Beam Position Monitor Electronics Upgrade for Fermilab Switchyard

TL;DR

This paper discusses an upgrade to the Fermilab Switchyard's beam position monitor system, enhancing its ability to measure beam position, intensity, and integrated intensity for high-energy proton beams during spill periods.

Contribution

The paper presents a new BPM electronics system with improved sensitivity and accuracy for measuring high-intensity proton beams in the Fermilab Switchyard.

Findings

Enhanced measurement accuracy for beam position and intensity.

Successful operation over a wide range of beam intensities.

Improved signal processing for RF bunched resonant beams.

Abstract

The beam position monitor (BPM) system for Fermilab Switchyard (SY) provides the position, intensity and integrated intensity of the 53.10348 MHz RF bunched resonant extracted beam from the Main Injector over 4 seconds of spill. The total beam intensity varies from 1x10^11 to 1x10^13 protons. The spill is measured by stripline beam postion monitors and resonant circuit. The BPMs have an external resonant circuit tuned to 53.10348 MHz. The corresponding voltage signal out of the BPM has been estimated to be between -110 dBm and -80 dBm.