-
P. K. Kurilkin,
V. P. Ladygin,
T. Uesaka,
K. Suda,
Yu. V. Gurchin,
A. Yu. Isupov,
K. Itoh,
M. Janek,
J. -T. Karachuk,
T. Kawabata, [......],
A. I. Malakhov,
S. M. Piyadin,
S. G. Reznikov,
S. Sakaguchi,
H. Sakai,
Y. Sasamoto,
K. Sekiguchi,
M. A. Shikhalev,
T. A. Vasiliev,
H. Witala
[show abstract]
[hide abstract]
ABSTRACT: The vector Ay and tensor analyzing powers Ayy and Axx for dp- elastic
scattering were measured at Td = 880 MeV over the c.m. angular range from 60 to
140 degrees at the JINR Nuclotron. The data are compared with predictions of
different theoretical models based on the use of nucleon-nucleon forces only.
The observed discrepancies of the measured analyzing powers from the
calculations require the consideration of additional mechanisms.
07/2012;
-
S. M. Piyadin,
T. A. Vasiliev,
Yu. V. Gurchin,
A. Yu. Isupov,
Yu. T. Karachuk,
V. A. Krasnov,
A. K. Kurilkin,
P. K. Kurilkin,
V. P. Ladygin, A. N. Livanov,
G. Martinska,
S. G. Reznikov,
A. K. Semenov,
A. E. Tumanov,
A. N. Khrenov,
M. Janek
[show abstract]
[hide abstract]
ABSTRACT: A design for a ΔE-E detector to investigate deuteron breakup in the Nuclotron-M internal target in a deuteron energy interval of 300–500 MeV
is presented. The high-voltage power supply system of the PMT-63, which is based on the computer-controlled Wenzel Electronik
module, is briefly described. A light-emitting diode (LED) monitoring system for the ΔE-E detector is considered. The results of testing the ΔE-E detector using cosmic muons and deuteron beams of the Nuclotron are presented.
Physics of Particles and Nuclei Letters 04/2012; 8(2):107-113.
-
P. K. Kurilkin,
V. P. Ladygin,
T Uesaka,
V V Glagolev,
Yu. V. Gurchin,
A. Yu. Isupov,
K Itoh,
M. Janek,
J.-T. Karachuk,
T Kawabata, [......],
S. G. Reznikov,
P. A. Rukoyatkin,
S Sakaguchi,
H Sakai,
K Sekiguchi,
K Suda,
A.A. Terekhin,
J. Urban,
T. A. Vasiliev,
I.E. Vnukov
[show abstract]
[hide abstract]
ABSTRACT: The investigation of the d, 3H and 3He spin structure has been performed at
the RIKEN(Japan) accelerator research facility and VBLHEP(JINR) using both
polarized and unpolarized deuteron beams. The experimental results on the
analyzing powers studies in dp- elastic scattering, d(d,3H)p and d(d,3He)n
reactions are presented. The vector and tensor analyzing powers for dp-elastic
scattering at 880 and 2000 MeV are obtained at the Nuclotron(VBLHEP). The
result on the analyzing powers Ay, Ayy of the deuteron at 2000 MeV are compared
with relativistic multiple scattering model calculations. The data on the
tensor analyzing powers for the d(d,3H)p and d(d,3He)n reactions obtained at Ed
= 200 and 270 MeV demonstrate the sensitivity to the 3H, 3He and deuteron spin
structure. The essential disagreements between the experimental results and the
theoretical calculations within the one-nucleon exchange model framework are
observed. The wide experimental program on the study of the polarization
effects in dp- elastic scattering, dp-nonmesonic breakup, d(d,3He)n, d(d,3H)p
and d(3He,4He)p reactions using internal and extracted beam at Nuclotron is
discussed.
