Simulations in the Analysis of Experimental Data Measured by BM@N Drift Chambers

Ján Fedorišin,Gh Adam,J Buša,D Podgainy,M Hnatič

doi:10.1051/epjconf/201817304005

Ján Fedorišin, Gh Adam + Show 3 more

Open Access

https://doi.org/10.1051/epjconf/201817304005

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Abstract

The drift chambers (DCH’s) are an important part of the tracking system of the BM@N experiment designed to study the production of baryonic matter at the Nuclotron energies. The method of particle hit and track reconstruction in the drift chambers has been already proposed and tested on the BM@N deuteron beam data. In this study the DCH’s are first locally and globally aligned, and subsequently the consistency of the track reconstruction chain is tested by two methods. The first one is based on the backward extrapolation of the DCH reconstructed deuteron beam to a position where its deflection in the BM@N magnetic field begins. The second method reconstructs the deuteron beam momentum through its deflection angle. Both methods confirm correctness of the track reconstruction algorithm.

Highlights

The BM@N (Baryonic Matter at Nuclotron) [1, 2] experiment is designed to study the strange matter production in collisions of heavy nuclei
The drift chambers [3] constitute an important part of the BM@N tracking system
Each DCH consists of four segments measuring respectively y, x, u, v track coordinates where u and v stand for the x coordinate rotated by angles ±45◦ around the z axis

Summary

Introduction

The BM@N (Baryonic Matter at Nuclotron) [1, 2] experiment is designed to study the strange matter production in collisions of heavy nuclei. BM@N is a fixed target experiment using heavy-ion beams extracted from JINR Nuclotron with the beam energies ranging from 1 to 6 AGeV. Each DCH consists of four segments measuring respectively y, x, u, v track coordinates where u and v stand for the x coordinate rotated by angles ±45◦ around the z axis. These coordinates are used to produce charged particle tracks passing through all sixteen planes of both the drift chambers. The correction procedures are tuned up on pure beam data where it is less complicated due to low multiplicities of secondary particles

The method consistency checks

Summary