BEGIN:VCALENDAR VERSION:2.0 PRODID:-//CERN//INDICO//EN BEGIN:VEVENT SUMMARY:Position reconstruction of gamma- ray interactions in monolithic s cintillator’s DTSTART;VALUE=DATE-TIME:20190415T171000Z DTEND;VALUE=DATE-TIME:20190415T173000Z DTSTAMP;VALUE=DATE-TIME:20210410T222720Z DESCRIPTION:Speakers: Faten Alsomali ()\nIn this paper\, A 6x6x76.2mm CsI: Tl crystal coupled to two SiPMs at each end and coated with PTFE\, high re flective 3M and black tape were prepared and tested. Energy and spatial re solution of the three detectors were measured and the effect of the coatin g material on the interaction position was investigated. Spatial resolutio n measurements were carried out using a computer motorized scanning table build at the university of York. The gamma ray source was a collimated 1mm 137Cs mounted on the top of the scanning table. Measurements of the gamma ray interaction were obtained for 15 different positions. The light ratio gradient and the FWHM of the light ratio were measured for each configura tion to calculate the interaction position. The PTFE coated detector was s imulated\, and its spatial resolution was calculated using the same parame ters as our experiment which showed a good agreement.The scintillator’s surface treatment was also explored and its effect on improving the gamma ray interaction position reconstruction.\n\n 31980/contributions/3312314/ LOCATION:University of Surrey URL: END:VEVENT END:VCALENDAR