CERN Accelerating science

Article
Title	A Cryo Complex Control
Author(s)	Alferov, V ; Bakay, A ; Fedorchenko, V ; Ivanova, N ; Kholkin, A ; Klimov, S ; Krendelev, V ; Kuznetsov, S ; Lukyantsev, A ; Lutchev, A ; Milutkin, V ; Sytin, A N ; Vasilev, D
Publication	2004
In:	19th Russian Accelerator Conference, Dubna, Russian Federation, 4 - 9 Oct 2004, pp.313
Subject category	Accelerators and Storage Rings
Abstract	A Cryogenic complex is being constructed to provide by liquid helium and nitrogen the RF-separator of kaons. <br /> About 500 parameters including temperature (1,8&#8230;300)K, liquid helium/nitrogen level, vacuum, 300 digital signals have to be measured, 70 commands generated, 20 closed loops activated. <br /> The paper describes controls electronics which includes home made I8051 compatible controllers connected by the CAN field bus to a bus controller and interface electronic modules for: <dd> - temperature measurements;</dd> <dd> - liquid Ni and He level measurements;</dd> <dd> - vacuum pumps current measurements;</dd> <dd> - analog and digital signals measurements and generations.</dd> The modules are tested together with signal imitators within a vertical slice of the Control System based on EPICS tools.