/fddaq-${{ github.event.inputs.release }}-a9
+          export DET_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/${DET}daq-${{ github.event.inputs.release }}-a9
           export OS=almalinux9
           export BUILD_NUMBER=${{ github.event.inputs.build-number }}
           source daq-release/.github/workflows/wf-setup-tools.sh
 
-          daq-release/scripts/spack/build-release.sh $BASE_RELEASE_DIR $DET_RELEASE_DIR fd $OS
+          daq-release/scripts/spack/build-release.sh $BASE_RELEASE_DIR $DET_RELEASE_DIR $DET $OS
 
           cd $DET_RELEASE_DIR/..
           tar_and_stage_release $DET_RELEASE_TAG
 
 
-    - name: upload spack frozen release tarball for fddaq
+    - name: upload spack frozen release tarball for detector release
       uses: actions/upload-artifact@v3
       with:
-        name: frozens_fddaq
-        path: ${{ github.workspace }}/tarballs_for_upload/fddaq-${{ github.event.inputs.release }}-a9.tar.gz
+        name: frozens_${{ github.event.inputs.det }}daq
+        path: ${{ github.workspace }}/tarballs_for_upload/${{ github.event.inputs.det }}daq-${{ github.event.inputs.release }}-a9.tar.gz
 
   update_image:
     name: update_spack_image_rc
@@ -85,16 +90,16 @@ jobs:
             mkdir -p ${GITHUB_WORKSPACE}/docker-build 
             rm -rf ${GITHUB_WORKSPACE}/docker-build/*
 
-      - name: Download spack frozen release tarball artifact for dunedaq
+      - name: Download spack frozen release tarball artifact for base release
         uses: actions/download-artifact@v3
         with:
           name: frozens_dunedaq
           path: ${{ github.workspace }}/docker-build
 
-      - name: Download spack frozen release tarball artifact for fddaq
+      - name: Download spack frozen release tarball artifact for detector release
         uses: actions/download-artifact@v3
         with:
-          name: frozens_fddaq
+          name: frozens_${{ github.event.inputs.det }}daq
           path: ${{ github.workspace }}/docker-build
 
       - name: prepare cvmfs mirror spack-frozens
@@ -109,16 +114,16 @@ jobs:
             tar xvf ../${dunedaq_tag}.tar.gz
             rm -rf ../${dunedaq_tag}.tar.gz
 
-            fddaq_tag=fddaq-${{ github.event.inputs.release }}-a9
-            tar xvf ../${fddaq_tag}.tar.gz
-            rm -rf ../${fddaq_tag}.tar.gz
+            det_tag=${{ github.event.inputs.det }}daq-${{ github.event.inputs.release }}-a9
+            tar xvf ../${det_tag}.tar.gz
+            rm -rf ../${det_tag}.tar.gz
 
-            cd ${fddaq_tag}; ln -s spack-*-gcc-* default; cd ..
+            cd ${det_tag}; ln -s spack-*-gcc-* default; cd ..
 
             cd ..
             echo "FROM ${image_name}"> Dockerfile
             echo 'MAINTAINER John Freeman "jcfree@fnal.gov"' >> Dockerfile
-            echo "ENV REFRESHED_FOR ${fddaq_tag}" >> Dockerfile
+            echo "ENV REFRESHED_FOR ${det_tag}" >> Dockerfile
             echo "COPY --from=ghcr.io/dune-daq/pypi-repo:latest /cvmfs/dunedaq.opensciencegrid.org/pypi-repo /cvmfs/dunedaq.opensciencegrid.org/pypi-repo" >> Dockerfile
             echo "ADD releases /cvmfs/dunedaq.opensciencegrid.org/spack/releases" >> Dockerfile
             echo 'ENTRYPOINT ["/bin/bash"]' >> Dockerfile
@@ -137,7 +142,7 @@ jobs:
           images: |
             ${{ matrix.image }}
           tags: |
-            type=raw,value=spack-dev-frozen-split-test
+            type=raw,value=spack-dev-frozen-split
 
