scholarly journals The eRHIC spin rotator and the beam optics of the 400 MeV transfer line to RCS

2019 ◽  
Vol 34 (36) ◽  
pp. 1942014
Author(s):  
Nicholaos Tsoupas ◽  
Michael Blaskiewicz ◽  
Henry Lovelace ◽  
François Méot ◽  
Christoph Montag ◽  
...  
Keyword(s):  
Electron Accelerator ◽  
Longitudinal Direction ◽  
Heavy Ion ◽  
Beam Optics ◽  
Relativistic Heavy Ion Collider ◽  
Injection Point ◽  
Polarized Electrons ◽  
Electron Bunches ◽  
Transfer Line ◽  
Spin Rotator

The 400 MeV LINAC1 of the proposed eRHIC collider1 is the first acceleration stage of the 18 GeV electron accelerator. The second acceleration stage of the electron accelerator is the Rapid Cycling Synchrotron (RCS), which can increase the energy of the electron bunches to 18 GeV and subsequently extract transfer and inject the 18 GeV electron bunches into the 18 GeV electron Storage Ring (SR) to collide with the hadron bunches of the existing (Relativistic Heavy Ion Collider (RHIC)) accelerator. This paper describes the beam optics of the transfer line between the 400 MeV LINAC and the RCS accelerator (LtRCS). The function of the LtRCS line is twofold, first to transfer the electron beam from the exit of the 400 MeV LINAC to the injection point of the RCS1 and second to rotate the stable spin direction of the polarized electrons from the longitudinal direction to the vertical. A detailed description of the constraints to be satisfied by the LtRCS transfer line will be given. A section will also be devoted to discuss the spin rotator2.

scholarly journals Quark Number Susceptibilities and Equation of State in QCD at Finite μB

Proceedings ◽  
2019 ◽  
Vol 13 (1) ◽  
pp. 5
Author(s):  
Saumen Datta ◽  
Rajiv Gavai ◽  
Sourendu Gupta
Keyword(s):  
Equation Of State ◽  
Taylor Series ◽  
Chemical Potential ◽  
Baryon Number ◽  
Heavy Ion ◽  
Relativistic Heavy Ion Collider ◽  
Quark Number ◽  
Monte Carlo Studies ◽  
Essential Input ◽  
Beam Energy Scan

One of the main goals of the cold baryonic matter (CBM) experiment at FAIR is to explore the phases of strongly interacting matter at finite temperature and baryon chemical potential μ B . The equation of state of quantum chromodynamics (QCD) at μ B > 0 is an essential input for the CBM experiment, as well as for the beam energy scan in the Relativistic Heavy Ion Collider(RHIC) experiment. Unfortunately, it is highly nontrivial to calculate the equation of state directly from QCD: numerical Monte Carlo studies on lattice are not useful at finite μ B . Using the method of Taylor expansion in chemical potential, we estimate the equation of state, namely the baryon number density and its contribution to the pressure, for two-flavor QCD at moderate μ B . We also study the quark number susceptibilities. We examine the technicalities associated with summing the Taylor series, and explore a Pade resummation. An examination of the Taylor series can be used to get an estimate of the location of the critical point in μ B , T plane.

scholarly journals The magnet system of the Relativistic Heavy Ion Collider (RHIC)

1996 ◽  
Vol 32 (4) ◽  
pp. 2041-2046 ◽  
Author(s):  
A. Greene ◽  
M. Anerella ◽  
J. Cozzolino ◽  
J. Escallier ◽  
D. Fisher ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Relativistic Heavy Ion Collider ◽  
Magnet System

scholarly journals Results of bent crystal channeling and collimation at the Relativistic Heavy Ion Collider

2006 ◽  
Vol 9 (1) ◽  
Author(s):  
R. P. Fliller ◽  
A. Drees ◽  
D. Gassner ◽  
L. Hammons ◽  
G. McIntyre ◽  
...  
Keyword(s):  
Heavy Ion ◽  
Relativistic Heavy Ion Collider ◽  
Bent Crystal

NSAC recommends a relativistic heavy‐ion collider

Physics Today ◽  
1984 ◽  
Vol 37 (1) ◽  
pp. 20-22
Author(s):  
Bertram M. Schwarzschild
Keyword(s):  
Heavy Ion ◽  
Relativistic Heavy Ion Collider
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