Integration Concept of the CBM Micro Vertex Detector

TL;DR

This paper presents the integration concept for the CBM Micro Vertex Detector, detailing material selection, assembly, and quality assurance to meet strict performance and environmental requirements for future high-energy physics experiments.

Contribution

It introduces a comprehensive integration approach for the MVD, addressing material, assembly, and quality control challenges specific to the CBM experiment.

Findings

Material budget achieved within specifications

Assembly procedures optimized for high precision

Quality assessment protocols established

Abstract

The Micro Vertex Detector (MVD) is the most upstream detector of the fixed-target Compressed Baryonic Matter Experiment (CBM) at the future Facility for Antiproton and Ion Research (FAIR). It enables high-precision low-momentum tracking in direct proximity of the target. Reaching the stringent requirements for the MVD, a material budget of~$0.3\,-\,0.5\%\,X_0$ per layer, operating the dedicated CMOS MAPS~(`MIMOSIS') in the target vacuum, the strong magnetic dipole field, and a harsh radiation environment~(5\,Mrad, $7\times10^{13}\,n_{\text{eq}}/\text{cm}^2$ per CBM year), poses an unprecedented integration challenge. In this paper, the integration concept of the detector is be outlined, elaborating on the selection and preparation of materials, assembly procedures, and quality assessment steps in the ongoing preparation of pre-series production and detector commissioning in 2028.