scholarly journals NICA Facility in Polarized Proton and Deuteron Mode

2016 ◽  
Vol 40 ◽  
pp. 1660096
Author(s):  
A. D. Kovalenko ◽  
A. V. Butenko ◽  
V. D. Kekelidze ◽  
V. A. Mikhaylov ◽  
A. M. Kondratenko ◽  
...  
Keyword(s):  
Weak Field ◽  
Beam Momentum ◽  
Fixed Target ◽  
Momentum Range ◽  
Polarized Beams ◽  
Polarization Control ◽  
Polarized Protons ◽  
Polarized Proton ◽  
Nica Project ◽  
And Control

NICA project at JINR is aimed at the experiments with polarized protons and deuterons at both as fixed target and colliding mode over beam momentum range from 2 to 13.5[Formula: see text]GeV/c. Polarized beams are injected into collider from the Nuclotron-superconducting synchrotron. Dynamic solenoid “Siberian snakes” are proposed to prevent resonance depolarization of proton beam during acceleration in the Nuclotron up to momentum of 6 GeV/c and further in the collider up to the maximum momentum after storage and stochastic cooling of necessary number of particles in each ring. By means of pair of the Snakes placed in the opposite collider straight sections “spin transparency” mode is provided. Stabilization and control of the polarization is reached due to “weak field” solenoids integrated in the lattice. The proposed scheme of the polarization control is universal and can be used for different ion spices (p, d, t, He3…).

scholarly journals Siberian Snakes, Figure-8 and Spin Transparency Techniques for High Precision Experiments with Polarized Hadron Beams in Colliders

Symmetry ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 398
Author(s):  
Yaroslav S. Derbenev ◽  
Yury N. Filatov ◽  
Anatoliy M. Kondratenko ◽  
Mikhail A. Kondratenko ◽  
Vasiliy S. Morozov
Keyword(s):  
High Precision ◽  
High Energy Physics ◽  
High Efficiency ◽  
High Energy ◽  
Polarized Beams ◽  
Polarization Control ◽  
Spin Polarized ◽  
High Flexibility ◽  
Spin Flips ◽  
Energy Physics

We present a review of the possibilities to conduct experiments of high efficiency in the nuclear and high energy physics with spin-polarized beams in a collider complex, configuration of which includes Siberian snakes or figure-8 collider ring. Special attention is given to the recently elicited advantageous possibility to conduct high precision experiments in a regime of the spin transparency (ST) when the design global spin tune is close to zero. In this regime, the polarization control is realized by use of spin navigators (SN), which are compact special insertions of magnets dedicated to a high flexibility spin manipulation including frequent spin flips.

Science and status of the Electron Ion Collider

2017 ◽  
Vol 26 (01n02) ◽  
pp. 1740007 ◽  
Author(s):  
A. Deshpande
Keyword(s):  
High Energy ◽  
High Energy Electron ◽  
High Luminosity ◽  
Polarized Electrons ◽  
Polarized Beams ◽  
Science Advisory ◽  
Polarized Proton ◽  
The Us ◽  
Current Guidance ◽  
Science Advisory Committee

The US Nuclear Science Advisory Committee (NSAC) recently recommended the construction of a high-luminosity, high-energy Electron Ion Collider (EIC), with polarized beams capable of colliding polarized electrons with polarized proton and light ion beams, and with any nucleus. The [Formula: see text] range between 40[Formula: see text]GeV and 140[Formula: see text]GeV, and luminosity range from [Formula: see text] were recommended. It is anticipated that under the current guidance from the DOE, the collider could become operational in the second half of the 2020’s. This paper summarizes its science and the scope of this over all project.

scholarly journals Measurements of the antiproton-proton annihilation cross-section in the beam momentum range between 180 and 600 MeV/c

1990 ◽  
Vol 335 (2) ◽  
pp. 217-229 ◽  
Author(s):  
W. Br�ckner ◽  
B. Cujec ◽  
H. D�bbeling ◽  
K. Dworschak ◽  
F. G�ttner ◽  
...  
Keyword(s):  
Cross Section ◽  
Beam Momentum ◽  
Annihilation Cross Section ◽  
Momentum Range

Scattering ofπ−Mesons in the Momentum Range 0.643-2.14 GeV/cfrom a Polarized Proton Target

1969 ◽  
Vol 184 (5) ◽  
pp. 1453-1461 ◽  
Author(s):  
C. R. Cox ◽  
P. J. Duke ◽  
K. S. Heard ◽  
R. E. Hill ◽  
W. R. Holley ◽  
...  
Keyword(s):  
Proton Target ◽  
Momentum Range ◽  
Polarized Proton ◽  
Polarized Proton Target

scholarly journals Transverse Beam Emittance Measurement and Control

2003 ◽  
pp. 99-131 ◽  
Author(s):  
Michiko G. Minty ◽  
Frank Zimmermann
Keyword(s):  
Horizontal Plane ◽  
Vertical Plane ◽  
Coupled System ◽  
Beam Momentum ◽  
Transverse Beam ◽  
Beam Emittance ◽  
Dimensional Phase Space ◽  
And Control ◽  
Measurement And Control ◽  
Emittance Measurement

AbstractThe beam emittance ∈xyz represents the volume of the beam occupied in the six dimensional phase space (x, x′, y, y′, φ, δ), where x and y are the transverse positions, x′ and y′ are the transverse angles, φ is the time-like variable representing the relative phase of the beam, and δ is the relative beam momentum error. Using the notation of the beam matrix Σbeam introduced in Chap. 1, the 6-dimensional emittance is $${\varepsilon _{xyz}} = \det \Sigma _{beam}^{xyz}.$$ Considering now only the horizontal plane, the corresponding 2-dimensional horizontal emittance is obtained from $${\varepsilon _x} = \sqrt {\left\langle {{x^2}} \right\rangle \left\langle {{{x'}^2}} \right\rangle- {{\left\langle {xx'} \right\rangle }^2}} ,$$ where the first moments have been subtracted, and the average (〈…〉) is taken over the distribution function of the beam; recall also (1.27–1.29). An analoguous expression holds for the vertical plane. For a coupled system, the general form of (4.1) must be taken.

Scattering ofπ−Mesons in the Momentum Range 875-1579 MeV/cfrom a Polarized Proton Target

1968 ◽  
Vol 166 (5) ◽  
pp. 1448-1457 ◽  
Author(s):  
P. J. Duke ◽  
D. P. Jones ◽  
M. A. R. Kemp ◽  
P. G. Murphy ◽  
J. J. Thresher ◽  
...  
Keyword(s):  
Proton Target ◽  
Momentum Range ◽  
Polarized Proton ◽  
Polarized Proton Target
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