References - Bogoliubov Laboratory of Theoretical Physics - JINR

DEUTERON BEAM POLARIMETRY AT THE INTERNAL TARGET
STATION AT NUCLOTRON-M AT GeV ENERGIES
P.K. Kurilkin 1,7,† , Yu.V. Gurchin 1 , A.Yu. Isupov 1 ,K.Itoh 2 ,M.Janek 1,3 ,
J.−T. Karachuk 1,4 ,T.Kawabata 5 ,A.N.Khrenov 1 , A.S. Kiselev 1 ,V.A.Kizka 1 ,
V.A. Krasnov 1,6 ,V.P.Ladygin 1,7 , N.B. Ladygina 1 , A.N. Livanov 1,6 ,Y.Maeda 8 ,
A.I. Malakhov 1 ,S.G.Reznikov 1 , S. Sakaguchi 5 , H. Sakai 5,9 , Y. Sasamoto 5 ,
K. Sekiguchi 10 , M.A. Shikhalev 1 , K. Suda 10 ,T.Uesaka 5 , T.A. Vasiliev 1,7 and H. Witala 11
(1) a) JINR, 141980, Dubna, Moscow region, Russia
(10) b) IPCR (RIKEN), Saitama 351-0198, Wako, Japan
(5) c) CNS, University of Tokyo, Saitama 351-0198, Wako ,Japan
(2) d) Department of Physics, 255 Shimo-Okubo, Saitama University, Urawa, Saitama 338,
Japan
(3) e) IEP SAS, 04001, Koˇsice, Slovak Republic
(4) f) Advanced Research Institute for Electrical Engineering, 74204, Bucharest, Romania
(6) g) INR RAS, 117312, Moscow, Russia
(8) h) Kyushi University, Fukuoka 812-8581, Hakozaki, Japan
(9) i) University of Tokyo, 113-0033, Tokyo, Japan
(11) j) M. Smoluchowski Institute of Physics, Jagiellonian University, PL-30-059, Kraków,
Poland
(7) Moscow State Institute of Radio-engineering Electronics and Automation (Technical
University), Moscow, Russia
† E-mail: pkurilkin@jinr.ru
Abstract
A polarimeter based on the asymmetry measurement of the deuteron-proton
elastic scattering has been constructed at Internal Target Station of Nuclotron-
M(JINR). It allows to measure vector and tensor components of the deuteron polarization
simultaneously. We have measured also the analyzing powers Ay, Ayy
and Axx in the d − p elastic scattering at 880 and 2000 MeV. The analyzing powers
values at angles in the c.m. are large enough to provide the efficient polarimetry at
these energies.
Measurement of the beam polarization is an important element in the experiments
on the spin physics studies. The deuteron beam has vector and tensor polarization in
general. As far as possible it is necessary to conduct the simultaneous measurement both
components of the deuteron beam polarization.
The polarimetry based on zero−degree inclusive deuteron breakup from a proton target
and pp quasi−elastic scattering are currently used at LHEP Accelerator Complex to
provide the polarimetry of the deuterons at GeV−energies. These polarimeters do not fit
the requirement of the vector-tensor mixed polarimetry, because the first and the second
one have no vector and tensor analyzing powers, respectively.
On the other hand, d − p elastic scattering at forward scattering angles is traditionally
used for the tensor and vector polarimetry at intermediate energies. The polarization
of the deuteron beam was measured using the d − p elastic scattering at 1600 MeV at
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