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Cosmic Ray Experiment

Cosmic Ray Experiment. Team Cosmic Jace Boudreaux Allen Bordelon. Mission Goal.

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Cosmic Ray Experiment

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  1. Cosmic Ray Experiment Team Cosmic Jace Boudreaux Allen Bordelon Cosmic Pre-PDR

  2. Mission Goal Cosmic Pre-PDR To build a balloon payload that will measure radiation intensity as a function of altitude up to 100,000 feet and to compare this with electrical conductivity results from team Jupiter. This may have a relationship to electrical conductivity of the atmosphere which could be related to the cause of lightning.

  3. Science Objectives Cosmic Pre-PDR Measure amount of ionizing radiation in the atmosphere as a function of altitude. Distinguish between high and low energy radiation particles as a function of altitude. Coordinate results with team Jupiter. Analyze measured data.

  4. Technical Objectives Cosmic Pre-PDR • Design and build an electrical system that can: • Withstand atmosphere conditions up to 100,000 feet • Count the number of radiation hits as a function of time • Measure the energy of a radiation particle as a function of time • Monitor temperature and pressure to make sure it is in range of sensors • Record collected data and retrieve using a program 

  5. Science Background Cosmic Pre-PDR Two Classifications of Cosmic Radiation • Primary • Any high energy particles originating from outside of earth. • Secondary • High energy particles that result from collisions of primary cosmic rays and molecules in the atmosphere. Cosmic Radiation Cascade http://hyperphysics.phy-astr.gsu.edu/HBASE/Astro/cosmic.html

  6. Science Background Cosmic Pre-PDR Cosmic Radiation as a Function of Altitude Expected Results • As altitude increases, cosmic radiation increases until a peak is reached • As altitude increases, energy of the comic rays will increase http://laspace.lsu.edu/aces/teams/2002-2003/FLUX/FLUX.php

  7. Science Requirements Cosmic Pre-PDR • To measure rate of ionizing radiation in counts/minute as a function of altitude • To measure the energy of radiation particles as a function of altitude.

  8. Technical Background Cosmic Pre-PDR • Payload will be attached to a balloon rising at 1000 feet/min • Altitude will be measured by a separate payload • Radiation will be measured using a radiation detector. • Three types of radiation detectors are • Geiger-Muller Counter • Semi-conductor radiation detector • Scintillation counter

  9. Technical Background Cosmic Pre-PDR https://kemifysik.wikispaces.com/file/view/Geigert%C3%A6ller.png/34627667 Geiger-Muller Counter • When radiation hits, it produces electrons that create a current pulse

  10. Technical Background Cosmic Pre-PDR http://nsspi.tamu.edu/NSEP/basic_rad_detection/semiconductor/image1.jpg Semi-conductor Radiation Detector • Radiation strikes semiconductor, producing free electrons and holes proportional to radiation energy • Free electrons and holes travel to electrodes producing a current pulse

  11. Technical Background Cosmic Pre-PDR http://www.physics.isu.edu/radinf/images/dect2.gif Scintillation counter • Radiation enters and is absorbed by scintillator crystal and produces light proportional to initial energy • Photomultiplier tube amplifies this light and produces a current pulse

  12. Technical Requirements Cosmic Pre-PDR • Take sample rate in counts/minute every 1000 feet. • Store a time stamp and count number for each radiation count sample. This will require 4 bytes per measurement. • Condition a voltage value to the range of the ADC (0 to 3 volts) of the BalloonSat for each energy proportional voltage pulse. • Store a voltage value and a time stamp on the BalloonSat for each energy proportional voltage pulse. It will use 4 bytes per measurement.

  13. Technical Requirements Cosmic Pre-PDR • Convert a current pulse into a voltage pulse. • Payload needs to withstand temperatures between -70 °C and 50°C • Temperature and pressure need to be recorded to ensure sensors are in a workable range. • Balloon payload should be less than 500 grams. • Payload cannot exceed 3 oz/inch2 on any side

  14. Project Timeline Cosmic Pre-PDR • PDR – Feb 9th, 2010 • Design - System, Electronic, Flight Software, Mechanical • Pre-CDR – Mar 9th, 2010 • Prototyping - Electronic, Flight Software, Mechanical • Data Processing and Analysis Plan • CDR – Mar 30th, 2010 • Finalize Pre-CDR • FRR – May 4th, 2010 • Flight Payload Component Fabrication and Integration • System Testing and Calibration • Payload Launch – May 25th, 2010 • Flight Operations • Final Presentation – May 27th, 2010 • Data Processing and Analysis

  15. Questions? Cosmic Pre-PDR

  16. Cosmic Pre-PDR Project Gantt Chart

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