Status of the Front-end-Electronics based on NINO ASIC for the Time-of-Flight measurements in the MPD V. A. Babkin, M.G. Buryakov, V. M. Golovatyuk, S. V. Volgin, M. M. Rumyantsev NEC-2015 TOF in MPD TOF Requirements: - TOF detector elements must function in a magnetic field - 0.5 T - High geometrical efficiency (better than 95%) - Overall time resolution better than 100 ps Number of FEE channels - 13824 (1728 chips) - TOF together with TPC must be able to identify Power of FEEs - 800 W charged hadrons and nuclear clusters in the broad Thermal power is dissipated - 15 W/m2 rapidity range and up to total momentum of 3 GeV/c 09.05.2016 M. Buryakov, NEC-2015 2 NINO ASIC • designed at CERN for the multi-Resistive Plate Chamber (RPC) TOF systems at the ALICE experiment at LHC. 25 mm CMOS technology Input impedance Power consumption Supply voltage Input peaking time Timing jitter Sustainable rate Input signal range Noise Discriminator level Outputs 8 channel/chip ~50 Ohm, adjustable 27 mW/channel +2.5 V 1 ns ~10 ps >>10 MHz/chan 30 fC – 2 pC < 2.5 x 103 10 – 100 fC LVDS other applications: • RICH detector NA62 CERN R7400 PMT readout Nucl.Phys.B, Proc. Suppl. 215 (2011) 125-127 • TOF analysis in PET Gundacker, S. et al. PoS PhotoDet2012 (2012) 016 • Multi-anode Micro-Channel Plate (MCP) PMT J. Instrum. 9 (2014) C02025 • TORCH time-of-flight detector In: J. Instrum. 9 (2014) C02025 09.05.2016 M. Buryakov, NEC-2015 3 NINO ASIC LVDS Diff. signal Input signal Input signal Low threshold level Low threshold level Time-Over-Threshold 09.05.2016 M. Buryakov, NEC-2015 Time-Over-Threshold 4 Prototype of the NINO-based FEE Output connector • • • • • • • • 3 V to 6 V power supply range LDO stabilized of the voltage (+2.5V); differential input signal; ( Zdiff = 55 Ohm) overload protection for input channels; capacitors on the inputs for double-end strip readout; CPX (InfiniBand) output transmitting line; the possibility to use as trigger (series “or” output); controlling and monitoring of the thresholds. Input connector 09.05.2016 M. Buryakov, NEC-2015 8-ch NINO 5 Testing the prototype board the timing resolution is 10.39/√2 = 7.34 ps for one channel 8-ch NINO based prototype board 09.05.2016 M. Buryakov, NEC-2015 6 Test setup of the prototype board with MRPC TDC72VHL DAQ based on VME Molex’s CXP connector system Capacitance ~40 pf Long strip readout plate in MRPC 09.05.2016 M. Buryakov, NEC-2015 7 Test results of the prototype board with MRPC on cosmic stand Yellow-Red Output signal from NINO Blue-Green Signal from MRPC Cross view of the cosmic stand MRPC NINO Diff. Amp. (x1) 09.05.2016 M. Buryakov, NEC-2015 8 Testing of the prototype TOF system General view of the “Test beam MPD” setup during working in the 51 Nuclotron run MRPC The test setup: • two platforms made of aluminum profile to fix the detectors; • the precision positioning device (precision 50 um) to move the Low voltage power supply tested detector; • three proportional chambers (MWPC 1, 2, 3) with an accuracy of of coordinate <1mm the beam of deuterons extracted from the determination • five trigger scintillation counters; Nuclotron with energy 3.5 GeV/A • two fast cherenkov counters for generating “start” signal; • two independent gas system for various gas-filled detectors with different gas mixtures; • data acquisition system (DAQ) based on the VME and Ethernet. 09.05.2016 M. Buryakov, NEC-2015 9 DAQ Results with MRPC Time-width distribution without correction. Distribution of the LVDS widths. Distribution of the LVDS widths. 09.05.2016 Voltage dependence of the time resolution and efficiency. M. Buryakov, NEC-2015 10 Outlook and Conclusion • • • • Developed 8-ch and 24-ch prototype of NINO-based FEE Optimization for full scale TOF module in progress Preparing to the spring beam test 2016 The work carried out according with the timetable Full scale assembled prototype module for TOF barrel system 09.05.2016 M. Buryakov, NEC-2015 11 Thank you for your attention! 09.05.2016 M. Buryakov, NEC-2015 12 В качестве триггерного сигнала используется сформированный сигнал с счётчиков S1-S8 включенных на совпадение. Между счётчиками расположены испытываемые детекторы. Pad RPC1, 2 – две пэдовые МРПК, Strip RPC – стриповая полноразмерная МРПК и FFD – прототип быстрого стартового детектора на основе быстрых микроканальных фотоумножителей. Таким образом, в качестве стартового детектора могли использоваться как FFD, так и одна из маленьких МРПК. Сигналы со всех МРПК снимаются усилителем NINO, который сигнал усиливает и преобразует в LVDS, ширина которого зависит от амплитуды входного сигнала. LVDS сигналы по специальному кабелю поступают на вход TDC32VL. Сигналы с FFD так же преобразуются в LVDS прямо в корпусе детектора и считываются в TDC. Все данные записываются на жёсткий диск управляющего компьютера и обрабатываются off-line. 09.05.2016 M. Buryakov, NEC-2015 13 backup Molex Connector Part Number - 76105-0584 09.05.2016 M. Buryakov, NEC-2015 14 backup Threshold Stretcher and Hyst. control 09.05.2016 M. Buryakov, NEC-2015 15 IC Layout 09.05.2016 M. Buryakov, NEC-2015 16