Obtaining new data on the polarization observables is the important part of the nucleon–nucleon scattering models’ development. For this purpose, the polarized deuteron beam and the detection setup at the Nuclotron internal target station were used. Counters were mounted in according to pp -elastic scattering kinematics. Relevant events were selected using time and amplitude information from the counters. The polyethylene target was used as the main target. Auxiliary carbon target was used to remove the background. This article presents the results of the vector analyzing power measurement for the proton–proton quasi-elastic scattering at the deuteron beam energies of 200, 500, 550, 650 MeV/nucleon. The obtained results are in a good accordance with the data of other experiments and the partial wave analyzis SP07 SAID predictions.

The deuteron beam vector polarization was obtained at the Nuclotron Internal Target Station using the proton–proton quasielastic scattering on the polyethylene target at the beam energies of 200, 500, 550, and 650 MeV/nucleon. The selection of useful events was performed using the time and amplitude information from the scintillation counters. The asymmetry on hydrogen was obtained by the subtraction of the carbon background. The obtained values are compared with the data obtained using the deuteron–proton elastic scattering at the beam energy of 135 MeV/nucleon.

Recent results on the spin effects in deuteron-proton elastic scattering, beam and focal polarimetry using polarized deuteron and proton beams from new polarized ion source at Nuclotron-JINR facility are discussed. The vector $A_y$ and tensor $A_{yy}$ and $A_{xx}$ analyzing powers in deuteron-proton elastic scattering at large transverse momenta obtained at internal target at Nuclotron in the energy range 400-1800 MeV are obtained. These data on the deuteron analyzing powers in the wide energy range demonstrate the sensitivity to the short-range spin structure of the isoscalar nucleon-nucleon correlations. The perspectives of further progress in physics program as well as in the development of the polarimetry and proton spin manipulation techniques are disscussed.

The values of the analyzing power in quasi-elastic proton-proton (pp) scattering are obtained at the Nuclotron Internal Target Station using a polarized deuteron beam at an energy of 500 MeV/nucleon and the polyethylene target. The selection of useful events has been performed using the time and amplitude information from scintillation counters. Asymmetry by protons has been obtained by the subtraction of the carbon background from the data accumulated on polyethylene. The analyzing power values are compared with predictions of SAID partial-wave analysis and the data of other experiments.

The deuteron beam vector polarization was obtained at the Nuclotron Internal Target Station using proton-proton quasielastic scattering on the polyethylene target at the beam energies of 200, 500, 550, and 650 MeV/nucleon. The proton beam polarization was obtained at the beam energy of 500 MeV. The selection of useful events was performed using the time and amplitude information from the scintillation counters and the subtraction of the carbon background, both for the deuteron and proton beams.

Effective cross section and analyzing powers of the elastic dp process are obtained and partially processed in the energy range 200–2000 MeV. The results are compared with a relativistic model of multiple scattering. The deuteron breakup reaction in the region of hundreds of MeV have rich phase space, by scanning, angular and energetic we can learn more about short-range correlations of nucleons or e.g. on non-nucleonic degrees of freedom depending on the selected part of the phase space.

The deuteron beam vector polarization is obtained at the Nuclotron Internal Target Station using quasielastic proton–proton scattering on the polyethylene target. The selection of useful events is performed using the time and amplitude information from scintillation counters. The asymmetry on the hydrogen is obtained by the subtraction of the carbon background. The values of vector polarization are obtained at the beam energies of 500 and 650 MeV/nucleon. The obtained values are compared with the data obtained in the deuteron–proton elastic scattering at the beam energy of 135 MeV/nucleon.

Analyzing power of proton-proton quasi-elastic scattering was obtained at the Nuclotron Internal Target Station using a polarized deuteron beam and a polyethylene target. The selection of useful events was performed using the time and amplitude information from scintillation counters. The asymmetry on hydrogen was obtained using the process of the carbon background subtraction. The obtained analyzing power values are compared with the predictions of the partial-wave analysis SAID at the beam energy of 550 MeV/nucleon.

The deuteron beam vector polarization is obtained at the Nuclotron Internal Target Station using quasielastic proton–proton scattering on the polyethylene target. The selection of useful events is performed using the time and amplitude information from scintillation counters. The asymmetry on the hydrogen is obtained by the subtraction of the carbon background. The values of vector polarization are obtained at the beam energies of 500 and 650 MeV/nucleon. The obtained values are compared with the data obtained in the deuteron–proton elastic scattering at the beam energy of 135 MeV/nucleon.

The vector analyzing power of quasi-elastic proton–proton scattering is obtained at the Nuclotron Internal Target Station using a polarized deuteron beam and a polyethylene target. Useful events are selected on the basis of data from scintillation counters on time and amplitude. The asymmetry on hydrogen is obtained by subtracting the carbon background. Values of the vector analyzing power are obtained at beam energies of 200, 500, 550, and 650 MeV/nucleon. The values are compared to predictions from a SAID partial-wave analysis.

