TA10-314: Effect Characterization of Proton Radiation on LEAP OBT (ECPRL)

https://radnext.web.cern.ch/ https://www.linkedin.com/company/radnext EDMS NO. 3328307 VALIDITY Released REV. 1.0 DOI: 10.5281/zenodo.17287922 RADNEXT Transnational Access Summary Report Project title Effect Characterization of Proton Radiation on LEAP OBT (ECPRL) Project TA identifier TA10-314 General application Datacom, harsh environments, space, aviation, physics research, medical Type of test TNID Group leader, Institute Matthias Hendel, Amphenol AOP Co-authors, Institutes Mathias-Emanuel Hartmann, Dirk Bettermann, Alexandre Lassalle. All Amphenol AOP Date(s) of the experiment 2025-03-24 to 2025-03-26 Facility Paul Scherrer Institut Amount of access granted (unit of access: 1h) 11 Objectives of the experiments The objective of this experiment was to characterize the effects of proton radiation on a state-of-the-art optical transceiver for harsh environments. The tested transceiver was Amphenol Active Optical Products’ QEPT Module. This deviation from the initially proposed LEAP OBT was initiated after talking to the RADNEXT TA Team, when SEE tests performed by CNES/TRAD in Q4 2024 indicated, that the LEAP OBT was susceptible to single event effects. The initial testing was performed between the 24th and the 26th of March 2025 at the Paul Scherrer Institute in Switzerland. The full analysis of the test results is still ongoing and will be completed after the irradiated samples are released from quarantine. This is currently expected to happen towards the backend of 2025. Non the less, the preliminary results presented in this report already provide some valuable insight into the robustness of the QEPT with regards to displacement damage and represent a significant step towards having a fully radiation characterized, European manufactured, COTS optical transceiver. EDMS 3328307 v.1 status In Work access Restricted PDF from TA10-314-Zenodo.doc modified 2025-10-07 15:54 https://radnext.web.cern.ch/ https://www.linkedin.com/company/radnext EDMS NO. 3328307 VALIDITY Released REV. 1.0 Figure 1: Amphenol AOP QEPT Module Experiment test report All Results are considered preliminary. A total of 14 of Amphenol AOPs QEPT modules where exposed, in three batches, to varying fluences of a 50-MeV Proton beam. The samples were grouped in batches of 6 units, which were placed in the beam at the same time. Batch composition Table Day 1 Day 2 note Serial Numbers Part Number Batch Position Batch Position QA2509-00008 TR252041PMTA1C00 1 1 3 1 QA2509-00013 TR252041PMTA1C00 1 2 x x QA2509-00009 TR252041PMTA1C00 1 3 x x QA2509-00005 TR252041PMTA1C00 1 4 x x QA2509-00007 TR252041PMTA1C00 1 5 3 5 QA2452-00008 TR252041PMTA1C0S 1 6 3 6 “space” configuration QA2509-00010 TR252041PMTA1C00 2 1 x x QB2504-00001 TR252041PMTA1C0S 2 2 3 2 “space” configuration QA2509-00006 TR252041PMTA1C00 2 3 x x QA2509-00004 TR252041PMTA1C00 2 4 x x QA2509-00001 TR252041PMTA1C00 2 5 x x QA2509-00002 TR252041PMTA1C00 2 6 x x QA2509-00014 TR252041PMTA1C00 Control QA2509-00003 TR252041PMTA1C00 x x 3 3 QA2509-00012 TR252041PMTA1C00 x x 3 4 https://radnext.web.cern.ch/ https://www.linkedin.com/company/radnext EDMS NO. 3328307 VALIDITY Released REV. 1.0 The samples were biased according to the following schematic: Figure 2: Bias Configuration During Irradiation Due to the sample distribution on the test board (see below) the fluence distribution was not uniform within one Batch https://radnext.web.cern.ch/ https://www.linkedin.com/company/radnext EDMS NO. 3328307 VALIDITY Released REV. 1.0 Figure 3: QEPT DD Testfixture Top View To account for the heterogenous distribution the calibration data was interpolated into an adjustment factor, reflecting both the beam calibration data as well as the modules position on the board. Both this adjustment factor, as well as the fluences (per tests and accumulated) may be found in the following table. https://radnext.web.cern.ch/ https://www.linkedin.com/company/radnext EDMS NO. 3328307 VALIDITY Released REV. 1.0 Fluence per Test/Module Batch 1 T1 T2 T3 T4 Position adjustment Factor Test Accumulated Test Accumulated Test Accumulated Test Accumulated