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Angular Resolution of Electrons in Gaseous Targets
Majd Ghrear, Sven E. Vahsen
Low-energy electron recoils are of interest in several planned and proposed future nuclear and particle physics experiments. The topology and directions of such recoils provide imp…
A Comparison of Micromegas with x/y Strip Charge Readouts for Directional Recoil Detection
Majd Ghrear, Alasdair G. McLean, Hima B. Korandla +3
Detecting the topology and direction of low-energy nuclear and electronic recoils is broadly desirable in nuclear and particle physics, with applications in coherent elastic neutri…
Report of the Topical Group on Micro-Pattern Gaseous Detectors for Snowmass 2021
B. Surrow, M. Titov, S. Vahsen +10
This report summarizes white papers on micro-pattern gaseous detectors (MPGDs) that were submitted to the Instrumentation Frontier Topical Group IF05, as part of the Snowmass 2021…
Deep learning for improved keV-scale recoil identification in high resolution gas time projection chambers
J. Schueler, M. Ghrear, S. E. Vahsen +2
Recoil-imaging gaseous time projection chambers (TPCs) with directional sensitivity are attractive for dark matter (DM) searches. Detectors capable of reconstructing 3D nuclear rec…
MPGDs for TPCs at future lepton colliders
Alain Bellerive, Jochen Kaminski, Peter M. Lewis +13
This submission will focus on advancements and advantages of Micro Pattern Gas Detector (MPGD) technologies and their applications to the construction of a dedicated Time Projectio…
A TPC-based tracking system for a future Belle II upgrade
Andreas Löschcke Centeno, Christian Wessel, Peter M. Lewis +4
In the next decade, intensity frontier experiments will require tracking systems that are robust against high event and background rates while maintaining excellent tracking perfor…
Recoil imaging for directional detection of dark matter, neutrinos, and physics beyond the Standard Model
C. A. J. O'Hare, D. Loomba, K. Altenmüller +164
Recoil imaging entails the detection of spatially resolved ionization tracks generated by particle interactions. This is a highly sought-after capability in many classes of detecto…
Measurements of Beam Backgrounds in SuperKEKB Phase 2
Zachary J. Liptak, Antonio Paladino, Luka Santelj +66
The high design luminosity of the SuperKEKB electron-positron collider will result in challenging levels of beam-induced backgro\ unds in the interaction region. Understanding and…
Application of recoil-imaging time projection chambers to directional neutron background measurements in the SuperKEKB accelerator tunnel
J. Schueler, S. E. Vahsen, P. M. Lewis +6
Gaseous time projection chambers (TPCs) with high readout segmentation are capable of reconstructing detailed 3D ionization distributions of nuclear recoils resulting from elastic…
Primary track recovery in high-definition gas time projection chambers
P. M. Lewis, M. T. Hedges, I. Jaegle +3
We develop and validate a new algorithm called \textit{primary track recovery} (\ptr) that effectively deconvolves known physics and detector effects from nuclear recoil tracks in…
Avalanche gain and its effect on energy resolution in GEM-based detectors
T. N. Thorpe, S. E. Vahsen
We present avalanche gain and associated resolution measurements recorded with a He:CO (70:30) gas mixture and pure SF, a Negative Ion (NI) gas. SF is of particular…
First 3D vector tracking of helium recoils for fast neutron measurements at SuperKEKB
M. T. Hedges, S. E. Vahsen, I. Jaegle +4
We present results from the first deployment of novel, high definition, compact gas Time Projection Chambers (TPCs) with pixel chip readout as part of the BEAST II beam background…
Directional recoil detection
Sven E. Vahsen, Ciaran A. J. O'Hare, Dinesh Loomba
Searches for dark matter-induced recoils have made impressive advances in the last few years. Yet the field is confronted by several outstanding problems. First, the inevitable bac…
Observables for Recoil Identification in High-Definition Gas Time Projection Chambers
Majd Ghrear, Sven E. Vahsen, Cosmin Deaconu
Directional detection of nuclear recoils is broadly desirable in nuclear and particle physics. At low recoil energies, this capability may be used to confirm the cosmological origi…
A time resolved study of injection backgrounds during the first commissioning phase of SuperKEKB
Miroslav Gabriel, Frank Simon, Hendrik Windel +13
We report on measurements of beam backgrounds during the first commissioning phase of the SuperKEKB collider in 2016, performed with the plastic scintillator and silicon photomulti…
CYGNUS: Feasibility of a nuclear recoil observatory with directional sensitivity to dark matter and neutrinos
S. E. Vahsen, C. A. J. O'Hare, W. A. Lynch +16
Now that conventional weakly interacting massive particle (WIMP) dark matter searches are approaching the neutrino floor, there has been a resurgence of interest in detectors with…
Compact, directional neutron detectors capable of high-resolution nuclear recoil imaging
I. Jaegle, P. M. Lewis, M. Garcia-Sciveres +10
We report on the design, production, and performance of compact 40-cm Time Projection Chambers (TPCs) that detect fast neutrons by measuring the three-dimensional (3D) ionizati…
First Measurements of Beam Backgrounds at SuperKEKB
P. M. Lewis, I. Jaegle, H. Nakayama +67
The high design luminosity of the SuperKEKB electron-positron collider is expected to result in challenging levels of beam-induced backgrounds in the interaction region. Properly s…
Readout technologies for directional WIMP Dark Matter detection
J. B. R. Battat, I. G. Irastorza, A. Aleksandrov +90
The measurement of the direction of WIMP-induced nuclear recoils is a compelling but technologically challenging strategy to provide an unambiguous signature of the detection of Ga…
Absolute Position Measurement in a Gas Time Projection Chamber via Transverse Diffusion of Drift Charge
P. M. Lewis, S. E. Vahsen, M. T. Hedges +3
Time Projection Chambers (TPCs) with charge readout via micro pattern gaseous detectors can provide detailed measurements of charge density distributions. We here report on measure…
3-D Tracking of Nuclear Recoils in a Miniature Time Projection Chamber
S. E. Vahsen, M. T. Hedges, I. Jaegle +6
The three-dimensional (3-D) reconstruction of nuclear recoils is of interest for directional detection of fast neutrons and for direction-sensitive searches for weakly interacting…
Charge-Focusing Readout of Time Projection Chambers
S. J. Ross, M. T. Hedges, I. Jaegle +5
Time projection chambers (TPCs) have found a wide range of applications in particle physics, nuclear physics, and homeland security. For TPCs with high-resolution readout, the read…