{"title":"GaAs LED based NIEL spectrometer for the space radiation environment","authors":"A. Houdayer, P. Hinrichsen, A. L. Barry, A. Ng","doi":"10.1109/RADECS.1999.858560","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858560","url":null,"abstract":"A NIEL (Non-Ionizing-Energy-Loss) spectrometer experimental tray was fabricated with the intent that it would be flown on the MIR space station. Since the flight was subsequently cancelled, the tray was tested in a laboratory environment at the Universite de Montreal. While conventional TLDs are used to measure the dose due to ionization, GaAs and SiC LEDs are employed to measure NIEL, i.e. the non-ionizing component of the energy loss. The design criteria and testing of the GaAs LEDs as NIEL monitors are described.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127874142","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Amorphization of silicon via electronic processes induced by fullerenes irradiations","authors":"B. Canut, N. Bonardi, S. Ramos, S. Della-Negra","doi":"10.1109/RADECS.1999.858544","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858544","url":null,"abstract":"For the first time we show that single crystalline silicon is sensitive to collective electronic excitations. Irradiations with C/sub 60/ clusters accelerated in the 10 MeV range induce the formation of amorphous latent tracks in this material.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114705523","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Improving the radiation hardness properties of silicon detectors using oxygenated n-type and p-type silicon","authors":"G. Casse, P. Allport, M. Hanlon","doi":"10.1109/RADECS.1999.858558","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858558","url":null,"abstract":"The degradation of the electrical properties of silicon detectors exposed to 24 GeV/c protons were studied using pad diodes made from different silicon materials. Standard high-grade p-type and n-type substrates and oxygenated n-type substrates have been used. The diodes were studied in terms of reverse current (I/sub r/) and full depletion voltage (V/sub fd/) as a function of fluence. The oxygenated devices from different suppliers with a variety of starting materials and techniques, all show a consistent improvement of the degradation rate of V/sub fd/ and CCE compared to un-oxygenated substrate devices. Radiation damage of n-type detectors introduces stable defects acting as effective p-type doping and leads to the change of the conductivity type of the silicon bulk (type inversion) at a neutron equivalent fluence of a few 10/sup 13/ cm/sup -2/. The diode junction after inversion migrates from the original side to the back plane of the detector. The migration of the junction is avoided using silicon detectors with p-type substrate. Furthermore, the use of n-side readout allows a better charge collection in segmented devices operated in underdepleted mode. Large area (/spl ap/6.4/spl times/6.4 cm/sup 2/) 80 /spl mu/m pitch microstrip capacitively coupled detectors with polysilicon bias resistors made on p-type substrate with a n-i-p diode structure have been irradiated up to 3/spl middot/10/sup 14/ cm/sup -2/. We present results both before and after irradiation demonstrating the feasibility of using such devices at the Large Hadron Collider (LHC) at CERN.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"97 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127168869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jinhong Liu, peixiong zhao, L. Massengill, K. Galloway, J. Attia
{"title":"Circuit-level model for single-event burnout in N-channel power MOSFET's","authors":"Jinhong Liu, peixiong zhao, L. Massengill, K. Galloway, J. Attia","doi":"10.1109/RADECS.1999.858572","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858572","url":null,"abstract":"Single Event Burnout (SEB) of power MOSFET's is a catastrophic failure mechanism that is initiated by the passage of a heavy ion through the device. In this paper, an SEB circuit model of the power MOSFET has been developed. The calibrations of model parameters are illustrated. The dependence of SEB sensitivity on various parameters is presented and compared with experimental results. The parasitic resistance and capacitance of the device as well as the circuit parameters contribute to the length of SEB pulse. Increasing the switching frequency of the power MOSFET may be a possible way to prevent SEB in applications.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127435466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Observations on the reliability of COTS-device-based solid state data recorders operating in low-Earth orbit","authors":"Craig Underwood, M. Oldfield","doi":"10.1109/RADECS.1999.858613","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858613","url":null,"abstract":"This paper presents the results of Surrey Space Centre's experience in using different coding schemes and hardware configurations to protect data and software stored in COTS-device based memories on-board operational spacecraft in low Earth orbit.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116597266","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Charge-collection efficiency of GaAs field effect transistors fabricated with a low-temperature grown buffer layer: dependence on charge deposition profile","authors":"D. McMorrow, A. Knudson, J. Melinger, S. Buchner","doi":"10.1109/RADECS.1999.858547","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858547","url":null,"abstract":"The dependence of the charge-collection processes of LT GaAs field-effect transistors on the depth profile of the deposited carriers is examined using computer simulation and laser-induced charge-collection measurements. The charge-collection simulations reveal a surprising dependence of the charge-collection efficiency on the location of the deposited charge, such that the charge-collection efficiency is largest for charge deposition below the LT GaAs buffer layer. These results implicate the significant role of charge-enhancement phenomena in the charge-collection processes of LT GaAs FETs. Experimental measurements performed as a function of the optical penetration depth support the conclusions of the simulation study.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132827921","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Development of a 10 kGy(Si) rad hard controller for mobile robot using COTS","authors":"J. Alexandre, M. Marceau","doi":"10.1109/RADECS.1999.858614","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858614","url":null,"abstract":"The CEA ( Commissariat a l'Energie Atomique) has developed a controller based on COTS to equip the Andros mobile robot. An electronic architecture adapted under the constraint of movement has been developed with a realisation of a complete set of modules.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134038779","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Predicting the radiation induced loss in Ge doped optical fibres at different temperatures","authors":"R. H. West","doi":"10.1109/RADECS.1999.858629","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858629","url":null,"abstract":"A new method is described for predicting radiation induced losses in Ge doped optical fibres at various temperatures. Some physical justification is given for the recovery model employed, and model calculations are compared with experimental results.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"450 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116407600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Total dose hardness of a commercial SiGe BiCMOS technology","authors":"N. V. van Vonno, R. Lucas, D. Thornberry","doi":"10.1109/RADECS.1999.858617","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858617","url":null,"abstract":"Over the past decade SiGe HBT technology has progressed from the laboratory to practical commercial applications. When integrated into a CMOS process, this technology has potential applications in low-cost space systems. In this paper, we report results of total ionizing dose testing of a SiGe/CMOS process accessible through a commercial foundry.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121766284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
J. Barak, J. Barth, C. Seidleck, C. Marshall, P. Marshall, M. Carts, R. Reed
{"title":"Single event upsets in the dual-port-board SRAMs of the MPTB experiment","authors":"J. Barak, J. Barth, C. Seidleck, C. Marshall, P. Marshall, M. Carts, R. Reed","doi":"10.1109/RADECS.1999.858651","DOIUrl":"https://doi.org/10.1109/RADECS.1999.858651","url":null,"abstract":"The in-flight data of SEUs in the devices of panels B and C of the MPTB experiments are presented. Ground test data for M65656 are used to calculate the SEU rates in this device using the calculated flux of ions along the orbit. The models used are CREME96, simple expressions derived here, and the figure of merit model. A very good agreement is found between these calculations and the observed rates.","PeriodicalId":135784,"journal":{"name":"1999 Fifth European Conference on Radiation and Its Effects on Components and Systems. RADECS 99 (Cat. No.99TH8471)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121931942","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}