Bulletin of the American Physical Society
APS April Meeting 2021
Volume 66, Number 5
Saturday–Tuesday, April 17–20, 2021; Virtual; Time Zone: Central Daylight Time, USA
Session Q20: Detector Development for DUNELive
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Sponsoring Units: DPF Chair: Sarah Lockwitz, Fermilab |
Monday, April 19, 2021 10:45AM - 10:57AM Live |
Q20.00001: Purity Monitoring for ProtoDUNE-SP Wenjie Wu The Deep Underground Neutrino Experiment (DUNE) is a next-generation long-baseline neutrino oscillation experiment which aims to measure the oscillation patterns of $\nu_\mu/\nu_e$ and $\bar\nu_\mu/\bar\nu_e$ over a range of energies. DUNE far detectors are based on liquid argon TPC (LArTPC) technology. In July 2020, DUNE's single-phase prototype ProtoDUNE-SP at CERN finished its 2-year Phase-1 running, which successfully collected test beam data and cosmic ray data. The DUNE collaboration is preparing the ProtoDUNE-SP Phase-2 run, expected to start in late 2022. The purity of liquid argon is essential for the successful operation of a LArTPC, the requirement of which is determined by the maximum drift length of ionization electrons. A purity monitor is a miniature TPC that measures the lifetime of electrons generated from the photocathode via the photoelectric effect. It enables continuously monitoring of the state of the detector, especially while filling the cryostat and when liquid argon recirculation systems are operating. The purity monitoring system in ProtoDUNE-SP Phase-1 consists of three purity monitors. It continuously monitored liquid argon purity throughout the entire lifetime of ProtoDUNE-SP Phase-1, which was critical to the experiment's successful commissioning, [Preview Abstract] |
Monday, April 19, 2021 10:57AM - 11:09AM Live |
Q20.00002: ICEBERG for DUNE Cold Electronics Test Wanwei Wu ICEBERG is a small liquid argon time projection chamber at Fermilab built to test cold electronics for the Deep Underground Neutrino Experiment (DUNE). Since DUNE is still developing its electronics, it is important to benchmark different designs. ICEBERG is being used to test different cold electronics prototypes with different configurations. The results from these ICEBERG tests will help DUNE evaluate its electronic designs. This talk presents the status of ICEBERG and the measurements of noise and signal-to-noise ratios for different cold electronics prototypes. [Preview Abstract] |
Monday, April 19, 2021 11:09AM - 11:21AM Live |
Q20.00003: A Highly Granular Calorimeter System for the DUNE Near Detector Lorenz Emberger The DUNE experiment requires a highly capable near detector system to achieve its ambitious physics goals. One of the subsystems of the near detector is the ND-GAr detector, which will consist of a high pressure gaseous Argon TPC surrounded by an electromagnetic calorimeter, embedded in a magnetic field. The calorimeter complements the tracking capabilities of the TPC with photon and neutron reconstruction to enable a precise reconstruction of the final states of neutrino interactions in the detector volume. The calorimeter will use highly granular active elements consisting of plastic scintillators and SiPMs, as well as scintillator strips with double-sided readout by SiPMs, both of with sub-ns timing capabilities. This enables directional reconstruction of electromagnetic showers crucial for $\pi^0$ localization, high neutron sensitivity and energy measurement via time of flight. The fine granularity of the detector, together with possible additional muon detector layers outside of the magnet also provides powerful muon/pion separation essential for a precise characterisation of the neutrino beam. The presentation gives an overview over the evolving design of the DUNE ND-GAr calorimeter and will discuss the expected performance and its relevance for the DUNE physics program. [Preview Abstract] |
Monday, April 19, 2021 11:21AM - 11:33AM Live |
