Bulletin of the American Physical Society
2021 Fall Meeting of the APS Division of Nuclear Physics
Volume 66, Number 8
Monday–Thursday, October 11–14, 2021; Virtual; Eastern Daylight Time
Session KJ: Instrumentation V |
Hide Abstracts |
Chair: Thomas Baumann, FRIB/NSCL Room: Tremont |
Wednesday, October 13, 2021 11:30AM - 11:42AM |
KJ.00001: Large-Area TKIDs for Charged Particle Detection Elizabeth M Scott, Hans P Mumm, Jiansong Gao, Shannon M Hoogerheide, Colin A Heikes, Joel N Ullom, Michael Vissers Neutron beta decay, the process by which a free neutron decays into a proton, electron, and antineutrino, is the simplest example of the semi-leptonic weak interaction. Experimentally, it is a powerful way to search for physics beyond the Standard Model. We are investigating a new detector paradigm for charged particle detection that could potentially yield dramatic improvement in sensitivity. The majority of beta decay experiments have traditionally used semiconductor or common scintillation detectors. Investigating low temperature detectors (sub-1K) could inspire a new generation of neutron beta decay experiments. These detectors, including Transition Edge Sensors (TES) and Microwave Kinetic Inductance Detectors (MKID), have been used in X-ray and gamma spectroscopy as well as dark matter searches and have been shown to have photon energy resolutions on the order of tens of eV or better. They can be multiplexed to create large area detectors with energy resolutions well below ~ 1 keV, which could significantly improve how particle detection is performed for beta decay experiments. This talk reviews our progress in prototyping a large-area thermal kinetic inductance detector (TKID) for charged particle detection. |
Wednesday, October 13, 2021 11:42AM - 11:54AM |
KJ.00002: Design of Active Coils System Can Build a Uniform Magnetic Field and Tune The Gradients Up to The Third Order Ahmad Saftah, Christopher Crawford An extremely uniform magnetic field is often required in high precision measurements such as the search neutron Electric Dipole Moment (nEDM) in order to reduce the false signals. One way to achieve that is to use magnetic shielding material such as mu-metal sheets. Another way is to use gradient coils to build an equivalent and opposite gradient of the background to cancel higher orders gradients. I will present an active system of coils that can build a uniform magnetic field and gradient up to the third order of solid harmonic gradients. |
Wednesday, October 13, 2021 11:54AM - 12:06PM |
KJ.00003: Precision Magnetic Field Direction Measurements for Neutron Spin Structure Studies Murchhana Roy, Suman Kandu, Wolfgang K Korsch The experiments E12-06-110 and E12-06-121 at Jefferson Lab require the helium-3 target polarization direction to be measured with a precision of ± 0.1° in a fixed Hall C coordinate system to correct for the contribution of longitudinal electron asymmetry to the total measured asymmetry. A novel air-floated compass was conceptualized and constructed at the University of Kentucky that achieved the required level of precision in the horizontal magnetic field direction measurements. The magnetic field direction was determined using an optical method by reflecting a laser beam off mirrors mounted on a compass, aligned perpendicular to the magnetic axis of the compass magnet as precisely as possible. The compass calibration techniques and the results from the magnetic field direction measurements in Hall C will be presented. |
Wednesday, October 13, 2021 12:06PM - 12:18PM |
KJ.00004: AI-optimised Design of the Tracking System at the Electron Ion Collider Cristiano Fanelli, Karthik Suresh, Zisis Papandreou The Electron-Ion Collider (EIC) is a cutting-edge accelerator experiment proposed to study the nature of the "glue'' that binds the building blocks of the visible matter in the universe. The proposed experiment will be realized at Brookhaven National Laboratory in approximately 10 years from now, with the detector design and R&D currently ongoing. Noticeably EIC can be one of the first facilities to leverage on Artificial Intelligence (AI) during the design phase. Optimizing the design of its tracker is of crucial importance for the EIC Comprehensive Chromodynamics Experiment (ECCE), a consoritum that is proposing a detector design based on a 1.5T solenoid. The optimization is an essential part of the R&D process and ECCE includes in its structure a working group dedicated to AI-based applications for the EIC detector. In this talk we describe an unprecedented study in detector design using AI. Our approach deals with a complex optimization in a multidimensional design space driven by multiple objectives that encode the detector performance, while satisfying several mechanical constraints. We describe our strategy and show preliminary results for the Si tracking system. |
Wednesday, October 13, 2021 12:18PM - 12:30PM |
