Experiments on beam extraction from the Nuclotron, a superferric heavy ion synchrotron, were carried out last year and in March, 2001. The resonance Qx=20/3, used for a horizontal betatron amplitude growth, provides beam entering the Electrostatic Septum deflector, where it obtains an initial deflection to avoid losses on the septum of the Lambertson Magnet. The latter bends the beam in the vertical plane to the level of the experimental halls. An extraction coefficient of about 70% and a spill time of 0.4s were obtained in the first experiments performed at the deuteron beam energy from 200MeV/amu to 1.5GeV/amu. Then, experiments on irradiation with C +6 and Mg +12 beams were performed on the external targets. The work, which permits one to improve the parameters of the extracted beam up to the projected ones, is discussed.
The operation of a gamma densitometer (GD) of ID = 100 mm is considered; it is intended for the diagnostics of three-phase oil-water-gas flows using the separationless method, when the composition of components is determined by a spectrometric analysis of gamma irradiation with two different photon energies. The 241 Am and 137 Cs isotopes, installed in the same housing, are used as gamma sources, while a gamma detector is made on the basis of the BGO crystal of 40 mm in diameter and height. Information about the design, measuring electronics, and main characteristics of the GD is given. The method used for the temperature stabilization of the recorded radiation intensities for both isotopes within a range of ambient temperature from 10 to 35 o C is presented.
The superconducting synchrotron Nuclotron [1] was put into operation in March 1993 at the Laboratory of High Energies, JINR in Dubna. The Nuclotron Control System (NCS) [2] provided an efficient support for the machine operation during all runs. The dedicated NCS subsystem for beam diagnostics in the injection transfer line and the Nuclotron ring is described.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.