Collimation of a Circulating Beam in the U_70 Synchrotron by Use of Reflections in Axially - Oriented Crystals

TL;DR

This paper demonstrates a novel beam collimation method in the U_70 synchrotron using axial crystal reflections, achieving high efficiency and reduced beam losses, which improves beam control and reduces muon jets.

Contribution

It introduces and experimentally validates a new collimation technique utilizing axial crystal reflections, enhancing efficiency and reducing beam losses in synchrotron operations.

Findings

Collimation efficiency reached 90% using axial crystal effects.

Beam losses on collimators were reduced several times.

Suppressed muon jets near the steel collimator.

Abstract

The possibilities of the extraction and collimation of a circulating beam by a new method due to the reflection of particles in crystals with axial orientation were experimentally investigated in the Fall-2010 run at the U_70 synchrotron. Such crystals have positive features, because the axial potential is five times larger than the planar potential. It has been shown that the collimation efficiency can reach 90% due to axial effects in the crystal. Losses of the circulating beam on a collimator have been reduced by several times; this makes it possible to suppress the muon jet near the steel collimator of the circulating beam.