Browsing by Author "Van Mechelen, P."

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    The Effect of Radiation Damage on the Light Yield and Uniformity of Candidate Plastic Scintillator Tiles for the Cms Hadron Calorimeter Upgrade
    (Iop Publishing Ltd, 2025) Gevorgyan, A.; Petrosyan, A.; Tumasyan, A.; Van de Klundert, M.; Van Haevermaet, H.; Van Mechelen, P.; Zhokin, A.
    A study has been performed to understand the effects of radiation damage on various plastic scintillator tiles considered for a possible upgrade of the hadron calorimeter of the CMS detector. Measurements were made with unirradiated tiles and with tiles that had been irradiated in the CMS collision hall to a dose of 44 kGy. Results are presented for the tiles of different shapes in terms of the energy spectrum, efficiency as a function of the position at which each tile was hit, as well as light yield. All the tiles showed a light reduction of up to about 50%. The tiles with the shape currently used in the CMS detector did not see increased non-uniformity of light collection, while a significant disuniformity was observed for the tiles considered as alternatives.