09/2011;
-
V P Ladygin,
T Uesaka,
V V Glagolev,
Yu V Gurchin,
A Yu Isupov,
K Itoh,
M Janek,
J-T Karachuk,
T Kawabata,
A N Khrenov, [......],
S Sakaguchi,
H Sakai,
K Sekiguchi,
M A Shikhalev,
K Suda,
A A Terekhin,
J Urban,
T A Vasiliev,
I E Vnukov,
H Witala
[show abstract]
[hide abstract]
ABSTRACT: Recent results on the deuteron analyzing powers obtained in collisions of polarized deuterons with protons and light nuclei at intermediate and high energies are reported. The obtained results are sensitive to the spin structure of the short range correlations. The prospects of the spin program for hadronic reactions at Nuclotron-NICA facility is discussed. The polarimetry developments are also presented.
Journal of Physics Conference Series 05/2011; 295(1):012131.
-
P. K. Kurilkin,
V. P. Ladygin,
T Uesaka,
K Suda,
Yu. V. Gurchin,
A. Yu. Isupov,
K Itoh,
M. Janek,
J.-T. Karachuk,
T Kawabata, [......],
A I Malakhov,
V. Matousek,
M. Morhach,
S. G. Reznikov,
S Sakaguchi,
H Sakai,
Y Sasamoto,
K Sekiguchi,
I. Turzo,
T. A. Vasiliev
[show abstract]
[hide abstract]
ABSTRACT: A deuteron beam polarimeter has been constructed at the Internal Target
Station
at the Nuclotron of JINR. The polarimeter is based on spin-asymmetry
measurements in the d-p elastic scattering at large angles and the deuteron
kinetic energy of 270 MeV. It allows to measure vector and tensor components of
the deuteron beam polarization
simultaneously.
05/2010;
-
V. P. Ladygin,
T. Uesaka,
L. S. Azhgirey,
Yu. V. Gurchin,
A. Yu. Isupov,
K. Itoh,
M. Janek,
J.-T. Karachuk,
T. Kawabata,
A. N. Khrenov, [......],
H. Sakai,
Y. Sasamoto,
K. Sekiguchi,
M. A. Shikhalev,
K. Suda,
A. A. Terekhin,
J. Urban,
T. A. Vasiliev,
I. E. Vnukov,
H. Witala
[show abstract]
[hide abstract]
ABSTRACT: The status and prospects of 2-nucleon and 3-nucleon short range
correlations (SRCs) studies at Nuclotron-M (JINR) are presented. This
program is focused on the investigations of the spin part of SRCs with
polarized deuteron beam from new high intensity polarized deuterons ion
source which is under development at JINR. The wide experimental program
on the systematic studies of the polarization effects in dp- elastic
scattering, dp- nonmesonic breakup, dd →
3Hen(3Hp) and d3He →
p4He reactions sensitive to SRCs using both internal and
extracted beam at Nuclotron-M is presented.
03/2010; 3:04004.
-
V. P. Ladygin,
T. Uesaka,
L. S. Azhgirey,
K. Suda,
P. K. Kurilkin,
Yu. V. Gurchin,
K. Itoh,
A. Yu. Isupov,
M. Janek,
J.-T. Karachuk, [......],
S. M. Piyadin,
S. G. Reznikov,
S. Sakaguchi,
H. Sakai,
Y. Sasamoto,
K. Sekiguchi,
M. A. Shikhalev,
I. Turzo,
T. A. Vasiliev,
H. Witała
[show abstract]
[hide abstract]
ABSTRACT: Recent results on the spin effects in deuteron inclusive breakup and deuteron-proton elastic scattering obtained at the Veksler
and Baldin Laboratory of High Energies at JINR are reported. The experimental data have been obtained with the use of a high-energy
polarized deuteron beam at the Synchrophasotron-Nuclotron Accelerator Complex. The covered energy range corresponds to the
short internucleonic distances where the relativistic effects and non-nucleonic degrees of freedom can play a significant
role.
