The XBPF, a new multipurpose scintillating fibre monitor for the measurement of secondary beams at CERN

TL;DR

The paper introduces a versatile, low-cost scintillating fibre monitor developed at CERN for precise secondary beam measurements, demonstrating excellent performance in test beam conditions.

Contribution

A novel multipurpose scintillating fibre monitor with a simple, low-material design suitable for various beam measurement functions at CERN.

Findings

Successful commissioning in CERN test beams

Excellent performance in profile, position, and timing measurements

Versatile functions including momentum spectrometry and particle identification

Abstract

The Beam Instrumentation group at CERN has developed a new scintillating fibre beam monitor for the measurement of secondary particle beams in the CERN Experimental Areas. The monitor has a simple design that stands out for its low material budget, vacuum compatibility, good performance, low cost, and ease of production. By using different read-out techniques the monitor can perform several functions, such as measurement of the profile, position and intensity of the beam, momentum spectrometry, generation of fast trigger signals, and measurement of the time-of-flight for particle identification. The monitor has been successfully commissioned in the recently created test beams of the CERN Neutrino Platform, where it has shown an excellent performance as described in the paper.