10-16 June 2018
Dalhousie University
America/Halifax timezone
Welcome to the 2018 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2018!

The HELIX Cosmic-ray Experiment (G)*

11 Jun 2018, 14:15
SUB 303 (cap.100) (Dalhousie University)

SUB 303 (cap.100)

Dalhousie University

Oral Competition (Graduate Student) / Compétition orale (Étudiant(e) du 2e ou 3e cycle) Particle Physics / Physique des particules (PPD) M2-3 Particle Physics II (PPD) | Physique des particules II (PPD)


Thomas Rosin


The High-Energy Light-Ion eXperiment (HELIX) is designed to measure the
fluxes of light cosmic-ray nuclei at energies of a few GeV per nucleon.
The primary goal is to study the evolution of the ratio of Be-10
to Be-9 between 0.2 GeV/n and 3 GeV/n. The former is a radioactive 'clock
isotope' while the latter is stable, so the ratio contains information about
how far and through what the cosmic rays have been propagating. Better
knowledge of our local environment within the Galaxy has become important
in understanding the increase with energy of the positron flux seen in
new data from the AMS-02 detector installed on the International Space
Station. Is it from dark-matter annihilation or from more conventional
astrophysical phenenomena?

HELIX is a balloon-borne detector based on a 1 T superconducting solenoid.
A drift chamber will be used to measure particle momenta while time-of-flight
counters will determine the velocities at low energies. At higher energies
a ring-imaging Cherenkov counter based on aerogel tiles and silicon
photomultipliers will take over. A 14-day circumpolar flight launched
from McMurdo Station on the coast of Antarctica has been scheduled for
the 2019/20 season.

Primary author

Presentation Materials