       - name: Build and push Docker images
         uses: docker/build-push-action@v5
@@ -153,33 +158,33 @@ jobs:
     runs-on: ubuntu-latest
     needs: update_image
     container:
-      image: "ghcr.io/dune-daq/alma9-slim-externals:spack-dev-frozen-split-test"
+      image: "ghcr.io/dune-daq/alma9-slim-externals:spack-dev-frozen-split"
     defaults:
       run:
         shell: bash
 
     steps:
     
-    - name: create dbt-setup-release-env.sh and daq_app_rte.sh for fddaq
+    - name: create dbt-setup-release-env.sh and daq_app_rte.sh for detector release
       run: |
-          DET=fd
-          daq_tag=${DET}daq-${{ github.event.inputs.release }}-a9
+          DET=${{ github.event.inputs.det }}
+
           source /cvmfs/dunedaq.opensciencegrid.org/setup_dunedaq.sh
-          setup_dbt latest|| true
-          dbt-setup-release ${daq_tag}
+          setup_dbt latest || true
+          dbt-setup-release ${DET}daq-${{ github.event.inputs.release }}-a9
           declare -x > ${GITHUB_WORKSPACE}/${DET}daq-dbt-setup-release-env.sh
           declare -f >> ${GITHUB_WORKSPACE}/${DET}daq-dbt-setup-release-env.sh
           egrep "declare -x (PATH|.*_SHARE|CET_PLUGIN_PATH|DUNEDAQ_SHARE_PATH|LD_LIBRARY_PATH|LIBRARY_PATH|PYTHONPATH)=" ${GITHUB_WORKSPACE}/${DET}daq-dbt-setup-release-env.sh > ${GITHUB_WORKSPACE}/${DET}daq_app_rte.sh
 
 
-    - name: upload fddaq-dbt-setup-release-env.sh
+    - name: upload ${{ github.event.inputs.det }}daq-dbt-setup-release-env.sh
       uses: actions/upload-artifact@v3
       with:
-        name: fddaq-dbt_setup_release_env
-        path: ${{ github.workspace }}/fddaq-dbt-setup-release-env.sh
+        name: ${{ github.event.inputs.det }}daq-dbt_setup_release_env
+        path: ${{ github.workspace }}/${{ github.event.inputs.det }}daq-dbt-setup-release-env.sh
 
-    - name: upload fddaq_app_rte.sh
+    - name: upload ${{ github.event.inputs.det }}daq_app_rte.sh
       uses: actions/upload-artifact@v3
       with:
-        name: fddaq_app_rte
-        path: ${{ github.workspace }}/fddaq_app_rte.sh
+        name: ${{ github.event.inputs.det }}daq_app_rte
+        path: ${{ github.workspace }}/${{ github.event.inputs.det }}daq_app_rte.sh
diff --git a/.github/workflows/build-frozen-release-sl7.yml b/.github/workflows/build-frozen-release-sl7.yml
index 751ec0990..33c5e280b 100644
--- a/.github/workflows/build-frozen-release-sl7.yml
+++ b/.github/workflows/build-frozen-release-sl7.yml
@@ -1,4 +1,4 @@
-name: SL7 Build frozen release
+name: SL7 Build frozen release 
 
 on:
   workflow_dispatch:
@@ -6,6 +6,9 @@ on:
       release:
         description: 'targeted release (e.g. v4.1.0)'
         required: true 
+      det:
+        description: 'detector type (nd or fd)'
+        required: true 
       build-number:
         description: 'frozen release build number, e.g. 1'
         required: true 
@@ -26,10 +29,11 @@ jobs:
       with:
         path: daq-release
 
