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Abstract
Shashlik calorimeters equipped with a compact readout based on Silicon PhotoMultipliers can be longitudinally segmented by directly coupling the WLS fibers with the photosensors thus embedding the readout in the bulk of the calorimeter. Results on energy resolution and particle identification for such calorimeters are presented. The SiPMs for the readout have also been characterized after being exposed to neutron fluences up to 2×1011 n/cm2 (1 MeV eq.). Alternative options for the active material were also investigated; we studied in particular polysiloxane as a substitute for plastic scintillator.
Highlights
Shashlik calorimeters are sampling calorimeters in which the light collection is performed by WLS fibers that cross perpendicularly the tiles of absorbing and scintillating material [1], [2]
Shashlik calorimeters equipped with a compact readout based on Silicon PhotoMultipliers can be longitudinally segmented by directly coupling the WLS fibers with the photosensors embedding the readout in the bulk of the calorimeter
For the ENUBET project [3], [4], shashlik calorimeters are combined with a compact readout based on SiPMs, avoiding the fiber bundling; each WLS fiber is coupled with a SiPM mounted on a custom Printed Circuit Boards (PCBs) and embedded in the calorimeter structure
Summary
Shashlik calorimeters are sampling calorimeters in which the light collection is performed by WLS fibers that cross perpendicularly the tiles of absorbing and scintillating material [1], [2]. Shashlik calorimeters equipped with a compact readout based on Silicon PhotoMultipliers can be longitudinally segmented by directly coupling the WLS fibers with the photosensors embedding the readout in the bulk of the calorimeter.
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