An electromagnetic scintillation calorimeter using liquid krypton or x
enon as the working medium has been built. The calorimeter consists of
45 tapered light-collecting cells with dimensions of (2.1 x 2.1) x 40
x (4.15 x 4.15) cm made from aluminum-coated mylar film 50 mum thick.
The light from each cell is detected by photomultipliers. The calorim
eter filled with liquid krypton was exposed to a beam of secondary par
ticles with a momentum of 400 MeV/c from the ITEP accelerator. The res
ults of the first test are given.