The low level RT control system of PLS-II storage ring at 400 mA 3.0 GeV

TL;DR

This paper details the upgrade and testing of the RF control system for PLS-II storage ring, achieving stable 400mA beam current with precise phase and amplitude control.

Contribution

It presents the design, configuration, and test results of the upgraded RF system for PLS-II, including superconducting cavities and klystron amplifiers.

Findings

Successful commissioning of superconducting RF cavities

Stable beam operation at 400mA current

RF amplitude and phase stability within specified tolerances

Abstract

The RF system for the Pohang Light Source (PLS) storage ring was greatly upgraded for PLS-II project of 400mA, 3.0GeV from 200mA, 2.5GeV. Three superconducting(SC) RF cavities with each 300kW maximum klystron amplifier were commissioned with electron beam in way of one by one during the last 3 years for beam current of 400mA to until March 2014. The RF system is designed to provide stable beam through precise RF phase and amplitude requirements to be less than 0.3% in amplitude and 0.3{\deg} in phase deviations. This paper describes the RF system configuration, design details and test results.