The E300 experiment: Xe+Sn @ 50 AMeV

Thermal photons: A new probe of hot and dense nuclear matter

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Goals of E300 experiment:
  • Study of photons of energy between 25 MeV and 50 MeV emitted 
in bremsstrahlung secondary pn collisions from a thermalizing nuclear source production in heavy-ion reactions at intermediate energies in connection with simultaneous and fast break-up of an excited nuclear system into several 
intermediate mass fragments processes.
  • Measurement of exclusive hard photon spectra in coincidence with LCP (light charged particles) and IMF (intermediate mass fragments) for the system Xe+Sn at 50 AMeV.


Presented results:

Experimental set-up:
  • GANIL (GANIL accelerator system). Delivering Xe beams of E = 50 AMeV and I = 5 nAe.
  • TAPS ("Two-Arm Photon Spectrometer"). 364 BaF2-modules electromagnetic segmented calorimeter for photon detection covering 20% of 4.
  • DB (Washington University "Dwarf Ball"). 64 CsI(Tl)-plastic phoswich multidetector for LCP and IMF detection in 32° < <168°.
  • FW (KVI "Forward Wall"). 92 NE115-NE102A phoswich multidetector for  LCP and IMF detection in 2.5°< <25°.
  • SSD (Silicon Strip Detector). 64 circular and 128 radial silicon strip detectors for IMF detection in 2.0°< <10.3°.


List of participants:

Experimental information:

Preliminary results:
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XeSn : [Goals]  [Exp. set-up]  [Participants]  [Reaction prop.] [Run information]  [Foster database]  [Run sets]  [Triggers]  [Preliminary results] 
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