A Program to Identify Secondary Background Sources in the MOLLER Experiment
- Presenter
- Luc A. Barrett
- Campus
- UMass Amherst
- Sponsor
- Krishna Kumar, Department of Physics, UMass Amherst
- Schedule
- Session 4, 2:30 PM - 3:15 PM [Schedule by Time][Poster Grid for Time/Location]
- Location
- Poster Board A89, Campus Center Auditorium, Row 5 (A81-A100) [Poster Location Map]
- Abstract
- The MOLLER project is a proposed experiment at Jefferson Lab aiming to
measure the parity-violating asymmetry in electron-electron scattering.
Electrons accelerated to 11 GeV are incident on a liquid hydrogen
target. Those which scatter off of atomic electrons (electrons of
interest) are directed by a magnetic spectrometer to a background-free
region. However, the incident beam causes other high energy particles to
scatter from this target in various directions. These particles could
collide with other surfaces within the experimental chamber,
consequently creating an additional, undesired source of secondary
particles (so-called one-bounce backgrounds). The spectrometer
collimation system has been carefully designed, aided by a program
called "two-bounce" which checks to see if any of these one-bounce
background sources are visible to the detector. We have developed
"Two-bounce 3D" to model these sources in three dimensions to explore
new potential pathways that may not be covered by analyzing the
apparatus in two dimensions (r, z). Borrowing techniques from computer
graphics, it employs a bounding-box R-tree to efficiently organize the
geometry, allowing for significantly faster intersection computations.
Additionally, it utilizes parallel computing to better optimize the
usage of computational resources and increase the output resolution.
This work will help optimize the experimental design and minimize the
risk of unknown new sources of background in the final measurement.
- Keywords
- nuclear, high-energy, computational, simulation
- Research Area
- Physics and Nanotechnology
SIMILAR ABSTRACTS (BY KEYWORD)
Research Area |
Presenter |
Title |
Keywords |
Physics and Nanotechnology |
Diodati, Jackson Paul |
|
Simulation
|
Physics and Nanotechnology |
Keiser, Shane Alexander |
|
Simulation
|
Biological Organisms |
Hurlbut Lesk, Owen A. |
|
computational biology
|
Astronomy, Cosmology, and Astrophysics |
Stomski, Zachary M. |
|
kinetic simulations
|