Yu Nakazawa Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Radiation Tolerance of Readout Electronics for COMET Phase-I 1 Year-End Presentation 2017 2017.12.28 Yu Nakazawa COMET ちゃん
Yu Nakazawa Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Main topic The selection of rad-hard parts is more difficult and harder than I thought. times higher than normal one. 2 • The cost of rad-hard part is generally 10 ~ 100 • Regulator : ~10万円 • FPGA : ~100万円
Yu Nakazawa Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Outline Introduction Gamma Ray Irradiation Test Summary 3 • COMET Phase-I • Radiation Issue • Radiation effect • Setup • Result
Yu Nakazawa Year-End Presentation 2017 @Osaka Univ. (2017.12.28) COMET Phase-I 4 Purpose : Search for neutrino-less muon to electron conversion in a muonic aluminum -15 for 200 days Detector system : Cylindrical Detector System & StrEcal Signal : ~105 MeV/c electron for an aluminum target Background : Decay-In-Orbit electron & Beam related BG StrEcal (muon three body decay) • @J-PARC in JFY2018/2019 • S.E.S. ~ 3 × 10
Yu Nakazawa Year-End Presentation 2017 @Osaka Univ. (2017.12.28) 170 mm Connector LEMO (Test Board) 200 mm Regulator Cylindrical Detector System Cylindrical Drift Chamber chamber of the BElle ll detector (RECBE) Readout : Readout Electronics for the Central drift 1.67 m Momentum measurement 5 Socket RJ45 FPGA SFP slot ADC ASD E 8ch/ 8ch/ • Resolution : < 200 keV/c for 105 MeV electrons • Developed by the Belle-II CDC group • Waveform and Timing information
Yu Nakazawa r~45 cm 29th, September, 2017 COMET CM23 300 mm <上流側> FM PMT (H8409-70) Light Guide 156 mm 円周方向に48分割 110 mm 高運動量の電子をトリガーし、効率的にデータを取得する チェレンコフ検出器 プロトタイプの写真 九大で開発中のプロトタイプ 前置増幅器 ... ... データ収集系 読み出しボード (COTTRI) KEKで開発中のプロトタイプ ( トリガー検出器：デザイン シンチレータ Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Scintillator : High momentum particle Front-end Board 45 mm Cylindrical Detector System CDC Trigger counter Al target Cylindrical Trigger Hodoscope a Counter Cherenkov : Electron Photo sensor : Fine-mesh PMT Readout Front-end Board : Single-end to Differential COTTRI : CTH signal processing、Trigger decision Cylindrical Trigger Hodoscope COmeT TRIgger 150 mm 150 mm 6 pS35-2, 宮崎) n o u M
Yu Nakazawa Straw Tube Tracker 185 mm ROESTI version 3 Electron Calorimeter Straw Tube Tracker Readout : ROESTI Particle identification (e/µ/π) • Crystal : LYSO Electron Calorimeter ECAL Straw Tube Tracker Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Developed by the COMET StrECAL group • Instrument (ROESTI) Readout : Read Out Electronics for Straw Tube Resolution : < 200 keV/c for 105 MeV electrons • Momentum measurement 7 StrECAL 80 mm
Yu Nakazawa 0 x [cm] 1eV ~ 8GeV Neutron z [cm] x -1000 -1000 Year-End Presentation 2017 @Osaka Univ. (2017.12.28) -1500 -500 0 500 x [cm] Requirement for 200 days 500 0 -500 (B-filed : 1 T) Radiation level 8 PHITS Simulation for COMET Phase-I Gamma ray : ~2 kGy Neutron : ~10 12 neutrons/cm 2 (1 MeVeq.) The parts selection for the readout electronics is ongoing!! -1500 （＊）Safety factor : 10 1meV ~ 8GeV Gamma ray -1000 0 -1000 1000 z [cm] 1000 z [cm]
Yu Nakazawa Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Gamma Ray Irradiation Test 9
Yu Nakazawa make fixed charge Linear Switching Linear Negative Positive Oxide Film mobility stay and LMZ10503 Holes having smaller particle Incident + + + LT1963 MC7905 - LT3070 LTC3026 ADP7182 MAX8556 NJM2828 LT1764A MIC5271 TC59 LT1963-3.3 LT1963-1.8 L79 LTM4644 LT1963-2.5 LM337 LTM4620 - + - Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Drain Radiation effect of gamma ray 10 Deterioration of semiconductor device occur and fixed charge is generated. damage semiconductor is displaced. Gamma ray Irradiation Test（2017） - Evaluation item (Regulator) Conceptual diagram of TID Source by the Belle-II group. (~1 kGy) Gate + - - - - + + （＊）Total : 18 types + + + + • Total Ionizing Dose (TID) • Due to many radiations, ionizing effects • Degradation of specific and permanent • Displacement Damage Dose (DDD) • Due to a radiation, an atom of • 4 irradiation tests were done. • SFP (AFBR57D9AMZ) • Regulators • The RECBE board was already studied