Few-Body Systems 11/2008; 44(1):45-48. · 1.44 Impact Factor
-
V. P. Ladygin,
L. S. Azhgirey,
T. Uesaka,
Yu. V. Gurchin,
A. Yu. Isupov,
K. Itoh,
M. Janek,
J.‐T. Karachuk,
T. Kawabata,
V. A. Krasnov, [......],
S. M. Piyadin,
S. G. Reznikov,
S. Sakaguchi,
H. Sakai,
Y. Sasamoto,
K. Sekiguchi,
M. A. Shikhalev,
K. Suda,
T. A. Vasiliev,
H. Witala
[show abstract]
[hide abstract]
ABSTRACT: The review of recent results from polarization experiments performed at LHEP‐JINR Accelerator Complex in a GeV range is given. The current status of the spin program at Nuclotron as well as its further continuation with new high intensity polarized deuterons ion source is discussed.
AIP Conference Proceedings. 10/2008; 1056(1):420-427.
-
M. Janek,
V. P. Ladygin,
L. S. Azhgirey,
T. Uesaka,
Yu. V. Gurchin,
M. Hatano,
K. Itoh,
A. Yu. Isupov,
J. -T. Karachuk,
H. Kato, [......],
Y. Satou,
K. Sekiguchi,
K. Suda,
M. A. Shikhalev,
A. Tamii,
I. Turzo,
N. Uchigashima,
T. A. Vasiliev,
K. Yako,
L. S. Zolin
[show abstract]
[hide abstract]
ABSTRACT: The investigation of the spin structure of d, 3H, and 3He has been performed at the RIKEN acceleration research facility and VBLHE. Vector A
y
and tensor A
yy
, A
xx
, A
xz
analyzing powers for $
\vec d
$
\vec d
d → 3Hen and $
\vec d
$
\vec d
d → 3Hp are presented at 270 MeV. Themirror channels (3Hen and 3Hp) are comparedto each other in order to find possible manifestation of charge-symmetry breaking. The preliminary results on
the polarization observables for $
\vec d
$
\vec d
d → 3Hp at 200MeV are also presented. The obtained data are compared with one-nucleon-exchange calculations.As a byproduct, $
\vec d
$
\vec d
d → pX and $
\vec d
$
\vec d
12C → pX breakup reactions are investigated at 140, 200, and 270MeV. The experimental data on $
\vec d
$
\vec d
p elastic scattering were obtained at 270, 880, and 2000 MeV at the Nuclotron. The polarization of the deuteron beam was measured
at 270 MeV at the internal target station. The preliminary data on the vector A
y
and tensor A
yy
, A
xx
analyzing powers for the $
\vec d
$
\vec d
p elastic scattering at 880 MeV are presented. The calculations on A
y
, A
yy
, and A
xx
analyzing powers for the $
\vec d
$
\vec d
p elastic scattering at 880 MeV were performed in the framework of the multiple-scattering model.
Physics of Atomic Nuclei 08/2008; 71(9):1495-1501. · 0.57 Impact Factor
-
P. K. Kurilkin,
K. Suda,
T. Uesaka,
V. P. Ladygin,
Yu. V. Gurchin,
A. Yu. Isupov,
K. Itoh,
M. Janek,
J. -T. Karachuk,
T. Kawabata, [......],
M. Morhac,
S. G. Reznikov,
S. Sakaguchi,
H. Sakai,
Y. Sasamoto,
K. Sekiguchi,
M. A. Shikhalev,
I. Turzo,
T. A. Vasiliev,
H. Witala
[show abstract]
[hide abstract]
ABSTRACT: The preliminary results on the angular distributions of the vector A
y
and tensor A
yy
, A
xx
analyzing powers in dp elastic scattering at T
d
= 880MeV are presented. A region of center-of-mass system angles from 60° to 140° is covered. The experimental data are compared
with the preliminary calculations obtained within framework of different theoretical approaches.
The experiment has been performed at the Internal Target Station at Nuclotron within the framework of the program on the study
of light nuclei spin structure proposed at JINR (Russia) and RIBF (Japan).
