PSD14: International Conference on Position Sensitive Detectors

Low-pressure position resolution studies in planar and cylindrical geometries with the novel 𝛍-RWELL MPGD

Not scheduled

20m

Mile End Campus: Graduate Centre Foyer and Peston Lecture Theatre (Queen Mary University of London, London, UK)

Poster Gas-based Detection Methods

Speaker

Lara Malpas (University of York)

Description

The novel 𝛍-RWELL MPGD is a proven high-gain, spark-resistant, single-amplification stage providing versatility in its applications within nuclear astrophysics, medical physics, and nuclear security industries. In this study, the 𝛍-RWELL is tested for its position resolution in a cylindrical active-target time projection chamber, TACTIC (TRIUMF Annular Chamber for Tracking and Identification of Charged particles), and the planar Test Chamber. TACTIC provides full angular coverage and the ability to constrain differential energy loss properties for charged particle-induced reactions whilst simultaneously scanning reaction vertices at different energies. This is the first application of the 𝛍-RWELL in a cylindrical geometry for these purposes.
A 241Am alpha source was used in gas pressures as low as 250mbar in a mixture of 90:10 Ar:CO₂. The following studies evaluated reconstructing the source position in TACTIC and the Test Chamber, where emphasis has been placed on low-pressure environments for increased centre-of-mass energy resolution. Early-stage results of this work detail the positional resolution of source reconstruction and the effects of changing gas pressure in multiple geometries for improved charged particle track reconstruction.