In-Situ Total Ionizing Dose Tests of SSPA Components R. Uzel, M. B. - - PowerPoint PPT Presentation

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In-Situ Total Ionizing Dose Tests of SSPA Components R. Uzel, M. B. - - PowerPoint PPT Presentation

Dec 07, 2022 371 likes •581 views

In-Situ Total Ionizing Dose Tests of SSPA Components R. Uzel, M. B. Demirkz, A. zyldrm, O. Kalkan, H.I. Atasoy 1 Outline q Space Radia+on Environment q Single Event Effects tes+ng Project q Total Ionizing Dose Tes+ng Project q Test

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In-Situ Total Ionizing Dose Tests of SSPA Components

  • R. Uzel, M. B. Demirköz, A. Özyıldırım, O. Kalkan, H.I. Atasoy

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q Space Radia+on Environment q Single Event Effects tes+ng Project q Total Ionizing Dose Tes+ng Project q Test Techniques and Setup q Test Results q Conclusion

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Outline

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Space RadiaIon Environment

LEO (550 – 1000 km) ~ 1-10 krad (Si) / year MEO (1000 – 3000 km) ~ 100-1000 krad (Si) / year GEO (36,000 km) ~ 10-100 krad (Si) / year

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Space RadiaIon Environment

Nikkei Science, Inc. of Japan, by K. Endo

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Space RadiaIon Environment

Based on the mission specifica+ons, an analysis reveals that the SSPA is expected to absorb ~100 kRad(Si) of total dose during its orbital life+me.

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TAEK SANAEM Proton Accelerator Facility

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Beam Energy 30MeV Beam current 10μA to highest 1.2mA Beam size at the R&D room 1cm in diameter.

Proton IrradiaIon Test Facility in Turkey

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Defocusing Beam Line Layout

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1st quadrupole magnet 2nd quadrupole magnet 3rd quadrupole magnet Magne+c field (kG) 3.3

  • 1.2

6.5 Length(m) 0.3 0.3 0.3 Aperture(cm) 11.0 11.0 16.0

Proton IrradiaIon Test Facility in Turkey

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  • The project

– started in August 2015. – Funded by Ministry of Development in Turkey. – Has approximately 2 million Euro budget.

  • The facility will serve space community in

2018.

Proton IrradiaIon Test Facility in Turkey

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  • The project

– started in December 2014. – collabora+on between Aselsan and METU. – funded by Ministry of Science, Industry and Technology in Turkey. – aims to qualify in-house developed Solid State Power Amplifers.

In-Situ Total Ionizing Dose TesIng Project

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TAEK SANAEM Gamma IrradiaIon Facility

Total Ionizing Dose Test Facility in Turkey

Source Co60 Ac+vity 300 kCi

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Test Techniques and Setup

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Test Techniques and Setup

q Test Samples; Ø Solid State Power Amplifier and its components; High Power Amplifier Afenuator Phase Shiger Amplifier q Measurement Units q Power Supplies q Dosimetry (Alanine) IniIal Measurement Dose IrradiaIon up to 300 krad(Si) Annealing RT & High Temp Final Measurement

ESCC22900 – Total Dose Steady-State Irradia+on Test Method

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Test Techniques and Setup

Layout of SSPA Modules and its components placed in Al-Pb Box during irradia+on Layout of RF Switch in Al-Pb box on the access path

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Test Techniques and Setup

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Output power characterisIcs of GaAs High Power Amplifier MMICs

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Output power characterisIcs of GaAs Power Amplifier MMICs

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AZenuaIon characterisIc of Analog AZenuator

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AZenuaIon characterisIc of Analog AZenuator

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Conclusion

q The test results exhibit excellent hardness characteris+cs under irradia+on. q Test results suggest that components of SSPA will operate successfully against gamma ray irradia+on. q Although, GaAs MMICs that are components of in-house developed SSPA modules are immune to total ionizing dose effects according to test results, radia+on effect studies and tests of SSPA module itself will be inves+gated to insure its performance in the space environment.