Direct focusing error correction with ring-wide TBT beam position data

TL;DR

This paper introduces a novel method for correcting focusing errors in particle accelerators by analyzing turn-by-turn beam position data across the entire ring to optimize quadrupole strengths efficiently.

Contribution

It presents a new collective approach to diagnose and correct focusing errors using comprehensive TBT data, improving speed and accuracy over traditional methods.

Findings

Effective correction of focusing errors demonstrated

Method reduces correction time significantly

Improves beam stability and machine optics accuracy

Abstract

Turn-By-Turn (TBT) betatron oscillation data is a very powerful tool in studying machine optics. Hundreds and thousands of turns of free oscillations are taken in just few tens of milliseconds. With beam covering all positions and angles at every location TBT data can be used to diagnose focusing errors almost instantly. This paper describes a new approach that observes focusing error collectively over all available TBT data to find the optimized quadrupole strength, one location at a time. Example will be shown and other issues will be discussed.