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ATLAS MDT Electronics

ATLAS MDT Electronics. Mezzanine PCB Radiation Hardness Assurance Eric Hazen – Boston University. ATLAS MDT Electronics Mezzanine PCB Rad Test Status. MDT-ASD custom CMOS IC Test program underway – no problems expected (some details from C. Posch?) AMT-2 TDC

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ATLAS MDT Electronics

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  1. ATLAS MDT Electronics Mezzanine PCB Radiation Hardness Assurance Eric Hazen – Boston University

  2. ATLAS MDT ElectronicsMezzanine PCB Rad Test Status • MDT-ASD custom CMOS IC • Test program underway – no problems expected (some details from C. Posch?) • AMT-2 TDC • Preliminary TID and SEE testing completed (results are ok) • Neutron test to be scheduled • LDO Voltage Regulators • LVDS “repeater” • Linear temperature sensor More Details in This presentation

  3. LDO Voltage Regulator • SEE/TID Test performed at Harvard Cyclotron • 165 MeV Protons / devices powered and monitored • Tested to 1.4*1012 h/cm2 per device (ATLAS SRLSEE = 4.8*1010) • No latch-up or transient events seen • TID to 100 krad per device (ATLAS SRLTID w/SF = 45 krad) • All devices failed at various doses (see plot) • Further TID testing at BNL 60Co Source • Planned for late 2001 • Neutron (NIEL) test done at Prospero (October 2001) • Just waiting for return of irradiated devices…

  4. 45 krad TPS7333QD Voltage droop 30-45 krad marginal TPS7333QD Short-circuit Failure 55-60 krad passed REG103GAPW Open-circuit Failure 18-25 krad failed Regulator output (volts) vs Ionizing Dose Powered, under nominal load for MDT use

  5. LVDS Repeater • Single LVDS Rx / Tx needed for test pulse injection • No candidates found which have already been tested! • Full test program required: • NIEL (Neutron) – PROSPERO • TID (Brookhaven) • SEE (Harvard Cyclotron)

  6. Linear Temperature Sensor • Various tested candidates exist… studying the data now. • AD590 is an expensive but apparently rad-tolerant option • What are others using?? This must be a common problem across the LHC.

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