-    - name: setup directories and install spack for the dunedaq release
+    - name: setup directories and install spack for the base release
       run: |
+          export DET=${{ github.event.inputs.det }}
           export BASE_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/dunedaq-${{ github.event.inputs.release }}-c8
-          export DET_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/fddaq-${{ github.event.inputs.release }}-c8
+          export DET_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/${DET}daq-${{ github.event.inputs.release }}-c8
           export OS=scientific7
           export BUILD_NUMBER=${{ github.event.inputs.build-number }}
           source daq-release/.github/workflows/wf-setup-tools.sh
@@ -45,24 +49,26 @@ jobs:
         name: frozens_dunedaq
         path: ${{ github.workspace }}/tarballs_for_upload/dunedaq-${{ github.event.inputs.release }}-c8.tar.gz
 
-    - name: setup directories and install spack for the fddaq release
+    - name: setup directories and install spack for the detector release
       run: |
+          export DET=${{ github.event.inputs.det }}
           export BASE_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/dunedaq-${{ github.event.inputs.release }}-c8
-          export DET_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/fddaq-${{ github.event.inputs.release }}-c8
+          export DET_RELEASE_DIR=/cvmfs/dunedaq.opensciencegrid.org/spack/releases/${DET}daq-${{ github.event.inputs.release }}-c8
           export OS=scientific7
           export BUILD_NUMBER=${{ github.event.inputs.build-number }}
           source daq-release/.github/workflows/wf-setup-tools.sh
 
-          daq-release/scripts/spack/build-release.sh $BASE_RELEASE_DIR $DET_RELEASE_DIR fd $OS
+          daq-release/scripts/spack/build-release.sh $BASE_RELEASE_DIR $DET_RELEASE_DIR $DET $OS
 
           cd $DET_RELEASE_DIR/..
           tar_and_stage_release $DET_RELEASE_TAG
 
-    - name: upload spack frozen release tarball for fddaq
+
+    - name: upload spack frozen release tarball for detector release
       uses: actions/upload-artifact@v3
       with:
-        name: frozens_fddaq
-        path: ${{ github.workspace }}/tarballs_for_upload/fddaq-${{ github.event.inputs.release }}-c8.tar.gz
+        name: frozens_${{ github.event.inputs.det }}daq
+        path: ${{ github.workspace }}/tarballs_for_upload/${{ github.event.inputs.det }}daq-${{ github.event.inputs.release }}-c8.tar.gz
 
   update_image:
     name: update_spack_image_rc
@@ -81,16 +87,21 @@ jobs:
       contents: read
 
     steps:
-      - name: Download spack frozen release tarball artifact for dunedaq
+      - name: clean docker-build
+        run: |
+            mkdir -p ${GITHUB_WORKSPACE}/docker-build 
+            rm -rf ${GITHUB_WORKSPACE}/docker-build/*
+
+      - name: Download spack frozen release tarball artifact for base release
         uses: actions/download-artifact@v3
         with:
           name: frozens_dunedaq
           path: ${{ github.workspace }}/docker-build
 
-      - name: Download spack frozen release tarball artifact for fddaq
+      - name: Download spack frozen release tarball artifact for detector release
         uses: actions/download-artifact@v3
         with:
-          name: frozens_fddaq
+          name: frozens_${{ github.event.inputs.det }}daq
           path: ${{ github.workspace }}/docker-build
 
       - name: prepare cvmfs mirror spack-frozens
@@ -105,16 +116,16 @@ jobs:
             tar xvf ../${dunedaq_tag}.tar.gz
             rm -rf ../${dunedaq_tag}.tar.gz
 
-            fddaq_tag=fddaq-${{ github.event.inputs.release }}-c8
-            tar xvf ../${fddaq_tag}.tar.gz
-            rm -rf ../${fddaq_tag}.tar.gz
+            det_tag=${{ github.event.inputs.det }}daq-${{ github.event.inputs.release }}-c8
+            tar xvf ../${det_tag}.tar.gz
+            rm -rf ../${det_tag}.tar.gz
 
