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Progress Update on ATLAS MDT Electronics Mezzanine PCB Radiation Hardness Assurance Testing

This presentation outlines the current status of the ATLAS MDT Electronics Mezzanine PCB radiation hardness assurance testing. Initial TID and SEE testing have been successfully completed with satisfactory results, and a neutron test is scheduled. The design includes custom CMOS ICs and LDO voltage regulators, with no latch-up or transient events observed during testing. Various temperature sensors are being evaluated for their performance under radiation conditions. A comprehensive test program is in place to ensure all components meet the necessary reliability criteria for use in high-radiation environments.

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Progress Update on ATLAS MDT Electronics Mezzanine PCB Radiation Hardness Assurance Testing

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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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