First results on the measurements of the proton beam polarization at internal target at Nuclotron<sup>1</sup>

Ladygin, V. P.; Gurchin, Yu. V.; Isupov, A.; Janek, M.; Khrenov, A. N.; Kurilkin, P. K.; Livanov, A. N.; Piyadin, S. M.; Reznikov, S. G.; Skhomenko, Ya.T.; Terekhin, A. A.; Tishevsky, A. V.; Averyanov, Alexander; Bazylev, S. N.; Белов, А. С.; Butenko, A. V.; Chernykh, E.V.; Filatov, Yu. N.; Fimushkin, V. V.; Krivenkov, D. O.; Kondratenko, A. M.; Kondratenko, M. A.; Kovalenko, A. D.; Slepnev, I. V.; Slepnev, V. M.; Shutov, A. V.; Sidorin, A. O.; Vnukov, I. E.; Volkov, V. S.

doi:10.1088/1742-6596/938/1/012008

Cited by 5 publications

(3 citation statements)

References 14 publications

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“…• The first measurements of the 500 MeV proton beam polarization were also performed during the 54 th run [13].…”

Section: Discussionmentioning

confidence: 99%

“…The new powerful VME-based data acquisition (DAQ) system has been designed for the Deuteron Spin Structure (DSS) setup [1], [8], [9], [10] placed at the Nuclotron Internal Target Station (ITS) [2]. The DSS studies the polarization observables in the d p elastic scattering for several years [11], [12], [13], [14]. Vector and tensor polarizations of the deuteron and proton beams from the LHEP-JINR polarized ions source (SPI) [15], as well as A y , A yy , A xx analyzing powers of the reactions have been successfully measured in the beam energy range from 135 MeV/nucleon to 900 MeV/nucleon.…”

Section: Introductionmentioning

confidence: 99%

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VME–based DAQ system for the Deuteron Spin Structure setup at the Nuclotron internal target station

Isupov

2019

EPJ Web Conf.

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The new powerful VME–based data acquisition (DAQ) system has been designed for the Deuteron Spin Structure setup [1] placed at the Nuclotron Internal Target Station [2]. The DAQ system is built using the netgraph–based data acquisition and processing framework ngdp [3, 4]. The software dealing with VME hardware is a set of netgraph nodes in the form of the loadable kernel modules. The specific for current implementation nodes are described, while specific software utilities for the user context are the following. The b2r (binary–to–ROOT) server converts raw data into per trigger and per accelerator spill representations, which are based on C++ classes derived from the ROOT framework [5] ones. This approach allows us to generalize the code for histograms filling and polarization calculations. The b2r optionally stores ROOT events as ROOT TTree in file(s) on HDD, and supports the design of some express offine. The histGUI software module provides an interactive online access for human operator to histograms filled by the r2h (ROOT–to–histograms) server, which obtains the ROOT event representations from b2r. The r2h supports the calculation and histograming of runtime configurable variables as well as raw data variables, and optionally stores ROOT histograms in file(s) on HDD. Since the spin studies at the Nuclotron require fast and precise determination of the deuteron and proton beam polarization, the polarization calculator software module is introduced. This calculator based on runtime configurable r2h code allows us to compute polarization values online and integrate them into the Web–based scheme of representation and control of the polarimeters [6, 7].

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“…• The first measurements of the 500 MeV proton beam polarization were also performed during the 54 th run [13].…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

VME–based DAQ system for the Deuteron Spin Structure setup at the Nuclotron internal target station

Isupov

2019

EPJ Web Conf.

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“…Further theoretical investigations are required to understand the behaviour of the data at large P T . The availability of the polarized proton beam at Nuclotron [37] allows to extend the DSS physics program at ITS [13], namely, to perform the experiments on the measurements of the nucleon analyzing power A p y in pd-elastic scattering at 135-1000 MeV and in pd-non-mesonic breakup at the energies between 135-250 MeV for different kinematic configurations etc.…”

Section: Pos(spin2018)023mentioning

confidence: 99%

Spin studies of the short-range correlations at Nuclotron

Ladygin¹,

Averyanov²,

Chernykh³

et al. 2019

Proceedings of 23rd International Spin Physics Symposium — PoS(SPIN2018)

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Spin Studies of the Short-Range Correlations with Polarized Beams at JINR-Nuclotron

Ladygin

Averyanov

Chernykh

et al. 2019

Proceedings of the 8th International Conference on Quarks and Nuclear Physics (QNP2018)

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The results on the angular dependencies of the vector A y and tensor A yy and A xx analyzing powers in deuteron-proton elastic scattering at large scattering angles are presented. These data were obtained at internal target at JINR Nuclotron in the energy range 400-1800 MeV using polarized deuteron beam from new polarized ion source. New 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.

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First results on the measurements of the proton beam polarization at internal target at Nuclotron¹

Cited by 5 publications

References 14 publications

VME–based DAQ system for the Deuteron Spin Structure setup at the Nuclotron internal target station

VME–based DAQ system for the Deuteron Spin Structure setup at the Nuclotron internal target station

Spin studies of the short-range correlations at Nuclotron

Spin Studies of the Short-Range Correlations with Polarized Beams at JINR-Nuclotron

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First results on the measurements of the proton beam polarization at internal target at Nuclotron1

Cited by 5 publications

References 14 publications

VME–based DAQ system for the Deuteron Spin Structure setup at the Nuclotron internal target station

VME–based DAQ system for the Deuteron Spin Structure setup at the Nuclotron internal target station

Spin studies of the short-range correlations at Nuclotron

Spin Studies of the Short-Range Correlations with Polarized Beams at JINR-Nuclotron

Contact Info

Product

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First results on the measurements of the proton beam polarization at internal target at Nuclotron¹