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PERDaix Balloon-borne Spectrometer: Dark Matter Detection in Astrophysics

PERDaix, launched in 2010 from Kiruna, Sweden, is a proton-electron radiation detector used to measure cosmic rays up to 5 GeV. This successful balloon flight instrument weighs around 40kg with a power consumption of 90W. It includes the PEBS prototype, PERDaix, and is essential for dark matter research in astrophysics. Key features include a charge-sign-dependent solar modulation for accurate measurements. The overall height of the instrument is 2.7m with an acceptance of 1200 cm²sr for electrons, and it includes crucial components like the magnet and calorimeter.

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PERDaix Balloon-borne Spectrometer: Dark Matter Detection in Astrophysics

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  1. PEBS Prototype PERDaix was launched in October 2010from Kiruna, Sweden

  2. Dark Matter ? Astrophysics ? Solar Modulation ? Galprop Adriani+’08

  3. Charge-Signdependent Solar Modulation ? Proton Anti-Proton

  4. Acceptance ~40 cm²sr • weight ~40kg • power ~90W PEBS Prototype: PERDaix • Proton Electron RadiationDetector Aix-La-Chapelle • Balloon-borne spectrometer • Measurement of cosmic raysup to 5 GeV • First successfull balloon flightin October 2010 200mm 420mm 800mm

  5. Acceptance ~40 cm²sr • weight ~40kg • power ~90W PEBS Prototype: PERDaix • Proton Electron RadiationDetector Aix-La-Chapelle • Balloon-borne spectrometer • Measurement of cosmic raysup to 5 GeV • First successfull balloon flightin October 2010

  6. B/C - data Dark Matter ? Astrophysics ? B.Beischer et al., New Journal of Physics 11 (2009) 105021(15pp). Galprop

  7. (5 years) PEBS-02, 1 GeV – 2 TeV Pulsar 400 GeVWIMP Galprop AMS-02, 1 GeV – 1 TeV PAMELA, 1 GeV – 0.5 TeV

  8. PEBS-02, e- 1 GeV – 2 TeV Fermi Electrons + Positrons What’s here? I.Moskalenko, COSPAR 2010, Bremen HESS AMS-02, e- 1 GeV – 1 TeV PAMELA, e- 1 GeV – 0.5 TeV

  9. PEBS Experiment The overall height, including the lower crush pads, is 2.7 m and the overall width is 3.3 m. The total weight of the instrument is 2000 kg.

  10. Outer SciFi Tracker 1 PEBS-1 The magnetic spectrometer has a geometrical acceptance of 1200 cm2 sr for electrons. The most important contributions to the overall weight are the magnet (890 kg) and the calorimeter (650 kg), The power consumption is dominated by the 250 W needed for the tracker which has roughly 60,000 individual readout channels. The lower detector combination of TRD and ECAL, which can be used for the measurement of the combined electron- positron spectrum at high energies, has an acceptance of 6000 cm2 sr. TRD 1 B=0.34 T Inner SciFi Tracker Permanent Magnet ToF TRD 2 Outer SciFi Tracker 2 ECAL

  11. e p PEBS TRD • 2x8 Layers each existing of: • 20 mm fibre fleece • Ø 6 mm straw tubes filledwith Xe/CO2 80%/20% • HV 1450 V TRD 1 TRD 2 production of 128 TRD modules completed

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