KJ.00005: Progress on the N=126 factory at Argonne National Laboratory Adrian A Valverde, Al Barcikowski, Maxime Brodeur, Daniel P Burdette, Jason A Clark, Russell Knaack, Biying Liu, Guy Savard, Kumar S Sharma, Dwaipayan Ray, Xinliang L Yan, Bruce J Zabransky Multi-nucleon transfer (MNT) reactions between two heavy ions offer a unique method of producing heavy, neutron-rich nuclei that cannot be effectively accessed using traditional fragmentation or fission production techniques. The N=126 factory currently under construction at Argonne National Laboratory's ATLAS facility will make use of these reactions to study, for example, the neutron-rich nuclei near the N=126 shell closure critical for understanding the astrophysical r-process and the formation of the A~195 abundance peak. Due to the wide angular distribution of MNT reaction products, a large-volume gas catcher will be used to convert these into a continuous low-energy beam. This beam will undergo preliminary separation in a magnetic dipole of resolving power R~103 before passing through an RFQ cooler-buncher and MR-TOF system of resolving power R>105, sufficient to suppress isobaric contaminants. These isotopically separated, bunched low energy beams will then be available for experimental systems at ATLAS such as the CPT mass spectrometer for precision mass measurements. The status of the facility under construction will be presented. |
Wednesday, October 13, 2021 12:30PM - 12:42PM |
KJ.00006: Ongoing development towards novel beta-decay spectroscopy station at ISOLDE Philipp Wagenknecht, James Christie, Jesse N Farr, Isidora Fletcher, Donnie Hoskins, Zhengyu Xu, Miguel Madurga Beta decay and collinear laser spectroscopy are proven efficient tools to study nuclear structure far from stability. Two areas of significance are investigations into nuclear deformation and shape coexistence, as well as delayed neutron emissions used in nuclear energy applications. This contribution presents the ongoing development towards a novel beta-decay spectroscopy station for the VITO experiment at CERN’s radioactive ion beam facility ISOLDE. The setup will utilize both collinear laser spectroscopy and beta-decay spectroscopy to measure the energy and spin-parities of the ground and excited states of radioactive beams. Initial designs of the support structure, magnetic field, and detector array have been produced with the use of CAD, COMSOL, and GEANT4 simulation. This talk will serve as a status summary of the progress that has been made since 2019. |
Wednesday, October 13, 2021 12:42PM - 12:54PM |
KJ.00007: Instrumentation in the far forward regions of the LHC and EIC Michael Murray, Matthias Perdekamp, Ricardo Longo, Quan Wang, Alice C Mignerey, Tim Koeth, Peter Steinberg, Brian A Cole Instrumentation in the far forward regions of the LHC and EIC is vital for the realizing the potential of both machines to understand the multidimenionsal structure of protons and nuclei. We will review the technological challanges for calorimetry & tracking in this region, recent R&D, and feasible approaches to building such detectors. In particular the joint ATLAS/CMS effort on Zero Degree Calorimetry JZCapa, and the eRD27 effort on ZDCs for the LHC will be reviewed. |
Wednesday, October 13, 2021 12:54PM - 1:06PM |
KJ.00008: Preliminary Performance Studies of the MoNA-Sweeper setup in S2 at FRIB Andrew Wantz, Paul L Gueye, Thomas Baumann, Belen Monteagudo The Facility for Rare Isotope Beams (FRIB), which is expected to become operational in 2022, will deliver higher energetic beams (a factor of around two up to 200 MeV) compared to its predecessor, the National Superconducting Cyclotron Laboratory (NSCL). The ability to identify various reaction products from populated reaction channels is therefore essential for any successful scientific program that requires elemental and isotopic separation. Therefore, sufficient resolution must be achieved to identify and differentiate particles with differing proton number (Z) and mass-to- charge ratio (A/q). The LISE++ and nptool (which runs on a ROOT and GEANT4 framework) simulation packages were used to gauge and optimize anticipated capabilities of the Modular Neutron Array and Sweeper Setup within the S2 vault at FRIB. The invariant mass dependence on the resolutions of individual detectors and incoming beam energy will be presented and discussed. |
Wednesday, October 13, 2021 1:06PM - 1:18PM |
KJ.00009: Status of CHICO-X upgrade Ching-Yen Wu To be fully compatible to GRETA, CHICO needs an upgrade to CHICO-X by redesigning the detector chamber and pixelated position-sensing board. The design has been finalized after the design of GRETA holding frame was completed in late 2020. The chamber has an outer diameter of 12.6 inches and a flight path of 13 cm from the target to the cathode board at 49o. The angular coverage for theta is from 25o to 77o for the forward hemisphere and from 103o to 155o for the backward hemisphere. The phi coverage is 280o out of 360o. The major changes include the sliding O-ring seal for the pressure window and the integrated design for detector chamber. Some detailed design will be presented together with the schedule to complete this project. |
Follow Us |
Engage
Become an APS Member |
My APS
Renew Membership |
Information for |
About APSThe American Physical Society (APS) is a non-profit membership organization working to advance the knowledge of physics. |
© 2024 American Physical Society
| All rights reserved | Terms of Use
| Contact Us
Headquarters
1 Physics Ellipse, College Park, MD 20740-3844
(301) 209-3200
Editorial Office
100 Motor Pkwy, Suite 110, Hauppauge, NY 11788
(631) 591-4000
Office of Public Affairs
529 14th St NW, Suite 1050, Washington, D.C. 20045-2001
(202) 662-8700