scholarly journals Dynamic aperture evaluation of the proposed lattices for the RHIC 2009 polarized proton run

2009 ◽  
Author(s):  
Luo Y. ◽  
M. Bai ◽  
J. Beebe-Wang ◽  
W. Fischer ◽  
C. Montag ◽  
...  
Keyword(s):  
Polarized Proton ◽  
Dynamic Aperture

scholarly journals Dynamic Aperture Calculations for the 2012 RHIC 100 Gev Polarized Proton Run

2012 ◽  
Author(s):  
Luo Y. ◽  
W. Fischer ◽  
X. Gu ◽  
S. Tepikian ◽  
V. Schoefer
Keyword(s):  
Polarized Proton ◽  
Dynamic Aperture

scholarly journals Dynamic Aperture evaluation at the current working point for RHIC polarized proton run

2007 ◽  
Author(s):  
Luo Y. ◽  
M. Bai ◽  
J. Beebe-Wang ◽  
R. Calaga ◽  
W. Fischer ◽  
...  
Keyword(s):  
Polarized Proton ◽  
Dynamic Aperture ◽  
Working Point

scholarly journals Dynamic aperture evaluation of the proposed lattices for the RHIC 2009 polarized proton run

2009 ◽  
Author(s):  
Y. Luo ◽  
M. Bai ◽  
J. Beebe-Wang ◽  
W. Fischer ◽  
C. Montag ◽  
...  
Keyword(s):  
Polarized Proton ◽  
Dynamic Aperture

scholarly journals Dynamic aperture calculations for the 2012 RHIC 100 GeV polarized proton run

2012 ◽  
Author(s):  
Luo Y. ◽  
W. Fischer ◽  
X. Gu ◽  
S. Tepikian ◽  
V. Schoefer
Keyword(s):  
Polarized Proton ◽  
Dynamic Aperture

scholarly journals Determining the helicity structure of the nucleon at the Electron Ion Collider in China

2021 ◽  
Vol 2021 (8) ◽  
Author(s):  
Daniele Paolo Anderle ◽  
Tie-Jiun Hou ◽  
Hongxi Xing ◽  
Mengshi Yan ◽  
C.-P. Yuan ◽  
...  
Keyword(s):  
Electron Beam ◽  
Inelastic Scattering ◽  
Scattering Data ◽  
Leading Order ◽  
Specific Topic ◽  
Good Separation ◽  
Effective Electron ◽  
Deep Inelastic Scattering Data ◽  
Polarized Proton ◽  
Helicity Structure

Abstract Understanding how sea quarks behave inside a nucleon is one of the most important physics goals of the proposed Electron-Ion Collider in China (EicC), which is designed to have a 3.5 GeV polarized electron beam (80% polarization) colliding with a 20 GeV polarized proton beam (70% polarization) at instantaneous luminosity of 2 × 1033cm−2s−1. A specific topic at EicC is to understand the polarization of individual quarks inside a longitudinally polarized nucleon. The potential of various future EicC data, including the inclusive and semi-inclusive deep inelastic scattering data from both doubly polarized electron-proton and electron-3He collisions, to reduce the uncertainties of parton helicity distributions is explored at the next-to-leading order in QCD, using the Error PDF Updating Method Package (ePump) which is based on the Hessian profiling method. We show that the semi-inclusive data are well able to provide good separation between flavour distributions, and to constrain their uncertainties in the x > 0.005 region, especially when electron-3He collisions, acting as effective electron-neutron collisions, are taken into account. To enable this study, we have generated a Hessian representation of the DSSV14 set of PDF replicas, named DSSV14H PDFs.

scholarly journals The 200 nA Variable energy polarized proton beam at triumf

1978 ◽  
Author(s):  
J. L. Beveridge ◽  
G. Dutto ◽  
P. W. Schmor ◽  
G. Roy
Keyword(s):  
Proton Beam ◽  
Polarized Proton ◽  
Variable Energy

scholarly journals Interpreting data from polarized proton beams

1974 ◽  
Vol 78 (1) ◽  
pp. 110-128 ◽  
Author(s):  
G.L. Kane ◽  
U.P. Sukhatme
Keyword(s):  
Proton Beams ◽  
Polarized Proton

Performance of the far-IR beamline of the 6 MeV tabletop synchrotron light source

2009 ◽  
Vol 16 (2) ◽  
pp. 299-306 ◽  
Author(s):  
Md. Monirul Haque ◽  
Hironari Yamada ◽  
Ahsa Moon ◽  
Mami Yamada
Keyword(s):  
Light Source ◽  
Optical System ◽  
Far Infrared ◽  
Beam Current ◽  
Small Ring ◽  
Thermal Source ◽  
Simulation Code ◽  
Dynamic Aperture ◽  
Electron Orbit ◽  
Synchrotron Light

The performance of the far-infrared (FIR) beamline of the 6 MeV tabletop synchrotron light source MIRRORCLE-6FIR dedicated to far-infrared spectroscopy is presented. MIRRORCLE-6FIR is equipped with a perfectly circular optical system (PhSR) placed around the 1 m-long circumference electron orbit. To illustrate the facility of this light source, the FIR output as well as its spectra were measured. The optimum optical system was designed by using the ray-tracing simulation code ZEMAX. The measured FIR intensity with the PhSR in place is about five times higher than that without the PhSR, which is in good agreement with the simulation results. The MIRRORCLE-6FIR spectral flux is compared with a standard thermal source and is found to be 1000 times greater than that from a typical thermal source at ∼15 cm−1. It is also observed that the MIRRORCLE-6FIR radiation has a highly coherent nature. The broadband infrared allows the facility to reach the spectral range from 10 cm−1 to 100 cm−1. MIRRORCLE-6FIR, owing to a large beam current, the PhSR mirror system, a large dynamic aperture and small ring energy, can deliver a bright flux of photons in the FIR/THz region useful for broadband spectroscopy.

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