The data on the vector Ay and tensor Ayy and Axx analyzing powers in elastic deuteron–proton scattering at large transverse momenta are presented. These were obtained in the energy range of 400 to 1800 MeV using the internal target at the JINR Nuclotron and the polarized deuteron beam from a new polarized ion source. The new data on the deuteron analyzing powers in a wide energy range demonstrate sensitivity to the spin structure of isoscalar nucleon-nucleon correlations at small distances.

The Nuclotron-based Ion Collider fAcility (NICA) is under construction at the Joint Institute for Nuclear Research (JINR), with commissioning of the facility expected in late 2022. The Multi-Purpose Detector (MPD) has been designed to operate at NICA and its components are currently in production. The detector is expected to be ready for data taking with the first beams from NICA. This document provides an overview of the landscape of the investigation of the QCD phase diagram in the region of maximum baryonic density, where NICA and MPD will be able to provide significant and unique input. It also provides a detailed description of the MPD set-up, including its various subsystems as well as its support and computing infrastructures. Selected performance studies for particular physics measurements at MPD are presented and discussed in the context of existing data and theoretical expectations.

C.F. Perdrisat, the College of William and Mary, Williamsburg, VA 23187, USA V. Punjabi, Norfolk State University, Norfolk, VA 23504, USA M.K. Jones, Thomas Jefferson National Accelerator Facility, Newport News, VA 23606, USA E. Brash, Christopher Newport University and TJNAF G. Martinska, J. Urban, University of P.J. Šafarik, Jesenna. 5, SK-04154 Košice, Slovak Republic J. Mušinsky, Institute of Experimental Physics, Watsonova 47, SK-04001 Kosice, Slovak Republic E. Tomasi-Gustafsson, IRFU, DPHN, CEA, Université ParisSaclay, 91191 Gif-surYvette, France D. Marchand, IPN Orsay, 91406 ORSAY cedex, France J. R.M. Annand, K. Hamilton, R. Montgomery, University of Glasgow, Glasgow G12 8QQ, Scotland, UK

The differential cross sections of the charge exchange reaction $$dp \rightarrow (pp)n$$ has been measured at 1.75 GeV/c per nucleon for small transferred momenta using the one arm magnetic spectrometer STRELA at the Nuclotron accelerator in JINR Dubna. The ratio of the differential cross section of the charge exchange reaction $$dp \rightarrow (pp)n$$ to that of the $$np \rightarrow pn$$ elementary process is discussed in order to estimate the spin-dependent part of the $$np \rightarrow pn$$ charge exchange amplitude. The $$np \rightarrow pn$$ amplitude turned out to be predominantly spin-dependent.

The differential cross sections of the charge exchange reaction dp → (pp)n has been measured at 1.75 GeV/c momentum per nucleon for small transferred momenta using the one arm magnetic spectrometer STRELA at the Nuclotron accelerator. The ratio of the differential cross section of the charge exchange reaction dp → (pp)n to that of the np → pn elementary process is discussed in order to estimate the spin-dependent part of the np → pn charge exchange amplitude on the basis of dp → (pp)n data. The np → pn amplitude turned out to be predominantly spin-dependent.

The polarization observables are sensitive to the two nucleon (2NF) and three-nucleon structures (3NF) of the nuclei. The aim of the deuteron spin structure (DSS) experiment is to obtain polarization observables in dp elastic scattering at large CMS angles (> 60 degrees) and in dp breakup. Of great importance is the study of polarizations observables in these reactions at intermediate energies because the experimental and theoretical data are very scarce. In this review, results of vector and tensor analyzing powers obtained at JINR Nuclotron at 800 MeV will be presented.

The dp breakup reaction has been investigated by the scintillation detectors placed at the vicinity of Internal Target Station (ITS) of Nuclotron. Data have been obtained at the angles of 19 degrees - 54 degrees in the laboratory frame at the deuteron energy of 300 - 500 MeV in a various detector configurations in which the sensitivity to the three nucleon correlations and relativistic effects are assumed. Preliminary results of the five fold differential cross section for particular detector configurations of the dp breakup reaction at 400 MeV of deuteron energy have been obtained.

The analyzing powers for neutron charge exchange nA → pX reactions on nuclei have been measured on C, CH2 and Cu targets at incident neutron momenta 3.0 - 4.2 GeV/c by detecting one charged particle in forward direction. The polarized neutron measurements are the first of their kind. The experiment was performed using the Nuclotron accelerator in JINR Dubna, where polarized neutrons and protons were obtained from breakup of a polarized deuteron beam which has a maximum momentum of 13 GeV/c. The polarimeter ALPOM2 was used to obtain the analyzing power dependence on the transverse momentum of the final-state nucleon. These data have been used to estimate the figure of merit of a proposed experiment at Jefferson Laboratory to measure the recoiling neutron polarization in the quasi-elastic 2H(e, e′n) reaction, which yields information on the charge and magnetic elastic form factors of the neutron.

The current deuteron beam polarimetry at Nuclotron is provided by the Internal Target polarimeter based on the use of the asymmetry in dp- elastic scattering at large angles in the cms at 270 MeV. The upgraded deuteron beam polarimeter has been used obtain the vector and tensor polarization during 2016/2017 runs for the DSS experimental program. The polarimeter has been used also for tuning of the polarized ion source parameters for 6 different spin modes.