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Manchester status

Manchester status. Ray Thompson Stefan Soldner-Rembold Steve Snow Irina Nasteva James Mylroie-Smith Chris Jackson. Single cell status. taking data continuously Properties to measure: the three signal arrival times and amplitudes efficiencies dead time and afterpulsing

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Manchester status

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  1. Manchester status Ray Thompson Stefan Soldner-Rembold Steve Snow Irina Nasteva James Mylroie-Smith Chris Jackson

  2. Single cell status • taking data continuously • Properties to measure: • the three signal arrival times and amplitudes • efficiencies • dead time and afterpulsing • signal attenuation vs length of propagation • voltage and gas (alcohol content) dependence Manchester status

  3. Second single cell • A cell with one anode and one cathode. • under construction • will measure the field on the cathode as a function of voltage, gas content, etc. • We also need to build a 4-m long single cell to test Geiger propagation. Manchester status

  4. First 9-cell prototype • construction is completed • awaiting plumbing • no readout yet, waiting for single cell results • will test different wire configurations Manchester status

  5. Wire status • the German company Trakus are sending us 5 km each of 30, 40 and 50 micron hard-drawn (not soft annealed) wire • will receive it in 3 weeks’ time • we need to understand what values are acceptable for wire resistance • Carbon fibre wire: • ordered 5 pieces of 1.5 m each for initial tests of its properties Manchester status

  6. Data acquisition • still using 2 scopes and LabView • Scott Kolya is in contact with LAL engineers about NEMO3 readout ASIC card • we aim to have a working ASIC-based readout system by Christmas Manchester status

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