Astronomy and Astrophysics – Astrophysics
Scientific paper
2008-12-18
Nucl.Instrum.Meth.A597:55-60,2008
Astronomy and Astrophysics
Astrophysics
presented at the 5th Fluorescence Workshop, El Escorial - Madrid, Spain, 16 - 20 September 2007
Scientific paper
10.1016/j.nima.2008.08.049
One of the goals of the AIRFLY (AIR FLuorescence Yield) experiment is to measure the absolute fluorescence yield induced by electrons in air to better than 10% precision. We introduce a new technique for measurement of the absolute fluorescence yield of the 337 nm line that has the advantage of reducing the systematic uncertainty due to the detector calibration. The principle is to compare the measured fluorescence yield to a well known process - the Cerenkov emission. Preliminary measurements taken in the BFT (Beam Test Facility) in Frascati, Italy with 350 MeV electrons are presented. Beam tests in the Argonne Wakefield Accelerator at the Argonne National Laboratory, USA with 14 MeV electrons have also shown that this technique can be applied at lower energies.
AIRFLY Collaboration
Ave Maximo
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