ICPPA-2015 Moscow Oct ASIC for calorimetric measurements in astrophysical experiment NUCLEON (overview) E. Atkin1, A. Voronin1,2, D. Karmanov2, I. Kudryashov2, I. Kovalev2, and V. Shumikhin1 1 National Research Nuclear University MEPhI (Moscow Engineering Physics Institute) 2 Skobeltsyn Institute of Nuclear Physics Lomonosov Moscow State University,

ICPPA-2015 Moscow Oct OUTLOOK  Project NUCLEON & Collaboration  Scientific task  Apparatus  NUCLEON ASIC  ASIC electrical & beam tests  Adjustment & calibration in Lab and the Space calibration  First space results with NUCLEON ASIC

ICPPA-2015 Moscow Oct Launching the satellite with NUCLEON apparatus 24 Dec. 2014

ICPPA-2015 Moscow Oct NUCLEON Project & NUCLEON Collaboration NUCLEON

ICPPA-2015 Moscow Oct Scientific task  The space NUCLEON project of ROSCOSMOS is designed to investigate cosmic ray nuclei energy spectra from 100 GeV to 1000 TeV and  The space NUCLEON project of ROSCOSMOS is designed to investigate cosmic ray nuclei energy spectra from 100 GeV to 1000 TeV and the cosmic ray chemical composition as well as cosmic ray electron spectra from 20 GeV to 3 TeV Supernova shock wave Cosmic rays

ICPPA-2015 Moscow Oct Experimental cosmic ray energy spectra (100 GeV to 1000 TeV for NUCLEON task)

ICPPA-2015 Moscow Oct Cosmic ray electron spectra Analyzing variations of electron spectra allow to predict physical processes in cosmic rays (dark matter)

ICPPA-2015 Moscow Oct NUCLEON Structure Charge measurement System ASIC CR-1 (MSU with ATIC, PAMELA, CREAM) Energy measurement System ASIC 32HDR14.2 IDEAS Minicalorimeter ASIC NUCLEON MEPhI-MSU Carbon target Trigger system Service electronics

ICPPA-2015 Moscow Oct Minicalorimeter, why we designed NUCLEON ASIC Separating electrons and protons showers Dynamic range > mip 6 layers Si(300 um)+W(2 Xo) Strip pitch 1 mm ASIC e p spectra

ICPPA-2015 Moscow Oct channel ASIC Architecture and Parameters The ASIC was designed in the 0.35 um CMOS technology process of AMIS (On Semi), 5 metal and 2 polysilicon layers.

ICPPA-2015 Moscow Oct channel ASIC Architecture and Parameters Double gain transfer function, dynamic range up to mip (120 pC) CSA Shaper T/H Analog channel External components for ASIC adjustment

ICPPA-2015 Moscow Oct Electrical tests charge pC Experimental transfer function Shaper output Test bench Scop picture of ASIC stage responses

ICPPA-2015 Moscow Oct Test beam at SPS, CERN MIC Trigger Energy system beam Test beam structure z Test beam composition Reconstruction of particle energy from beam data

ICPPA-2015 Moscow Oct Lab calibration procedure Because of enough complicate shape of transfer function curve, special procedure is made for Lab calibrations: Electrical ASIC parameter optimization - Adjustment CSA and shaper to obtain the maximal dynamic range of both stages - Optimization of the sampling time of the T/H circuitry to rich compromise between equal linearity and dynamic range - Output load resistor value optimization - Testing all channel performances on the ASIC to prove the optimal adjustment with internal (chip CAL System) and external (out capacitance) calibration Comparing with test beam results The second step is comparing the electrical parameters with physical response of the real particles (low energy alpha, protons and nuclei from Z=1…32) with energy up to 13 GeV/nucleon as well as electrons up to 300 GeV.) For each event, charge of particle is defined and compared with real response of MIC. Thus, the absolute calibration is done for the range 1 – 900 mip

ICPPA-2015 Moscow Oct Lab and Space calibration Result of Lab calibration ADC Blue - simulation Red – Lab calibration Lab calibration accuracy is 2 pro sent and 10 pro sent around the inflection point Impossible to make absolute calibration on orbit To improve processing data from orbit, internal calibration is to be using and correction is made by Lab calibration information as well as approximation for Z>32 pC

ICPPA-2015 Moscow Oct First space results Latitude number of events registered by NUCLEON

ICPPA-2015 Moscow Oct First space results Cosmic ray particle Energy deposit (Y axis) profile (X axis) of the minicalorimeter (6 silicon plates), obtaining by ASICs “NUCLEON” ICPPA-2015

ICPPA-2015 Moscow Oct SUMMARY  The NUCLEON ASIC is successfully developed by MSU – MEPhI collaboration for space calorimetric applications  It is first multichannel ASIC for scientific nuclear experiment fully designed in Russia  The NUCLEON ASIC is completely tested electrically and with an accelerator beams up to Z=32 and its performances confirmed choosing right schematics solutions to obtain huge dynamic range (120 pC) which is not realized for such purpose in the world yet  A special calibration method is created to get an accuracy 2 pro cent except  A special calibration method is created to get an accuracy 2 pro cent except the inflection point  Successful launching on cosmic orbit the NUCLEON apparatus in Dec 2014 and first data from its, allow to make a statement, that the ASIC is working perfectly in space up to now