Use of a Bent Crystal with a Decreasing Curvature to Increase the Efficiency of the Extraction and Collimation of a Beam in an Accelerator

TL;DR

This paper demonstrates that using a bent crystal with decreasing curvature improves beam extraction and collimation efficiency in accelerators, significantly reducing particle loss and enhancing performance.

Contribution

It introduces a novel bent crystal design with variable curvature that substantially increases extraction efficiency in particle accelerators.

Findings

Extraction efficiency at U-70 increased to 95%

Efficiency at the Large Hadron Collider reached 99.65%

Dechanneled particle fraction was reduced by an order of magnitude

Abstract

It has been shown that the use of a bent crystal with a variable curvature radius makes it possible to reduce the fraction of dechanneled particles by an order of magnitude. This effect enables the strong reduction of the particle density at the edge of a collimator or the partition of a septum upon the multiturn extraction of a beam from a ring accelerator. In particular, the beam extraction efficiency at the U-70 synchrotron and Large Hadron Collider can be increased to 95 and 99.65%, respectively.