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M. Bonesini INFN Milano

TOF plans for July BTF testbeam. M. Bonesini INFN Milano. Present design of TOF0. From D. Adams & T. Roberts simulations a 40 x 40 cm 2 active area and 4 cm segmentation BC-420 scintillator bars 40 x 4 x 2.5 cm 3 delivered by Bicron (emission peak ~390 nm)

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M. Bonesini INFN Milano

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  1. TOF plans for July BTF testbeam M. Bonesini INFN Milano M. Bonesini - PC 194 - 19-05-06

  2. Present design of TOF0 • From D. Adams & T. Roberts simulations a 40 x 40 cm2 active area and 4 cm segmentation • BC-420 scintillator bars 40 x 4 x 2.5 cm3 delivered by Bicron (emission peak ~390 nm) • lightguides UVT Repsol or BC800 plexiglas M. Bonesini - PC 194 - 19-05-06

  3. Prototype mechanics • TOF0 counters CAD design ready • scintillators delivered (Bicron BC-420) + low cost Ukrainian UPS-95F • lightguides with REPSOL Glass plexiglas + in-house machining M. Bonesini - PC 194 - 19-05-06

  4. The BTF testbeam • Testbeam 12-20 July (setting up during 7-11 July P326 testbeam) • We will try to have our DAQ based on CAEN V2718 (not use default BTF one, Labview based) • We can test TOF resolutions, not rate effects (for this we can do only lab tests with our laser system) M. Bonesini - PC 194 - 19-05-06

  5. What we plan to test in BTF, as regards TOF FEE • MICE baseline-1 solution: V1290 TDC + CF discriminator (Mb-1) • MICE baseline-2 solution: Harp splitter + V1290 TDC + QADC + L.E. discriminator. For the time being QADC will be V792, waiting for new CAEN QADC based on V1724, to be delivered end of this year (Mb-2) M. Bonesini - PC 194 - 19-05-06

  6. What is needed for TOF at BTF • TOF0 prototypes equipped with R4998 PMTS – ready • additional counters to be tested ( diff scintillator, lengths, fine mesh PMTs): useful for TOF1/2 – ready • Finger counters to define precisely beam impact point available from MEG tests - requested • HV/signal cables, splitters, NIM discriminators, VME modules – to be checked, but available • CAEN VME CF discriminators – to be requested • DAQ (JS) – ready, to be cloned in Milano • monitoring (JS) – ready • pre-test with cosmics to debug full size counters: in preparation in Milano M. Bonesini - PC 194 - 19-05-06

  7. TOF testbeam targets: • TOF0 with simple MCA • Test time resolution at various positions with simple particle • TOF0 with full DAQ • Test time resolution at various positions with single particles • Test time resolution with particle pile-up • Make comparisons with TDC+CF discriminators and TDC+QADC measurements • TOF1/2 with full DAQ • Test time resolution with cheaper UPS-95F counters • Test time resolution with bigger detectors • Test time resolution with fine-mesh 1”,1.5” PMTs M. Bonesini - PC 194 - 19-05-06

  8. Conclusions • up to now for TOF0 prototypes we are in schedule for BTF testbeam • Another testbeam (especially for calo) will be needed in September/October: think also to it • only problem organization: avoid to have ~20 people in July and maybe ~0 in forthcoming September/October tests -> proposal: to have Ludovico as BTF MICE testbeam coordinator to handle matters, also acting towards LNF management M. Bonesini - PC 194 - 19-05-06

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