CERN Accelerating science

Article
Title	Slow Extraction System From Ihep Accelerator U-70 Status And Development
Author(s)	Fedotov, Y S ; Afonin, A G ; Karshev, Yu G ; Lapin, V V ; Maximov, A V ; Minchenko, A V ; Sulygin, I I ; Terekhov, V I ; Trojanov, E F
Publication	2004
In:	19th Russian Accelerator Conference, Dubna, Russian Federation, 4 - 9 Oct 2004, pp.68
Subject category	Accelerators and Storage Rings
Abstract	Slow extraction system of the accelerated proton beam from U-70 is used for physical experiments with the counting principles with the spill duration of 1-2 seconds on the flat-top magnetic field at energy 50-70 GeV. The slow extraction system commissioning took place in 1979. Initial efficiency of an extraction did not exceed 83-85%. Inclusion in extraction system an electrostatic deflector with the wire septum of 0.1 mm thickness has allowed to simplify the scheme of an extraction which began to contain only two septum-magnets in 24-th and 26-th straight sections. Extraction efficiency was 85-87% that was insufficiently for an extraction of intensity more 1&#183;10<sup><font size="-1">13