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The need for this detector arose after the analysis of HPS 2015 and 2016 data.
- It turned out that most of Top <-> Bottom cluster pairs from the "pair1" trigger, are the so called Wide Angle Bremsstrahlung (WAB)
- There are significant number of events where electron from the pair, travels through the ECal hole, and hence missing detection.
- At high Esum region, these events are almost equal to the number of events, where the pair electron hit's the ECal.
- Hence recovering these events, will almost double the statistics at high ESum region.
e- gamma events, vs e-e+ events | Trident events, when the electron hit the ECal, and when e- traveled through the ECal hole, and escaped the detection |
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The Engineering design of the Hodoscope |
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