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TY - CONF AU - Rascvetalov, Ja.N. AU - Krupny, G.I. AU - Maslov, M.A. AU - Peleshko, V.N. ED - Kuzin, Maksim V. ED - Schaa, Volker RW TI - Installation for Irradiation of Thin Foils by Halo Proton Beam on IHEP Accelerator J2 - Proc. of RUPAC2018, Protvino, Russia, 01-05 October 2018 C1 - Protvino, Russia T2 - Russian Particle Accelerator Conference T3 - 26 LA - english AB - The halo of proton beam arises due to proton elastic and coulomb scattering on the internal target. On 70 GeV IHEP accelerator (U-70) halo contains up to several per-cent of proton beam. It was shown by Monte Carlo method that on thin target (0.05-1 g/cm² foils) each halo proton crosses the foil specimen up to 10³ - 10⁵ times before it will be lost during U-70 cycle. The radiation damage level in foil specimens at 1020 crossings was estimated at about 0,17 dpa (displacement per atom). Accumulation of hydrogen and helium atoms during exposure was calculated for iron, nickel and chromium specimens. Some factors limiting the rate of accumulation of radiation damage and ways for its solutions are discussed. Simple installation with various material foils as targets is described together with the first proton expo-sure results of copper and aluminum foils. It is important, that foils irradiation by beam halo may be provided independently out of the main U-70 physical program. As concluded, radiation damage level compared with results got during one year research nuclear reactors can be accumulated during one U-70 run (one month). PB - JACoW Publishing CP - Geneva, Switzerland SP - 249 EP - 252 KW - target KW - proton KW - radiation KW - experiment KW - vacuum DA - 2018/11 PY - 2018 SN - 978-3-95450-197-7 DO - 10.18429/JACoW-RUPAC2018-TUPSA49 UR - http://jacow.org/rupac2018/papers/tupsa49.pdf ER -