Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration)
The polarized targets are developed by Russia, France and Ukraine cooperation. We were equipped existing facility with the new holding coils magnet field to rotate the vector polarization as required by MPT project. The new results on spin- dependent total cross section difference DsL(np) were obtai...
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| Veröffentlicht in: | Вопросы атомной науки и техники |
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| Datum: | 2001 |
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Національний науковий центр «Харківський фізико-технічний інститут» НАН України
2001
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| Назва журналу: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Zitieren: | Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) / A.A. Belyaev, A.P. Dzyubak, A.A. Lukhanin, I.M. Karnaukhov, P.V. Sorokin // Вопросы атомной науки и техники. — 2001. — № 1. — С. 10. — Бібліогр.: 3 назв. — англ. |
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Digital Library of Periodicals of National Academy of Sciences of Ukraine| _version_ | 1859721698426748928 |
|---|---|
| author | Belyaev, A.A. Dzyubak, A.P. Lukhanin, A.A. Karnaukhov, I.M. Sorokin, P.V. |
| author_facet | Belyaev, A.A. Dzyubak, A.P. Lukhanin, A.A. Karnaukhov, I.M. Sorokin, P.V. |
| citation_txt | Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) / A.A. Belyaev, A.P. Dzyubak, A.A. Lukhanin, I.M. Karnaukhov, P.V. Sorokin // Вопросы атомной науки и техники. — 2001. — № 1. — С. 10. — Бібліогр.: 3 назв. — англ. |
| collection | DSpace DC |
| container_title | Вопросы атомной науки и техники |
| description | The polarized targets are developed by Russia, France and Ukraine cooperation. We were equipped existing facility with the new holding coils magnet field to rotate the vector polarization as required by MPT project. The new results on spin- dependent total cross section difference DsL(np) were obtained by joint efforts.
|
| first_indexed | 2025-12-01T10:33:55Z |
| format | Article |
| fulltext |
INVESTIGATION OF POLARIZED NUCLEON INTERACTION
(JINR – FRANCE – UKRAINE INTERNATIONAL COLLABORATION)
A.A. Belyaev, A.P. Dzyubak, A.A. Lukhanin, I.M. Karnaukhov, P.V. Sorokin
National Science Center “Kharkov Institute of Physics and Technology”, Kharkov, Ukraine
The polarized targets are developed by Russia, France and Ukraine cooperation. We were equipped existing
facility with the new holding coils magnet field to rotate the vector polarization as required by MPT project. The
new results on spin- dependent total cross section difference ∆σL(np) were obtained by joint efforts.
PACS: 13.75Gx.
The application of the polarized target in
experiments to study hadron-hadron interactions
presents the enormous interest with standpoint of
account of influence their spin dependency. With this
purpose in JINR (Dubna) in frame of collaboration
France-Russia-Ukraine the experiment was proposed to
measure the asymmetry of the total cross on polarized
protons.
In realization of this project for the first time in world
the "Movable Polarized Target" (МРТ) is created [1].
The particularity of this complex is that the polarized
target is performed in mobile variant. It means one can
be transported without stripping and installed on any
accelerator. МРТ was created of all participants of
collaboration.
A contribution of NSC KIPT to the МРТ was creation
of the high frequency device to pump the proton
polarization and the special magnet to change the spin
orientation in different directions to the reaction plane.
At the NSC KIPT the superconductivity magnet
system was
designed,
the coils were wound by superconducting cable and the
critical parameters at transitions to the normal state were
measured. An electrical support system and system to
protect the superconductivity magnet at returning into
the normal state was made and tested. To measure the
level of liquid helium the superconductivity sensors
were designed.
Superconductivity magnet system allows getting the
magnetic induction from 0.5 Т up to 2.5 Т in “warm”
volumes from 30 сm3 to 6000 сm3 at the field
homogeneity ±1x10-2 and 20% accordingly.
NSC KIPT takes part in the installation, supporting of
the MPT and it’s using in the experiments. At JINR
synchrophasotron (Dubna) the joint investigations of the
asymmetry differences of cross-sections in the
interaction of quasi-monochromatic polarized neutrons
with polarized protons carry out by Saclay (France),
JINR (Dubna), SPINF, INF (Russia) and NSC KIPT
(Ukraine).
New results for the np spin- dependent total cross
section difference ∆σL(np) at neutron beam with kinetic
energies of 1.19, 1.59, 1.79, 2.20, 2.49 and 3.65 GeV
are presented. Measurements of the ∆σL(np) energy
dependence were carried at the Synchrophasotron of the
Laboratory of High Energies of the JINR. The values of
∆σL were measured as difference between the np total
cross sections for parallel and antiparallel beam and
target polarizations, both oriented along the beam
momentum.
