New forward hadron calorimeter for centrality and reaction plane determination at BM@N heavy ion experiments

F Guber,N Karpushkin,A Ivashkin,D Finogeev,M Golubeva,A Senger,S Morozov,D Borisenko,S Bondarenko,A Malakhov,V Burov

doi:10.1051/epjconf/201920407007

Abstract

It is proposed to replace existing Zero Degree Calorimeter of the BM@N setup at the Nuclotron (JINR) by a new forward hadron calorimeter for the measurement of the collision centrality and reaction plane orientation in heavy ions experiments. This calorimeter with transverse and longitudinal segmentation will be assembled from modules presently constructed for FHCal MPD and PSD CBM. The proposed design of the new calorimeter, simulation results for centrality and reaction plane determination by the new calorimeter, as well as radiation doses in the calorimeter simulated by FLUKA are discussed. The performance of hadron calorimeter supermodule studied at CERN is shown.

Highlights

The BM@N experiment has a unique possibility to investigate hot and dense nuclear matter in heavy ion collisions at the Nuclotron beam energies between 2 and 6 AGeV [1]
The physics program of fixed target BM@N experiments includes the studies of strangeness production in heavy ion collisions, multi-strange hyperons production, the study of the hyper-nuclei production.The first results with the relativistic deuteron [3] and carbon [4] beams and recent experiments with Ar and Kr beams demonstrated the feasibility of these studies with light nuclei
The impact parameter is not a measurable quantity, in the BM@N experiment Zero Degree Calorimeter is used to measure the centrality in light and medium nucleus-nucleus collisions

Summary

Introduction

The BM@N experiment has a unique possibility to investigate hot and dense nuclear matter in heavy ion collisions at the Nuclotron beam energies between 2 and 6 AGeV [1]. It has been shown by FLUKA simulations, that the radiation doses from ionizing and non-ionizing particles in central part of the present ZDC expected for gold beam at energy 4 AGeV and beam rate 2x106 ions per second will be too high (see Fig. 5) and, the light output in central modules will be decreased and ZDC performance will be worse.

Results

Conclusion