Q20.00004: Characterization of Gaseous-Ar Operations of the ALICE TPC for the DUNE near detector Matthew Judah The DUNE near detector complex will include the ND-GAr detector, which has a high-pressure gaseous argon time projection chamber (HPgTPC) at its heart. The HPgTPC for the DUNE experiment will consist of the central tracking detector from the ALICE experiment at the Large Hadron Collider. One of ALICE's Inner ReadOut Chambers (IROC) is in a test stand based at Fermilab and one of the Outer ReadOut Chambers (OROC) is being tested at RHUL. Both IROC and OROC are standard multiwire proportional chamber used for amplifying the small gas signal via further ionization of the primary ionization electrons through avalanche formation. It is essential to have a detailed understanding of the characteristics of these readout chambers using the planned operating conditions in the DUNE near detector complex. This presentation aims to illustrate the progress towards the characterization the electron transport and signal readout of this test stand detector using simulation and data from a ${}^{55}$Fe calibration source. [Preview Abstract] |
Monday, April 19, 2021 11:33AM - 11:45AM Live |
Q20.00005: Dynamic Temperature Profiler in ProtoDUNE Ranjan Dharmapalan Precise monitoring of the liquid argon temperature is crucial for large neutrino detectors such as the Deep Underground Neutrino Detector (DUNE) ploying liquid argon time projection chamber (LarTPC) technology. Liquid argon temperature impacts the ionization electron drift velocity, liquid argon flow, purity distribution and thus the overall energy calibration. The dynamic temperature profiler is a 7 m vertical array of 24 sensors which measure cryogenic temperatures with a precision of a few mK. The profiler is motorized and moves vertically, while in the detector, and cross-calibrates neighboring sensors. The high precision allows monitoring of the recirculation efficiency and purification of liquid argon while providing input to the fluid flow simulations. This talk reports on the operation of the dynamic temperature profiler in the ProtoDUNE experiment at CERN. [Preview Abstract] |
Monday, April 19, 2021 11:45AM - 11:57AM Live |
Q20.00006: DUNE ND-GAr Gas Flow Studies and Electrostatic Simulations Christopher Hayes The Deep Underground Neutrino Experiment (DUNE) will have as part of its near detector suite a component called ND-GAr which features a high-pressure (10 atmospheres) gaseous argon target. The current design for the target is a cylindrical-geometry Time Projection Chamber (TPC), operating at a static field of 400V/cm. A sampling plastic-scintillator electromagnetic calorimeter surrounds the TPC and occupies much of the remaining pressurized volume within the bore of a superconducting solenoidal magnet. For this presentation, simple gas flow and electrostatic simulations, prepared using the Elmer open-source finite-element software suite, will be discussed. Electrostatic simulations have been performed for both single and dual anode design options. Gas flow simulations are prepared specifically for the TPC volume, and for the volume surrounding the TPC. [Preview Abstract] |
Monday, April 19, 2021 11:57AM - 12:09PM Live |
Q20.00007: Commissioning of the ICARUS Time Projection Chambers Justin Mueller The ICARUS T600 LArTPC detector successfully ran for three years at the underground LNGS laboratories, providing a first sensitive search for LSND-like anomalous electron neutrino appearance in the CNGS beam. After a significant overhauling at CERN, the T600 detector has been placed in its experimental hall at Fermilab, where the cryogenic plant commissioning was completed in April 2020 with the cryostats filled with liquid argon. In August 2020, the drift high voltage was raised to nominal levels and the first events observed with full TPC readout. Commissioning of the TPC system has since been underway. ICARUS is being put into operation to collect the first neutrino events from the Booster Neutrino Beam (BNB) and the Neutrinos at the Main Injector (NUMI) off-axis beam. Searches for sterile neutrinos will then begin in the framework of the Short Baseline Neutrino Program, devoted to clarifying the open questions of previously observed short-baseline neutrino anomalies. This talk will summarize the commissioning of the ICARUS time projection chambers toward taking quality data for neutrino physics analysis. [Preview Abstract] |
Monday, April 19, 2021 12:09PM - 12:21PM Live |
Q20.00008: Commissioning the ICARUS Side Cosmic Ray Tagger Tyler Boone The installation of the ICARUS Cosmic Ray Tagger (CRT) side wall hardware is nearing completion and commissioning of the system is underway. Methods for investigating, isolating, and eliminating noise will be discussed, as well as the status of the integration of CRT readout and analysis with the light detection and charge track ionization systems. [Preview Abstract] |
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