Speaker
Description
Usually, magnetic field is used for identification of different accelerated particles. This method is sensitive to the relation Z/M, where Z and M are the charge and mass of the particles respectively. Here, we propose to apply measurements of ionization loss that depends mainly on Z for identification of particles. Recently, we observed carbon ions +6C and its fragments with Z=1,2,3,4,5 of energy 25 GeV/nucleon by Si surface-barrier detector of size 10*10 mm and thickness of the depleted layer 300 mkm at accelerator U-70 [1,2]. The measured spectrum of ionization loss, shown in figs. 8 in both papers [1,2], contains 6 corresponding Landau spectral peaks at different energies depending on the charge of particles. The measurements of ionization loss together with application of magnetic field can be used for identification of particles in a beam that contains different particles.
References
[1] A.G. Afonin, E.V. Barnov, G.I. Britvich, A.A. Durum, M.Yu. Kostina, V.A. Maisheev, V.I. Pitalev, S.F. Reshetnikov, Yu.A. Chesnokov, P.N. Chirkov, A.A. Yanovich, R.M. Nazhmudinov, A.S. Kubankin, A.V. Shchagin. Extraction of the carbon ion beam from the U-70 accelerator into beamline 4a using a bent single crystal. Instruments and Experimental Techniques 59(4) (2016) 497-500.
[2] A.G. Afonin, E.V. Barnov, G.I. Britvich, Yu.A. Chesnokov, P.N. Chirkov, A.A. Durum, M.Yu. Kostin, V.A. Maisheev, V.I. Pitalev, S.F. Reshetnikov, A.A. Yanovich, R.M. Nazhmudinov, A.S. Kubankin and A.V. Shchagin. The measurement results of carbon ion beam structure extracted by bent crystal from U-70 accelerator. Journal of Physics: Conference Series 732 (2016) 012027.