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Devon Madden, Zachary Paul , Marcus Hohlmann, Ondrej Doule Florida Institute of Technology

Operation, Assembly, and Quality Control Testing of 10cm × 10cm GEM Detector to be used for Real Time Radiation Monitoring of High Altitude Aircraft and Spacecraft Flights. Devon Madden, Zachary Paul , Marcus Hohlmann, Ondrej Doule Florida Institute of Technology

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Devon Madden, Zachary Paul , Marcus Hohlmann, Ondrej Doule Florida Institute of Technology

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  1. Operation, Assembly, and Quality Control Testing of 10cm × 10cm GEM Detector to be used for Real Time Radiation Monitoring of High Altitude Aircraft and Spacecraft Flights Devon Madden, Zachary Paul, Marcus Hohlmann, Ondrej Doule Florida Institute of Technology Florida Academy of Sciences March 8, 2019

  2. Space Tourism and Transportation Blue Origin New Shepard [5]. SpaceX Crew Dragon 2 [9]. Virgin Galactic VSS Unity [18].

  3. Cosmic Radiation Diagram of Cosmic Ray Air Shower [14]. Diagram for layers of Earth’s atmosphere [16].

  4. Application of GEM Detector • High altitude aircraft (15 km) • Suborbital vehicle (80 km) • Directional radiation monitoring • Response to incoming radiation • Reduce ionizing radiation exposure F104-B Starfighter [8]. Blue Origin New Shepard [5].

  5. GEM Detector Fundamentals • Originally CERN based project for particle physics • Detection works through the use of electron avalanching Cross sectional view of foil arrangement inside detector for a triple GEM foil detector [7]. Cross sectional view of holes inside GEM foils [7].

  6. GEM Detector Fundamentals • Originally CERN based project for particle physics • Detection works through the use of electron avalanching Ionizing Particle Cross sectional view of foil arrangement inside detector for a triple GEM foil detector [7]. Cross sectional view of holes inside GEM foils [7].

  7. Construction Flowchart High Voltage board and Electronics Foil Stacking Sealing Detector

  8. Quality Control (QC) Testing • QC 2:GEM Foil Test • QC 3: Gas/ Pressure Test • QC 4: High Voltage (HV) Test • QC 5:(To be conducted) • Effective Gain Measurement Test • Gain Uniformity Test

  9. QC2: GEM Foil Test QC2 results for GEM foil 1 of the 10 x 10 detector. Multi Mega-Ohmmeter [3].

  10. QC3: Gas/ Pressure Test Pressure, temperature, and atmospheric pressure over time for 10 x 10 GEM detector.

  11. HV Divider High Voltage 2.2 nF 100 kΩ 2.2 nF 100 kΩ 100 kΩ 100 kΩ Drift 100 kΩ GEM1T GEM1B 100 kΩ GEM2T GEM2B GEM3B GEM3T 5.5 MΩ HV Divider. 100 kΩ 0.27 nF 51 kΩ 1MΩ 1MΩ 1MΩ 1MΩ Pre Amp 500kΩ 550kΩ 450kΩ Circuit diagram of HV board.

  12. QC4: HV Test 10 x 10 detector set up for QC4. IV curve and rate vs. current curve for 10 x 10 GEM detector.

  13. Future Works: QC5 Testing • Distinguish cosmic events • Conformal coating • Effective gain test • Response uniformity Oscilloscope trace from bottom of GEM foil 3 and readout strips.

  14. Thank You Questions? • See more at our website: https://research.fit.edu/hep/hohlmann-research-group/

  15. References

  16. References (Continued)

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