Technology & Cost WP Working Group GOALS. With the Current Generation of IACTs, Ground-based gamma-ray astronomy has entered a new era! Technology detector R&D: Identify technology and collaborate in the detector R&D required to design a future ground based gamma-ray observatory Simulations:
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With the Current Generation of IACTs, Ground-based gamma-ray astronomy has entered a new era!
Who we are:Jim Buckley, Karen Byrum, Brenda Dingus, Gary Drake, Steve Fegan, John Finley, Liz Hays, Jamie Holder, Deirdre Horan, Alexander Konopelko, Frank Krennrich, Stephen Lebohec, Andy Smith, Vladimir Vassiliev, Scott Wakely
PLEASE JOIN THE FUN
Gamma ray ( or Cosmic ray) interacts in the upper atmosphere (big calorimeter) and initiates a shower of charged particles (mainly e+/-)
The shower develops along the direction of the primary gamma.
High energy electrons with v> c/n emit Cherenkov light. Cherenkov Light Flashes (~ a few ns) are briefly brighter than fluctuations in night sky light.
IACTs (Imaging Atmospheric Cherenkov Telescopes) record this Cherenkov flash.
EAS detectors look for the particles directly. About 25% of primary gamma ray energy makes it to the ground in the form of particles.
Background is cosmic ray showers -isotropic
Goals for The Next Ground Based Generation:
Altitude, bigger dishes, higher QE, high speed trigger, ASICs, FPGAs
Higher QE, triggering, better bkgd rejection, smaller pixels
Hybrids, new optical designs
Bkgd rejection, triggering