Electromagnetic and Hadron Calorimeters in the MIPP Experiment

TL;DR

This paper describes the design, calibration, and performance evaluation of electromagnetic and hadron calorimeters used in the MIPP experiment at Fermilab, focusing on their ability to measure forward neutrons and photons across various beam energies.

Contribution

It introduces the specific calorimeter setup and calibration procedures used in the MIPP experiment, providing detailed performance metrics and validation results.

Findings

Electromagnetic calorimeter resolution: 0.27/√E

Hadron calorimeter resolution: 0.554/√E with 2.6% constant term

Calorimeters effectively measured neutron and photon production

Abstract

The purpose of the MIPP experiment is to study the inclusive production of photons, pions, kaons and nucleons in pi, K and p interactions on various targets using beams from the Main Injector at Fermilab. The function of the calorimeters is to measure the production of forward-going neutrons and photons. The electromagnetic calorimeter consist of 10 lead plates interspersed with proportional chambers. It was followed by the hadron calorimeter with 64 steel plates interspersed with scintillator. The data presented were collected with a variety of targets and beam momenta from 5 GeV/c to 120 GeV/c. The energy calibration of both calorimeters with electrons, pions, kaons, and protons is discussed. The resolution for electrons was found to be 0.27/sqrt(E), and for hadrons the resolution was 0.554/sqrt(E) with a constant term of 2.6%. The performance of the calorimeters was tested on a neutron sample.