Speaker
Description
With the Large Hadron Collider program drawing toward its conclusion in the mid 2040s, CERN’s proposed Future Circular Collider (FCC) represents the next era of high-energy physics. The IDEA detector concept, proposed for the FCC’s electron-positron stage (FCC-ee), employs dual-readout fiber calorimetry to achieve the precision energy measurements required for this program. Texas Tech’s High Granularity Dual Readout Calorimeter (HG-DREAM) is a prototype toward realizing this technology. As part of the HG-DREAM beam tests, we constructed a scintillating fiber hodoscope tracker to record the positions of incident particles before they impact the calorimeter. The hodoscope employs two orthogonal arrays of 704 scintillating fibers, each 0.8 mm in diameter, achieving a theoretical spatial resolution of 173 μm over an active area of 4 cm × 4 cm. The readout system is comprised of 2 8x8 arrays of Onsemi 6mm silicon photomultipliers readout with 2 A5202 CAEN FERS boards. Using test beam data from CERN’s SPS H8 beam line, we measured the hodoscope’s spatial resolution to be up to 214 μm and its detector efficiency to range from 70-85%, with the lower efficiency observed for positron beams and ~85% for muon and hadronic beams. By using the hodoscope’s position reconstruction with the deposited energy in the calorimeter, we can reconstruct HG-DREAM’s individual fibers confirming the hodoscope’s suitability as a tracker.
