Commissioning the Coordinate Detector for the Super BigBite Spectrometer (SBS)

The Coordinate Detector (CDet) is a 2352-channel two-layer scintillator hodoscope being commissioned for use with the Super Bigbite Spectrometer (SBS) in the nucleon form factor experiments at the Thomas Jefferson National Accelerator Facility (JLab). The coordinate detector will provide supplemental charged particle tracking data, with a resolution of 2 mm which is important for elastic event identification given the very large projected luminosity of 1039 Hz/cm2. Each scintillator paddle in the detector has a wavelength-shifting optical fiber through the middle of it which is connected to a single pixel of a multi-anode photomultiplier tube. An overview of the detector and the commissioning efforts, including determining the threshold and efficiency of every channel and reducing crosstalk between channels, will be presented.