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This\nis caused by the [term E / tE in the log-based weighting of\nhits](https://github.com/eic/EICrecon/blob/9d1b01ed457aa5dceb413d3dace910b2c799278b/src/algorithms/calorimetry/CalorimeterClusterRecoCoG.h#L33-L35),\nwhen [totalE is\nzero](https://github.com/eic/EICrecon/blob/9d1b01ed457aa5dceb413d3dace910b2c799278b/src/algorithms/calorimetry/CalorimeterClusterRecoCoG.cc#L204).\nThat happens when the energy in a deposited hit is zero, which happens\nwhen the [raw hit amplitude is exactly equal to the\npedestal](https://github.com/eic/EICrecon/blob/9d1b01ed457aa5dceb413d3dace910b2c799278b/src/algorithms/calorimetry/CalorimeterHitReco.cc#L189-L190).\nThat can only happen [when the threshold is set below the\npedestal](https://github.com/eic/EICrecon/blob/9d1b01ed457aa5dceb413d3dace910b2c799278b/src/algorithms/calorimetry/CalorimeterHitReco.cc#L172-L174),\nwhich is unphysical.\n\nThis PR sets the threshold for the ZDC Hcal to a physical value, based\non what it is set to for the ZDC Ecal. 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This\nis caused by the [term E / tE in the log-based weighting of\nhits](https://github.com/eic/EICrecon/blob/9d1b01ed457aa5dceb413d3dace910b2c799278b/src/algorithms/calorimetry/CalorimeterClusterRecoCoG.h#L33-L35),\nwhen [totalE is\nzero](https://github.com/eic/EICrecon/blob/9d1b01ed457aa5dceb413d3dace910b2c799278b/src/algorithms/calorimetry/CalorimeterClusterRecoCoG.cc#L204).\nThat happens when the energy in a deposited hit is zero, which happens\nwhen the [raw hit amplitude is exactly equal to the\npedestal](https://github.com/eic/EICrecon/blob/9d1b01ed457aa5dceb413d3dace910b2c799278b/src/algorithms/calorimetry/CalorimeterHitReco.cc#L189-L190).\nThat can only happen [when the threshold is set below the\npedestal](https://github.com/eic/EICrecon/blob/9d1b01ed457aa5dceb413d3dace910b2c799278b/src/algorithms/calorimetry/CalorimeterHitReco.cc#L172-L174),\nwhich is unphysical.\n\nThis PR sets the threshold for the ZDC Hcal to a physical value, based\non what it is set to for the ZDC Ecal. Happy to change it to something\nelse, but we need a realistic value here.\n\n### What kind of change does this PR introduce?\n- [x] Bug fix (issue #1583)\n- [ ] New feature (issue #__)\n- [ ] Documentation update\n- [ ] Other: __\n\n### Please check if this PR fulfills the following:\n- [ ] Tests for the changes have been added\n- [ ] Documentation has been added / updated\n- [ ] Changes have been communicated to collaborators\n\n### Does this PR introduce breaking changes? 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