scholarly journals Single photons from relativistic collisions of lead nuclei at energies available at the CERN Super Proton Synchrotron (SPS): A reanalysis

2009 ◽  
Vol 79 (3) ◽  
Author(s):  
Rupa Chatterjee ◽  
Dinesh K. Srivastava ◽  
Sangyong Jeon
Keyword(s):  
Proton Synchrotron ◽  
Single Photons ◽  
Super Proton Synchrotron

scholarly journals The `quasi-mosaic' effect in crystals and its applications in modern physics

2015 ◽  
Vol 48 (4) ◽  
pp. 977-989 ◽  
Author(s):  
Riccardo Camattari ◽  
Vincenzo Guidi ◽  
Valerio Bellucci ◽  
Andrea Mazzolari
Keyword(s):  
Hadron Collider ◽  
Proton Synchrotron ◽  
X Rays ◽  
Super Proton Synchrotron ◽  
Charged Particle Beams ◽  
Modern Physics ◽  
Volume Reflection ◽  
Comprehensive Survey ◽  
Γ Rays ◽  
Crystallographic Planes

`Quasi-mosaicity' is an effect of anisotropy in crystals that permits one to obtain a curvature of internal crystallographic planes that would be flat otherwise. The term `quasi-mosaicity' was introduced by O. Sumbaev in 1957. The concept of `quasi-mosaicity' was then retrieved about ten years ago and was applied to steering of charged-particle beams at the Super Proton Synchrotron at CERN. Beams were deviated by exploiting channeling and volume reflection phenomena in curved crystals that show the `quasi-mosaic' effect. More recently, a crystal of this kind was installed in the Large Hadron Collider at CERN for beam collimation by the UA9 collaboration. Since 2011, another important application involving the `quasi-mosaic' effect has been the focalization of hard X-rays and soft γ-rays. In particular, the possibility of obtaining both high diffraction efficiency and the focalization of a diffracted beam has been proved, which cannot be obtained using traditional diffracting crystals. A comprehensive survey of the physical properties of `quasi-mosaicity' is reported here. Finally, experimental demonstrations for adjustable values of the `quasi-mosaic' curvature are provided.

Measurements of hyperon semileptonic decays at the CERN Super Proton Synchrotron

1982 ◽  
Vol 12 (4) ◽  
pp. 307-321 ◽  
Author(s):  
M. Bourquin ◽  
R. M. Brown ◽  
Y. Chatelus ◽  
J. C. Chollet ◽  
A. Degré ◽  
...  
Keyword(s):  
Semileptonic Decays ◽  
Proton Synchrotron ◽  
Super Proton Synchrotron
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