The European Physical Journal Special Topics 01/2008; 162(1):137-141. · 1.56 Impact Factor
-
K. Suda,
T. Uesaka,
V. P. Ladygin,
Y. Maeda,
P. K. Kurilkin,
Yu. V. Gurchin,
A. Yu. Isupov,
K. Itoh,
M. Janek,
J.‐T. Karachuk, [......],
V. Matoucek,
M. Morhac,
S. M. Piyadin,
S. G. Reznikov,
S. Sakaguchi,
H. Sakai,
Y. Sasamoto,
K. Sekiguchi,
I. Turzo,
T. A. Vasiliev
[show abstract]
[hide abstract]
ABSTRACT: A high‐energy deuteron beam polarimeter based on the d‐p elastic scattering at backward angles has been constructed at Internal Target Station of Nuclotron at JINR. Calibration measurement of the analyzing powers Ay, Ayy, and Axx with polarized deuteron beams at 0.88 and 2.0 GeV was performed. © 2007 American Institute of Physics
AIP Conference Proceedings. 06/2007; 915(1):920-923.
-
Yu. V. Gurchin,
V. A. Krasnov,
V. P. Ladygin,
Yu. S. Anisimov,
A. Yu. Isupov,
M. Janek,
J.- T. Karachuk,
A. N. Khrenov,
A. S. Kiselev,
V. A. Kizka,
J. Kliman, A. N. Livanov,
A. I. Malakhov,
V. Matousek,
M. Morhac,
S. G. Reznikov,
I. Turzo,
T. A. Vasiliev
[show abstract]
[hide abstract]
ABSTRACT: The principle of the internal target position monitor at the Nuclotron is described. It has been developed for use in experiments
with detection of particles in the forward direction. The first results obtained using the target position monitor with a
polarized deuteron beam at the Nuclotron are presented.
Physics of Particles and Nuclei Letters 04/2007; 4(3):263-267.
-
T. Uesaka,
V. P. Ladygin,
L. S. Azhgirey,
Yu. V. Gurchin,
A. Yu. Isupov,
K. Itoh,
M. Janek,
J. -T. Karachuk,
T. Kawabata,
A. N. Khrenov, [......],
S. Rangelov,
S. G. Reznikov,
S. Sakaguchi,
H. Sakai,
Y. Sasamoto,
K. Sekiguchi,
K. Suda,
I. Turzo,
T. A. Vasiliev,
T. Wakui
[show abstract]
[hide abstract]
ABSTRACT: A new high-energy beam polarimeter is proposed for Nuclotron, which uses the Internal Target Station (ITS). This polarimeter
based on a measurement of asymmetry for the d–p elastic scattering will allow one to measure simultaneously both vector and tensor components of deuteron beam polarization.
For this purpose an analyzing powers measurement for the d–p elastic scattering at energies T
d = 0.88–2 GeV is proposed. The precise measurements of the deuteron analyzing powers over the energy range T
d = 300–2000 MeV can give an irreplaceable clue to the study of the spin dependence of three nucleon forces.
Physics of Particles and Nuclei Letters 09/2006; 3(5):305-311.
-
M. Kh. Anikina,
Yu. S. Anisimov,
A. S. Artemov,
S. V. Afanasev,
D. K. Dryablov,
V. I. Ivanov,
V. A. Krasnov,
S. N. Kuznetsov, A. N. Livanov,
A I Malakhov, [......],
V. B. Belyaev,
N. V. Shevchenko,
V. Yu. Grishina,
A B Kurepin,
L. A. Kondratyuk,
L. M. Lazarev,
A. V. Kobushkin,
S. Gmutsa,
M. Morhac,
S. Wycech
[show abstract]
[hide abstract]
ABSTRACT: An approved experiment at the internal proton beam of the JINR nuclotron on a search for eta-mesic nuclei in the reaction pA --> np + eta(A-1) --> np + pi-p + X is briefly presented.
01/2005;
