Accelerator Searches for Axions and Dark Matter
Dr. Richard Van de Water, Los Alamos National Laboratory, EE.UU.
The last decade has seen rapid developments in theories and
techniques used to search for dark sector physics using
intense accelerators. In the mass scale from ~MeV and up,
both electron and proton accelerators are ideal for producing
relativistic dark matter, axions, or other theorized dark
sector particles. This talk will give an overview of the
theory and the accelerator and detector techniques used for
dark sector searches. As an example, the talk will then
focus on a new experiment, the Coherent CAPTAIN-Mills
(CCM), which has begun running at the LANSCE Lujan center.
In a three year run CCM will search for sub-GeV dark matter
with sensitivities that probe early Universe relic density
limits. It will also probe for Axion Like Particles (ALP's)
parameter space un-tested by previous experiments and cosmo-
logical constraints, and test new interpretation of the
legendary LSND and MiniBooNE excesses. CCM will operate at
the Lujan Center at LANSCE which is a 100-kW neutron and
stopped pion source that delivers an 800-MeV proton beam
onto a tungsten target at 20 Hz with a pulse width of 290 ns.
The 10 ton liquid argon CCM detector is placed 23 m from the
target and is instrumented with 200 fast nano-second 8" PMT's
that can detect scattering events in time with the beam
from as low as 10 keV thresholds up to 200 MeV. Initial data
results will be shown demonstrating the power of the new
experiment.
Liga de Zoom:
https://cuaieed-unam.zoom.us/j/82622280628?pwd=c1R1UWpjbDdtM0RwYTNkK09kdmthdz09