ICRC2015

July 29, 2015 to August 6, 2015
World Forum
Europe/Amsterdam timezone

Predicted CALET Measurements of Heavy and Ultra-Heavy Cosmic Ray Nuclei

Jul 30, 2015, 3:30 PM
1h
Amazon Foyer (World Forum)

Amazon Foyer

World Forum

Churchillplein 10 2517 JW Den Haag The Netherlands
Board: 161
Poster contribution CR-IN

Speaker

Dr Brian Flint Rauch (NASA-Natl. Aeronaut. & Space Admin. (US))

Description

The CALorimetric Electron Telescope (CALET) is a Japanese-Italian-US astroparticle observatory expected to be installed on the ISS in 2015. The main calorimeter (CAL) on CALET is comprised from top to bottom of a charge detector (CHD) with two crossed layers of scintillator paddles, an imaging calorimeter (IMC) with planes of scintillating fibers interleaved with tungsten sheets, and a total absorption calorimeter (TASC) made of lead tungstate logs. The main science objectives of CAL are to measure the combined cosmic ray electron and positron spectrum to 20 TeV, gamma rays to 10 TeV, and nuclei $1 \leq Z \leq 40$ to 1,000 TeV. In this paper we present the expected numbers and energy spectra of heavy ($26 \le Z < 30$) and ultra-heavy (UH) ($30 \le Z \le 40$) Cosmic Ray (CR) nuclei that CAL will measure in a planned 5 year mission in the full detector geometry accounting for geomagnetic screening and interactions in the CHD. We will also present the numbers of UH CR nuclei that it will measure using the expanded acceptance permitted utilizing the earth’s geomagnetic field to screen for events above $\sim 600$ MeV/nucleon. Above this threshold the UH charges can be resolved using the CHD with a trajectory correction from the top half of the IMC without the need for energy measurement in the TASC.
Registration number following "ICRC2015-I/" 677 CALET

Primary author

Dr Brian Flint Rauch (NASA-Natl. Aeronaut. & Space Admin. (US))