Author/Authors :
Konstantinov، نويسنده , , V.F and Krasnokutsky، نويسنده , , R.N and Shuvalov، نويسنده , , R.S and Solodkov، نويسنده , , A.A and Starchenko، نويسنده , , E.A and Sushkov، نويسنده , , V.V and Zaitsev، نويسنده , , A.M and Dzhelyadin، نويسنده , , R.I and Kopikov، نويسنده , , S.V and Solovyanov، نويسنده , , O.V، نويسنده ,
Abstract :
High-pressure gas modules with cylindrical ionization chambers for a Very Forward Calorimeter (VFC) were constructed and tested in the U-70 electron beam of IHEP (Protvino). The read-out amplifiers were used in a remote mode (3 m long cables were used to connect the detector to the amplifier). The module performance was tested in the shower energy range 10–30 GeV employing different gas mixtures (Ar + CH4, Ar + CF4 and pure CF4) at the pressure of 20–40 atm. The energy resolution σ(E)E = 18% is reached at the angle of 5.7° for 30 GeV incident electrons. The design was found to be adequate for a future use at LHC.