The obtained −∆σL(np) values are presented in the
figure. The errors are quadratic sums of both the
statistical and systematic uncertainties.
The result from refs. [2,3] together with the existing
∆σL(np) data, obtained with free polarized neutrons at
lower energies, are also shown in Fig.1. One can see,
that the new results are smoothly connected with the
lower energy data and confirm a fast decrease to zero
within a 1.2-2.0 GeV energy region, observed
previously [3].
A fast decrease of ∆σL(np) with increasing energy
above 1.1 GeV, as it was first seen from the previous
data, was confirmed. The new results are also compared
with model predictions and with the phase shift analysis
fits. The ∆σL quantities for isosinglet state I=0, deduced
from the measured values ∆σL(np) and known ∆σL(pp)
data, are given.
Energy dependence of the −∆σL(np) observable
obtained with free neutron polarized beams.
REFERENCES
1. N.A. Bazhanov et al. A movable polarized target for
high energy spin physics experiments // NIM, 1996,
v. A372, p. 349-351.
2. B.P. Adjashevich et al. Measurements of the total
cross section differences ∆σL in np transmission at
1.19, 2.49 and 3.65 Gev // Z. f. Phys. 1996, v. C71,
p. 65-74.
3. V.I. Sharov et al. Measurements of the np total cross
section differences for pure helicity states at 1.20,
10 PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY. 2001, № 1.
Series: Nuclear Physics Investigations (37), p. 10.
2.50 and 3.66 Gev // JINR Rapid Communications
1996, №3(77), p. 13-22.
INVESTIGATION OF POLARIZED NUCLEON INTERACTION
(JINR – FRANCE – UKRAINE INTERNATIONAL COLLABORATION)
A.A. Belyaev, A.P. Dzyubak, A.A. Lukhanin, I.M. Karnaukhov, P.V. Sorokin
National Science Center “Kharkov Institute of Physics and Technology”, Kharkov, Ukraine
REFERENCES
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| id | nasplib_isofts_kiev_ua-123456789-78435 |
| institution | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| issn | 1562-6016 |
| language | English |
| last_indexed | 2025-12-01T10:33:55Z |
| publishDate | 2001 |
| publisher | Національний науковий центр «Харківський фізико-технічний інститут» НАН України |
| record_format | dspace |
| spelling | Belyaev, A.A. Dzyubak, A.P. Lukhanin, A.A. Karnaukhov, I.M. Sorokin, P.V. 2015-03-17T11:02:57Z 2015-03-17T11:02:57Z 2001 Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) / A.A. Belyaev, A.P. Dzyubak, A.A. Lukhanin, I.M. Karnaukhov, P.V. Sorokin // Вопросы атомной науки и техники. — 2001. — № 1. — С. 10. — Бібліогр.: 3 назв. — англ. 1562-6016 PACS: 13.75Gx. https://nasplib.isofts.kiev.ua/handle/123456789/78435 The polarized targets are developed by Russia, France and Ukraine cooperation. We were equipped existing facility with the new holding coils magnet field to rotate the vector polarization as required by MPT project. The new results on spin- dependent total cross section difference DsL(np) were obtained by joint efforts. en Національний науковий центр «Харківський фізико-технічний інститут» НАН України Вопросы атомной науки и техники IHEPNF NSC KIPT in the last decade Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) Исследование адрон – адронных взаимодействий (Международная коллаборация с участием ОИЯИ, Франции, Украины) Article published earlier |
| spellingShingle | Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) Belyaev, A.A. Dzyubak, A.P. Lukhanin, A.A. Karnaukhov, I.M. Sorokin, P.V. IHEPNF NSC KIPT in the last decade |
| title | Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) |
| title_alt | Исследование адрон – адронных взаимодействий (Международная коллаборация с участием ОИЯИ, Франции, Украины) |
| title_full | Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) |
| title_fullStr | Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) |
| title_full_unstemmed | Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) |
| title_short | Investigation of polarized nucleon interaction (JINR – France – Ukraine International Collaboration) |
| title_sort | investigation of polarized nucleon interaction (jinr – france – ukraine international collaboration) |
| topic | IHEPNF NSC KIPT in the last decade |
| topic_facet | IHEPNF NSC KIPT in the last decade |
| url | https://nasplib.isofts.kiev.ua/handle/123456789/78435 |
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