nominal Fluence 5.52E+09 5.52E+09 5.55E+09 1.11E+10 4.40E+10 5.51E+10 5.50E+10 1.10E+11 adjusted Fluences: QA2509-00008 5.12E+09 5.12E+09 5.15E+09 1.03E+10 4.09E+10 5.11E+10 5.11E+10 1.02E+11 1 0.928302689 QA2509-00013 5.33E+09 5.33E+09 5.36E+09 1.07E+10 4.25E+10 5.32E+10 5.32E+10 1.06E+11 2 0.966366219 QA2509-00009 4.56E+09 4.56E+09 4.58E+09 9.14E+09 3.63E+10 4.55E+10 4.54E+10 9.09E+10 3 0.825904515 QA2509-00005 3.73E+09 3.73E+09 3.75E+09 7.47E+09 2.97E+10 3.72E+10 3.71E+10 7.43E+10 4 0.67531594 QA2509-00007 3.58E+09 3.58E+09 3.60E+09 7.19E+09 2.86E+10 3.58E+10 3.57E+10 7.15E+10 5 0.649545396 QA2452-00008 4.13E+09 4.13E+09 4.15E+09 8.28E+09 3.29E+10 4.12E+10 4.12E+10 8.23E+10 6 0.748047762 Fluence per Test Batch 2 T1 T2 T3 T4 Position Test Accumulated Test Accumulated Test Accumulated Test Accumulated nominal Fluence 8.92E+10 8.92E+10 9.48E+10 1.84E+11 8.79E+10 2.72E+11 1.09E+11 3.81E+11 adjusted Fluences: QA2509-00010 8.28E+10 8.28E+10 8.80E+10 1.71E+11 8.16E+10 2.52E+11 1.01E+11 3.53E+11 1 0.928302689 QB2504-00001 8.62E+10 8.62E+10 9.17E+10 1.78E+11 8.49E+10 2.63E+11 1.05E+11 3.68E+11 2 0.966366219 QA2509-00006 7.37E+10 7.37E+10 7.83E+10 1.52E+11 7.26E+10 2.25E+11 8.97E+10 3.14E+11 3 0.825904515 QA2509-00004 6.02E+10 6.02E+10 6.40E+10 1.24E+11 5.93E+10 1.84E+11 7.33E+10 2.57E+11 4 0.67531594 QA2509-00001 5.79E+10 5.79E+10 6.16E+10 1.20E+11 5.71E+10 1.77E+11 7.05E+10 2.47E+11 5 0.649545396 QA2509-00002 6.67E+10 6.67E+10 7.09E+10 1.38E+11 6.57E+10 2.03E+11 8.12E+10 2.85E+11 6 0.748047762 https://radnext.web.cern.ch/ https://www.linkedin.com/company/radnext EDMS NO. 3328307 VALIDITY Released REV. 1.0 Fluence per Test Batch 3 T1 T2 T3 Position Test Accumulated Test Accumulated Test Accumulated nominal Fluence 1.90E+11 1.90E+11 1.90E+11 3.80E+11 1.30E+11 5.10E+11 adjusted Fluences: QA2509-00008 1.76E+11 1.76E+11 1.76E+11 3.53E+11 1.21E+11 4.73E+11 1 0.928302689 QB2504-00001 1.84E+11 1.84E+11 1.84E+11 3.67E+11 1.26E+11 4.93E+11 2 0.966366219 QA2509-00003 1.57E+11 1.57E+11 1.57E+11 3.14E+11 1.07E+11 4.21E+11 3 0.825904515 QA2509-00012 1.28E+11 1.28E+11 1.28E+11 2.57E+11 8.78E+10 3.44E+11 4 0.67531594 QA2509-00007 1.23E+11 1.23E+11 1.23E+11 2.47E+11 8.44E+10 3.31E+11 5 0.649545396 QA2452-00008 1.42E+11 1.42E+11 1.42E+11 2.84E+11 9.72E+10 3.82E+11 6 0.748047762 Module not functional: red, module impacted but functional: yellow. Module functional: green. "space" module variant in blue text Generally, as indicated by the colour coding in the preceding table, the two transceivers QA2452-00008 and QB2504-00001 survived irradiation in excess of 3.82E11 particles per square cm with minor, non functional effects. Both of these parts are prototypes of the “Space” version of the QEPT. Non of the other parts survived more than 1.38E11 with the first parts failing after 3.72E10 particles per square cm. Since the objective of this experiment was to characterize the behaviour of the QEPT with regards to displacement damage, the project may already be considered a success based on these preliminary findings alone. Release of the completed report depends on the completion of two additional tasks. Firstly, a number of parameters were measured after every irradiation step and are currently being analysed regarding their fluence dependent changes. Secondly, a final set of measurements is to be performed on the modules, once they clear quarantine at PSI. The next chance for this is currently anticipated in December 2025. https://radnext.web.cern.ch/ https://www.linkedin.com/company/radnext EDMS NO. 3328307 VALIDITY Released REV. 1.0 Outcome of the experiments Please indicate what the experiment is likely to lead to by putting an ‘X’ next to one or more of the possible outcomes below. Journal publication Data for Thesis Follow-up experiment at same facility Follow-up experiment at another facility x Other x As a RADNEXT user, we encourage you to submit the scientific results of your experiments to journals as well as to the NSREC and RADECS data workshops. Please remember to include the RADNEXT acknowledgment into your publications! RADNEXT acknowledgment: This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 101008126.