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Official Plan. Take data with the SPD generated trigger. Delta t = 7.5 CLK + 50m fibre = 450 ns. T0. Beam passage time SPD. Have to delay by extra 150-175ns. T0 + SPD(L0A). L0A generated by Odin. Delta t = 2CLK + 100m fibre = 550 ns. L0A Arrival to CAL FE. Already Set to 4 us!.
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Official Plan • Take data with the SPD generated trigger. Delta t = 7.5 CLK + 50m fibre = 450 ns T0 Beam passage time SPD Have to delay by extra 150-175ns. T0 + SPD(L0A) L0A generated by Odin Delta t = 2CLK + 100m fibre = 550 ns L0A Arrival to CAL FE Already Set to 4 us! Add 4 us! 15 m TOF=2CLK L0A Arrival to Velo FE T0 Beam passage time VELO L0 arrival to the VELO
backup Plan • Use our ownn scintillators T0 Beam passage time through velo T scintilator deltaT0 Known deltaT1 Known L0A after Optical splitter. L0A Arrival to Beetles deltaT2 Known Set this to 4 us! deltaT3 Data cables. deltaT4 Measure Data arrival to the TELL1