Amu project - a observar muoes

Introduction
Project status (20 June 2014)
assembling photos (June 2014)
First tests (20 June 2014)
1st module assembled
scintillator with the visible grooves for fibers; gluing fibers
waiting for fiber/scintillator gluing (24hr)
wrapping the scintillator with Tyvek (diffusive layers)
parts
Working documents
Experiment design
optical photons readout: wls fibers
General Doc Links
References
software

Introduction

This project intends to design, build and test a portable cosmic ray muon detector for muon flux measurements. Such measurements should show that the muon fluxes depend on the zenith angle, on air pressure and on muon absorption prior to its detection. Additionally, the muon decay time could also be measured with such a scintilator setup.

The detector design is not yet fixed but inspired by other projects (CosMO project is one of them) could be made of a set of three small scintillators (20*25 cm) whose light could be colected by optical fibers WLS and photons detected by multi-pixel photon counters (MPPC). Other possibility would be to have a simple light colector (aluminium foil at the end of the scintillator carrying the light to the MPPC.

In order to optimize the design of the single scintillator element, its simulation shall be made either using the LRCsim package developed within Lab of Cosmic Rays or the CERN Geant4 package.

Finally, the test of the scintillator element is crucial to establish the signal threshold at which it will be operated. The larger it will be the signal and therefore the working signal threshold, the less important it will be the dark counts noise. For instance, the dark counts rate ranges from 10^2 to 10^4 /sec for 1.5 pe threshold, depending on the applied voltage.

Project status (20 June 2014)

assembling photos (June 2014)

First tests (20 June 2014)

1st module assembled

scintillator with the visible grooves for fibers; gluing fibers

waiting for fiber/scintillator gluing (24hr)

wrapping the scintillator with Tyvek (diffusive layers)

parts

Working documents

Experiment design

optical photons readout: wls fibers

The WLS fibers being used are the ones from Kuraray that were also used in the Atlas experiment (green fibers): Y-11(200) Characteristics:

General Doc Links

References

software