July 31, 2017 to August 4, 2017
Fermi National Accelerator Laboratory
US/Central timezone

Directional measurements of fast neutron backgrounds at SuperKEKB

Aug 1, 2017, 2:33 PM
IARC Building (Fermi National Accelerator Laboratory)

IARC Building

Fermi National Accelerator Laboratory

Presentation Particle Detectors Particle Detectors


Michael Hedges (BEAST II Collaboration)


During the commissioning of the SuperKEKB accelerator, the next-generation B factory located in Tsukuba, Japan, the BEAST II detector system was used to measure beam induced backgrounds. Fast neutrons have proven to be a notoriously pernicious background at collider experiments. Among the many measurements made by BEAST II, the Micro Time Projection Chambers (µTPCs) subsystem provided direction-sensitive measurements of fast neutrons by reconstructing the charge clouds from nuclear recoils in gas with high spatial resolution. We present measurements from the first SuperKEKB run, and compare the resulting data with beam-loss and detector simulations.

Primary author

Michael Hedges (BEAST II Collaboration)

Presentation materials