-            cd ${fddaq_tag}; ln -s spack-*-gcc-* default; cd ..
+            cd ${det_tag}; ln -s spack-*-gcc-* default; cd ..
 
             cd ..
             echo "FROM ${image_name}"> Dockerfile
             echo 'MAINTAINER John Freeman "jcfree@fnal.gov"' >> Dockerfile
-            echo "ENV REFRESHED_FOR ${fddaq_tag}" >> Dockerfile
+            echo "ENV REFRESHED_FOR ${det_tag}" >> Dockerfile
             echo "COPY --from=ghcr.io/dune-daq/pypi-repo:latest /cvmfs/dunedaq.opensciencegrid.org/pypi-repo /cvmfs/dunedaq.opensciencegrid.org/pypi-repo" >> Dockerfile
             echo "ADD releases /cvmfs/dunedaq.opensciencegrid.org/spack/releases" >> Dockerfile
             echo 'ENTRYPOINT ["/bin/bash"]' >> Dockerfile
@@ -133,7 +144,7 @@ jobs:
           images: |
             ${{ matrix.image }}
           tags: |
-            type=raw,value=spack-dev-frozen-split-test
+            type=raw,value=spack-dev-frozen-split
 
       - name: Build and push Docker images
         uses: docker/build-push-action@v5
@@ -149,33 +160,33 @@ jobs:
     runs-on: ubuntu-latest
     needs: update_image
     container:
-      image: "ghcr.io/dune-daq/sl7-slim-externals:spack-dev-frozen-split-test"
+      image: "ghcr.io/dune-daq/sl7-slim-externals:spack-dev-frozen-split"
     defaults:
       run:
         shell: bash
 
     steps:
     
-    - name: create dbt-setup-release-env.sh and daq_app_rte.sh for fddaq
+    - name: create dbt-setup-release-env.sh and daq_app_rte.sh for detector release
       run: |
-          DET=fd
-          daq_tag=${DET}daq-${{ github.event.inputs.release }}-c8
+          DET=${{ github.event.inputs.det }}
+
           source /cvmfs/dunedaq.opensciencegrid.org/setup_dunedaq.sh
-          setup_dbt latest|| true
-          dbt-setup-release ${daq_tag}
+          setup_dbt latest || true
+          dbt-setup-release ${DET}daq-${{ github.event.inputs.release }}-c8
           declare -x > ${GITHUB_WORKSPACE}/${DET}daq-dbt-setup-release-env.sh
           declare -f >> ${GITHUB_WORKSPACE}/${DET}daq-dbt-setup-release-env.sh
           egrep "declare -x (PATH|.*_SHARE|CET_PLUGIN_PATH|DUNEDAQ_SHARE_PATH|LD_LIBRARY_PATH|LIBRARY_PATH|PYTHONPATH)=" ${GITHUB_WORKSPACE}/${DET}daq-dbt-setup-release-env.sh > ${GITHUB_WORKSPACE}/${DET}daq_app_rte.sh
 
 
-    - name: upload fddaq-dbt-setup-release-env.sh
+    - name: upload ${{ github.event.inputs.det }}daq-dbt-setup-release-env.sh
       uses: actions/upload-artifact@v3
       with:
-        name: fddaq-dbt_setup_release_env
-        path: ${{ github.workspace }}/fddaq-dbt-setup-release-env.sh
+        name: ${{ github.event.inputs.det }}daq-dbt_setup_release_env
+        path: ${{ github.workspace }}/${{ github.event.inputs.det }}daq-dbt-setup-release-env.sh
 
-    - name: upload fddaq_app_rte.sh
+    - name: upload ${{ github.event.inputs.det }}daq_app_rte.sh
       uses: actions/upload-artifact@v3
       with:
-        name: fddaq_app_rte
-        path: ${{ github.workspace }}/fddaq_app_rte.sh
+        name: ${{ github.event.inputs.det }}daq_app_rte
+        path: ${{ github.workspace }}/${{ github.event.inputs.det }}daq_app_rte.sh