Faculty of Physics, University of Belgrade General meeting 3 rd of June, ToF-L/R Performance Marjan Ćirković, Faculty of Physics, Belgrade

Faculty of Physics, University of Belgrade General meeting, Page 2 out of 16 Marjan Ćirković, Belgrade SHINE team General Idea Normalized QDC for each pixel Data sets: –PP158 from 2009 (~3.5 Mevents) –BeBe from 2013 (13+30 GeV, ~7Мevents) We have histo for every pixel´s count where we can check all suspicious pixels Good pixel: number of hits has to be in range of 8 sigma from average hits of neighbor pixels

Faculty of Physics, University of Belgrade General meeting, Page 3 out of 16 Marjan Ćirković, Belgrade SHINE team Determination of good pixels For counting average hits from neighbor pixels, only GOOD pixels are included; Zero-, Over- and Under- Count are excluded!

Faculty of Physics, University of Belgrade General meeting, Page 4 out of 16 Marjan Ćirković, Belgrade SHINE team Normalized QDC for ToF-L

Faculty of Physics, University of Belgrade General meeting, Page 5 out of 16 Marjan Ćirković, Belgrade SHINE team Normalized QDC for ToF-R

Faculty of Physics, University of Belgrade General meeting, Page 6 out of 16 Marjan Ćirković, Belgrade SHINE team Pixel’s hits for pp158

Faculty of Physics, University of Belgrade General meeting, Page 7 out of 16 Marjan Ćirković, Belgrade SHINE team Pixel’s status

Faculty of Physics, University of Belgrade General meeting, Page 8 out of 16 Marjan Ćirković, Belgrade SHINE team Pixel’s status

Faculty of Physics, University of Belgrade General meeting, Page 9 out of 16 Marjan Ćirković, Belgrade SHINE team Pixel’s status

Faculty of Physics, University of Belgrade General meeting, Page 10 out of 16 Marjan Ćirković, Belgrade SHINE team Pixel’s status

Faculty of Physics, University of Belgrade General meeting, Page 11 out of 16 Marjan Ćirković, Belgrade SHINE team Overall statistic Left WallRight Wall DataSet Good PixelsZeroCountUnderCountOverCountGood PixelsZeroCountUnderCountOverCount pp158(2009) (13+30)BeBe(2013)

Faculty of Physics, University of Belgrade General meeting, Page 12 out of 16 Marjan Ćirković, Belgrade SHINE team QDC for good pixel

Faculty of Physics, University of Belgrade General meeting, Page 13 out of 16 Marjan Ćirković, Belgrade SHINE team QDC for OverCount pixel

Faculty of Physics, University of Belgrade General meeting, Page 14 out of 16 Marjan Ćirković, Belgrade SHINE team QDC for UnderCount pixel

Faculty of Physics, University of Belgrade General meeting, Page 15 out of 16 Marjan Ćirković, Belgrade SHINE team Conclusion Right wall still decent: 20 dead and 41 suspicious pixels Left wall seriously damaged: 75 dead and 232 (!) suspicious pixels Most probably reason: broken or unglued PMTs Cannot be justify without opening cassettes Almost all cassettes in the left wall need repairing! Serious job: material (PMTs, scintillators), men work… Question: do we need readout upgrade in this situation?

Faculty of Physics, University of Belgrade General meeting, Page 16 out of 16 Marjan Ćirković, Belgrade SHINE team Thank you!