# The 2nd international conference on particle physics and astrophysics

10-14 October 2016
Milan Hotel
Europe/Moscow timezone

## Comparison of hadron shower data in the PAMELA experiment with Geant 4 simulations

11 Oct 2016, 14:30
15m
Vivaldi-Boccerini (Milan Hotel)

### Vivaldi-Boccerini

#### Milan Hotel

Shipilovskaya Street, 28A, Moscow, Russia, 115563
Plenary/section talk Cosmic rays

### Speaker

Mr. Vladislav Alekseev (P. G. Demidov Yaroslavl State University)

### Description

The sampling imaging electromagnetic calorimeter of $\approx 16.3$ radiation lengths and $\approx 0.6$ nuclear interaction length designed and constructed by the PAMELA collaboration as a part of the large magnetic spectrometer PAMELA. Calorimeter consists of 44 single-sided silicon sensor planes interleaved with 22 plates of tungsten absorber (thickness of each tungsten layer 0.26 cm). Silicon planes are composed of a $3\times3$ matrix of silicon detectors, each segmented into 32 read-out strips with a pitch of 2.4 mm. The orientation of the strips of two consecutive layers is orthogonal and therefore provides two-dimensional spatial information. Due to the high granularity, the development of hadronic showers can be study with a good precision. In this work a Monte Carlo simulations (based on Geant4) performed using different available models, and including detector and physics effects, compared with the experimental data obtained on the near Earth orbit. The response of the PAMELA calorimeter to hadronic showers investigated including shower radius, longitudinal and transverse shower profiles etc.

### Primary authors

Andrey Mayorov (National Research Nuclear University MEPhI) Ms. Olga Dunaeva (P. G. Demidov Yaroslavl State University) Mr. Vladislav Alekseev (P. G. Demidov Yaroslavl State University)

### Presentation Materials

 Slides
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