Mon·Oct 22, 2018Monday·October 22, 2018

1. 01*

   Status of the vertex detector program of the CBM experiment at FAIR

   Philipp Klaus · Michal Koziel🇩🇪 · Ole Artz · Norbert Bialas · Michael Deveaux🇩🇪 · Ingo Fröhlich🇩🇪 · Jan Michel🇩🇪 · Christian Müntz🇩🇪 · Roland Weirich · Joachim Stroth🇩🇪

   The Compressed Baryonic Matter Experiment (CBM) is one of the core experiments of the future FAIR facility (Darmstadt/Germany). The fixed-target experiment will explore the phase diagram of strongly interacting matter in the regime of high net baryon densities with numerous rare probes. The Micro Vertex Detector (MVD) will determine the secondary decay vertex of open charm particles with $\sim 50\mu \mathrm{m}$ precision, contribute to the background rejection in dielectron spectroscopy, and help to reconstruct neutral decay products of strange particles by means of missing mass identification. The MVD comprises four stations with 0.3 and $0.5\%x/X_0$, which are placed between $5$ and $20\mathrm{cm}$ downstream the target and inside vacuum. It will host highly-granular, next-generation Monolithic Active Pixel Sensors, with a spatial precision of $5\mu \mathrm{m}$, a time resolution of $5\mu \mathrm{s}$, and a peak rate capability of $\sim 700kHz/m{\mathrm{m}}^2$. Moreover, a tolerance to $3\cdot 10^{13}{\mathrm{n}}_{\mathrm{eq}}/c{\mathrm{m}}^2$ and $\gtrsim 3\mathrm{Mrad}$ are required. In this document, we summarize the status of sensor development, station prototyping, and the detector slow control.

   ↳ physics.ins-detnucl-exNucl.Instrum.Meth.A(2019)·4 citations

* Reconstructed cohort: no mailing for this day survives in the archive. Papers are grouped by their submission times and arXiv's announcement cut-off, assuming announcement without delay; positions follow identifier order. Validated at ~91% exact-day agreement against the archived era.