Yu Nakazawa RTV gum (with taking data from RECBE) ex.) Radiation room Control area Cables for monitor LV Cable LV Power Supply Regulator Data Logger Regulator Test Board @Osaka Univ. Regulators Year-End Presentation 2017 @Osaka Univ. (2017.12.28) CTH Reg. RECBE source 11 Energy : 1.17 MeV, 1.33 MeV Co 60 Source : Institute Setup SFP Test Board • The Institute of Scientific and Industrial Research @Osaka Univ. (1000 ¥/hour) • Tokyo Institute of Technology Radioisotope Research Center (free)
Yu Nakazawa LT3070 (1.2) Date/Time power cycle Date/Time LT1963 LT1963-3.3 LT1963-2.5 LT3070 (1.8) LT3070 (1.2) LT3070 (1.8) LT3070 (1.0) LT3070 (1.0) Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Output voltage of regulators [V] Zoom power cycle LT1963 LT1963-2.5 → LT1963-3.3s were dead. Motivation : SFP test for RECBE Target : SFP with RECBE (test board)×2 Result : All LT3070s & LT1963-3.3 seemed to be dead after power cycle. Study : When the BIAS pins of LT3070s were applied 3.3 V, the RECBE boards worked. Output voltage of regulators [V] 1 hour : 200 Gy 1st Irradiation Test 2/7 @Osaka Univ. 12 Dose rate : 200 Gy/h • The LT1963-3.3 chip applies 3.3 V to all LT3070s. • The SFP was survive. → We could not achieve our goal. U31 U32 U33 U34 U35 U30 U28 U29 U38 6 Output voltage 5 4 3 2 1 0 02/08 13:26 02/08 13:27 Date/Time
Yu Nakazawa Target : 10 types of regulators > 3.4 LT1963-3.3 > 2.4 LT1963 Tolerance [kGy] Target Power cycle : every 200 Gy Motivation : Regulator test > 3.4 2nd Irradiation Test LT3070 Dead Increase of output V Chip4 Chip3 Chip2 Chip1 LT1963-2.5 LT1963-1.8 Year-End Presentation 2017 @Osaka Univ. (2017.12.28) 0.3 Dose rate : 200 Gy/h Survive Many regulators couldn't satisfy the requirement. 13 Result 1.7 LTM4644 LTM4620 > 3.4 0.4 LMZ10503 0.4 MAX8556 0.6 ? LT1764A 1.4 LT3070 Chip0 8/1 - 8/4 @Osaka Univ. LT1963-3.3 Chip0 Chip1 Chip2 Chip3 Chip4 LT1963-3.3 3.5 output voltage [V] LT1963-3.3 CH0 3 CH1 2.5 CH2 CH3 2 CH4 1.5 1 0.5 0 0 500 1000 1500 2000 2500 3000 3500 total dose [Gy] LT3070 1.2 output voltage [V] LT3070 CH0 1 CH1 CH2 0.8 CH3 CH4 0.6 0.4 0.2 0 0 200 400 600 800 1000 1200 1400 1600 1800 2000 2200 total dose [Gy]
Yu Nakazawa (LT3070) Year-End Presentation 2017 @Osaka Univ. (2017.12.28) LT3070 (1.8) LT3070 (1.2) LT3070 (1.8) LT3070 (1.0) LT3070 (1.2) LT3070 (1.0) After power cycle, connection error was happened. By replacing SFP, this problem was solved. (0.8 kGy) Study unstable due to high applied LT1963 voltage. after replacing LT3070. output voltage [V] total dose [Gy] Target : RECBE×1, SFP (AFBR-57D9AMZ)×1 Power cycle : every 200 Gy Result This result was different with the previous one. Lot dependence?? ADC is ”0000” Dose rate : 200 Gy/h LT1963-3.3 LT1963-2.5 8/1 - 8/4 @Osaka Univ. 14 2nd Irradiation Test Regulators on RECBE output voltage [V] reg 5 LT1963AEFE#PBF LT1963AEFE-3.3PBF • SFP : Dead (0.8 kGy) LT1963AEFE-2.5PBF LT3070IUFD (1.8V, U34) 4 • RECBE (Consistent with Belle II) LT3070IUFD (1.8V, U35) LT3070IUFD (1.0V, U30) • Regulators : the same result as chip tests LT3070IUFD (1.2V, U28) • ADC : Strange waveform data (~0.85 kGy) 3 LT3070IUFD (1.0V, U29) LT3070IUFD (1.2V, U38) 2 • VCCINT of FPGA is applied 1 V 1 • VCCINT : Internal power supply of FPGA • Absolute Maximum Rating : -0.5 ~ 1.1 V 0 0 200 400 600 800 1000 1200 • After 800 Gy, the FPGA might be total dose [Gy] • The ADC data became correct
Yu Nakazawa Year-End Presentation 2017 @Osaka Univ. (2017.12.28) Dose rate dependence ? 15 ref. “Radiation-hard power electronics for the ATLAS New Small Wheel”, TOPICAL WORKSHOP ON ELECTRONICS FOR PARTICLE PHYSICS 2014 Dose rate in COMET Phase-I : ~0.04 Gy/h is evident at lower rates by dose rate, and enhanced tolerance to ionizing radiation LTM4619 . The results are arranged in descending order Gamma irradiation results for the Linear Technologies annealing? Sample Rate Dose at Failure (Gray/Hr) (Gray) 300 1 1 50 1800 2 2 22 2300 2 3 22 2000 1 4 16 ≥ 4000 2 5 5 2 ENEA Calliope 1 Brookhaven SSIF
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