T.Gogami Water Cherenkov detector Number of photoelectrons were: 57.4±0.5 (H6522×2) 39.7±0.4 (H11284×1) Cap design for window test was done. Simulation with Geant4 is in progress. Effective speed of light in S-2S TOF detector: 1.57±0.01 m/s → Path length is effectively longer by 20%. S.Kanatsuki ({{:kanatsuki:Stsmeeting141111.pptx|pptx}}) SDC2 Matching of ADC card with a connector of the chamber is confirmed. Design is almost completed. HV line of center part will be separated from others. Magnetic field calculation for Q2 magnet with Opera-3D(TOSCA) Comparison of a measured magnetic field (2500 A) with a TOSCA calculation with current of 2700 A. --> Still the calculation is less than the measurement. Found asymmetry in y-axis which might be caused by a platform of magnetic field measurement. → Need to be confirmed in further study with TOSCA. Simulation for PRE-E05 experiment with SKSMinus Background rate from K- beam decay: 10-3 [/K-] (Dominant source is π+) Background rate from reactions will be studied. Schedule Pre-meeting with E13 group: 2014/11/13 or 14 ? Next S-2S meeting: 2014/11/18 (Tue) 10:30- K1.8 beam time meeting: 2014/11/19 (Wed)IMPORTANT!!!