Pepan Letters
Annual Reports
To Authors

Preprints and Communications

Here you can find JINR preprints and communications in pdf format starting from 1999.
File size is given in bytes in round brackets.

Subject Categories for JINR Publications Archive (1999 - 2018)

P16-2019-16 (329.957)
Mokrov Yu. V., Morozova S. V.
The Correction of Albedo Dosimeters DVGN-01 Readout at the Neutron Generator EG-5 with the Help of a Spherical Albedo System

The results of readout correction for albedo dosimeters DVGN-01 using a spherical albedo system are presented. The measurements were carried out behind the neutron generator EG-5. On the basis of the presented results, the correction coefficients were recommended for individual radiation control at the neutron generator.

P11-2019-9 (86.985)
Amirkhanov I. V., Sarker N. R., Sarkhadov I.
About One Method of Approximate-Analytical Solution of the Quantum-Mechanical Three-Body Problem

A method is proposed for investigating the solutions of a single quantum-mechanical three-body problem. The boundary value problem for a system of two particles moving in the potential field of the third particle is studied. The interaction potentials between the particles are chosen to be quadratically growing. In this case, the two-body problem has an exact solution. The solution of the original three-body problem is represented as an expansion in the solutions of the two-body problem. The coefficients of the expansion yield a homogeneous linear matrix equation. Equating the determinant of this equation to zero, we find the eigenvalues of the original problem and the coefficients of the expansion. Since the elements of the matrix of algebraic equations with solutions of the two-body problem are calculated analytically, the eigenvalues of the three-body problem depend explicitly on the parameters of the potentials. Changing these parameters in an arbitrary way, we can obtain the desired spectra, i.e., one can control the eigenvalues of the original problem.

P3-2019-8 (239.209)
Rzyanin M. V., Shabalin E. P.
On the Issue of Stability and Safety of the Superbooster «Neptun»

Highly intense pulsed neutron source which should replace the pulsed reactor IBR-2M currently in operation after its wear-out, can be made as superbooster, that is a powerful breeder of neutrons produced in accelerating proton target. Usually, superbooster is considered to be a safe and reliable nuclear facility. However, as indicated in the paper, powerful superbooster can be less stable in operation than pulsed reactor. Therefore, problems of its safety call for close study.

E9-2019-4 (170.120)
Sumbaev A. P., Barnyakov A. Yu., Levichev A. E.
On the Limits for the Accelerated Beam Current in the LUE-200 Linac of the IREN Faility

The beam current loading of the accelerating fields is discussed for the linear accelerator LUE-200 of the IREN facility (a neutron source at the Frank Laboratory of Neutron Physics, JINR). The LUE-200 electron linac consists of two disk loaded traveling wave accelerating structures with the operating frequency of 2856 MHz and SLED-type power compression system. The limits for the accelerated beam current are defined for different pulse durations of the beam current and RF power. The calculated results are discussed and compared with the measurements.

E9-2019-2 (585.768)
Karamyshev O. et al.
Conceptual Design of the SC230 Superconducting Cyclotron for Proton Therapy

Physical design of the compact superconducting cyclotron SC230 has been performed. The cyclotron will deliver up to 230 MeV beam for proton therapy and medico-biological research. We have performed simulations of magnetic and accelerating systems of the SC230 cyclotron and specified the main parameters of the accelerator. Possible schema of the extraction system and preliminary results of beam dynamics simulations are presented. Codes and methods used for the beam tracking are shortly described.