PoS - Proceedings of Science
Volume 444 - 38th International Cosmic Ray Conference (ICRC2023) - Dark Matter Physics (DM)
DIMS Experiment for Macroscopic Dark Matter and Interstellar Meteoroid Study
F. Kajino
Full text: pdf
Pre-published on: August 18, 2023
Published on:
Abstract
DIMS is an experiment aiming to search for macroscopic dark matters and interstellar meteoroids. Nuclearites are nuggets of stable strange quark matter, hypothetical super-heavy macroscopic particles (macros), and possible important components of the dark matter in our Universe. The
velocity of the nuclearites is expected to be around 220 km/s in our galaxy, whereas the velocities of the interstellar meteoroids may exceed the escape velocity of the solar system by only several km/s. We are studying the possibility to search for such fast-moving particles by using very high-sensitivity CMOS cameras with a wide field of view. We estimate the observable mass ranges and flux limits for the moving nuclearites and the interstellar meteoroids from observed data. At
the 1st stage we set up 3 high-sensitivity CMOS camera stations with a separation distance of about 100 km at the central area in Japan, at the 2nd stage 2 stations were added with a separation distance of 17 km at the Telescope Array (TA) cosmic-ray-experiment site in Utah, USA, and at
the 3rd stage 2 stations were relocated from Japan to the TA site. We have been remotely operating over one year with such multiple stations. Details of the project science, present status and some
results are reported in this paper.
DOI: https://doi.org/10.22323/1.444.1376
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