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SPP group involvement in rocket and balloon experiments

SPP group involvement in rocket and balloon experiments. - Cascades-2 sounding rocket - PoGO Lite astrophysical balloon Hardware solutions - SMILE magnetometer - SMILE 2.0 - “Silverbox” and photometers Timeline - Cascades-2 campaign - PoGO Lite launch (Applications in progress - SPIDER

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SPP group involvement in rocket and balloon experiments

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  1. SPP group involvement in rocket and balloon experiments - Cascades-2 sounding rocket - PoGO Lite astrophysical balloon Hardware solutions - SMILE magnetometer - SMILE 2.0 - “Silverbox” and photometers Timeline - Cascades-2 campaign - PoGO Lite launch (Applications in progress - SPIDER - SEPAM)

  2. Cascades2 ~reflight of ~The Changing Aurora: in Situ and Camera Analysis of Dynamic Electron precipitation Structures PI: – Kristina A Lynch, Dartmouth Kevin Rhoads Lead CoIs: – Paul Kintner, Cornell Steve Powell – Marc Lessard, UNH Paul Riley – Hans Stenbaek-Nielsen, UAF/GI CoIs: – James LaBelle, Dartmouth – Mark Psiaki, Cornell – Tom Hallinan, UAF/GI Collaborators: – John Bonnell and Chris Chaston, SSL/UCB – Goran Marklund and Nickolay Ivchenko, KTH, Sweden – Charles Seyler, Cornell – Craig Heinselman, SRI

  3. March 2005 PFRR 3rd stage failure Another chance Same team, same goals KTH: 1. Magnetometer 2. Ground Camera

  4. Bo PFRR AMISR Kaktovic E and B along Bo e- across Bo Fast e- down Bo Image down Bo Ground cameras Radar

  5. Science Questions:space vs time (1) Does dynamic aurora move with respect to the background ionosphere? How much? Does it matter? (2) What is the spatial (as opposed to temporal) variation of auroral parameters like B and E? What does this mean for theories of energy transfer? (3) Alfven waves carry disturbances and changes down to and through the auroral zone, giving us structured and dancing aurora. They are pretty: do they matter? Are these structures significant for magnetosphere/ionosphere coupling? Do direct observations of these motions validate theories and models?

  6. PoGOLite is a balloon-borne experiment which stands to open a new observational window on the Universe through measurements of the polarisation of gamma-rays in the energy range 25 - 80 keV from compact astrophysical objects, such as pulsars, and accreting black holes. The polarisation is reconstructed using the modulation of Compton scattering angles in the segmented sensitive volume of the instrument composed of plastic scintillators. Lead PI in Sweden: prof. Mark Pearce (Astroparticle Physics, KTH)

  7. PoGOLite detectors

  8. PoGOLite first flight Location: Esrange, Kiruna Time: mid-August 2010 Duration: 12-24 hours Objective: test payload, characterise background Targets: Crab (RA: 05h 34m, DEC: +22 00) Cyg X-1 (RA: 19h 58m DEC: +35 12)

  9. PoGOLite Auroral Background Millan, 2002. MAXIS balloon X rays.

  10. PoGOLite Auroral Background Petrinec, 2000. Polar PIXIE observations of 2-12 keV X rays and AKR.

  11. PoGOLite auroral diagnostics - Astrophysicists want to know when there is aurora, and what are its parameters (energy flux, characteristic energies). - We want to know whether auroral X-rays are polarised - The diagnostic package will consist of photometers (a la ASK) and a magnetometer (a la Cascades-2). - From photometer ratios the energies can be esimated. Challenges: Strong background → only red, IR emissions filter width? cooling? background channel or filter tilting?

  12. SMILE – digital fluxgate magnetometer Sensor: dimension 20x20x21 mm weight 21g cable weight 4 g/m Electronics+box: dimension 70x70x25 mm weight <200 g power <500 mW Prototype electronics PCB: 120x88 mm, 80 g

  13. SMILE diagram FPGA Processor

  14. SMILE 2.0 diagram GPS 1PPS, (UTC) FPGA NASA TM LVDS serial Memory Processor PC RS-232

  15. Sensor Electronics box

  16. Photometer counter for PoGOLite GPS Photometer 1PPS, (UTC) FPGA Memory Processor PC RS-232

  17. ”Black Box” for ASK timing

  18. ”Silver Box” for ASK timing

  19. ”Silver Box” diagram Camera GPS Camera Photometer Camera 1PPS, (UTC) FPGA Memory Processor PC RS-232

  20. ”Silver Box” advantages - better and faster synchronisation to GPS time - eliminates possible hangup of NI driver software - allows synchronisation of instruments at different locations - reduces the number of cables! - thermal control loop and light-sensitive switch can be implemented independently of the PC - run photometers as fast as you want! - store data in memory, and read out later - timetag data unambiguously

  21. ”Silver Box” drawbacks It takes a while to make it! but … We will make several! - ASK system - PoGOLite system & new EMCCD - SIF photometers? - ???

  22. The plan October 20 – get ASK up and running for the season October 29 – heating campaign at Tromsø, with new camera, PoGOLite photometers February – Cascades-2 campaign in Alaska, with new camera, PoGOLite photometers, (other cameras)? HD and GM will be at Toolik lake. Heating at HAARP, a campaign at AMISR?

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