<div dir="ltr">Colin and all,<div><br></div>An input data file flukaaf.dat is a needed input file for running hdgeant with HADR=4. This file usually resides in $CERNLIB. If CERNLIB is defined on your system, then things should work. If not, then you should be sure to place a copy of flukaaf.dat in the directory from which you run hdgeant. A copy of this is found in the halld-sim repo in the halld software area, or on cvmfs, or on github at the link provided below. Take your pick, they should all be the same.<div><br></div><div><ul><li>/cvmfs/<a href="https://urldefense.proofpoint.com/v2/url?u=http-3A__oasis.opensciencegrid.org_gluex_group_halld_Software_builds_Linux-5FCentOS7-2Dx86-5F64-2Dgcc4.8.5-2Dcntr_cernlib_2005_lib_flukaaf.dat&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=Te_hCR4EUlJ6iCDYLJ8Viv2aDOR7D9ZZMoBAvf2H0M4&m=QG2f9vQE7ldxk7RV9G3jF_9aZp97yWwx5rU4wdkcjhs&s=KP6wTm5uQ7OUXEElVYv3SJoGpDT-CGodjZ0cbwcK_kY&e=">oasis.opensciencegrid.org/gluex/group/halld/Software/builds/Linux_CentOS7-x86_64-gcc4.8.5-cntr/cernlib/2005/lib/flukaaf.dat</a><br></li><li>/u/group/halld/Software/builds/Linux_CentOS7-x86_64-gcc4.8.5/halld_sim/halld_sim-4.13.0/src/programs/Simulation/HDGeant/flukaaf.dat<br></li><li><a href="https://urldefense.proofpoint.com/v2/url?u=https-3A__github.com_JeffersonLab_halld-5Fsim_blob_master_src_programs_Simulation_HDGeant_flukaaf.dat&d=DwMFaQ&c=CJqEzB1piLOyyvZjb8YUQw&r=Te_hCR4EUlJ6iCDYLJ8Viv2aDOR7D9ZZMoBAvf2H0M4&m=QG2f9vQE7ldxk7RV9G3jF_9aZp97yWwx5rU4wdkcjhs&s=5bZaOZ-4xWeu4c1hbhOkTnunyLJsBo-oq1ZS7pfT64w&e=">https://github.com/JeffersonLab/halld_sim/blob/master/src/programs/Simulation/HDGeant/flukaaf.dat</a><br></li></ul><div>-Richard Jones</div></div></div>