scholarly journals First Operation of a Resistive Shell Liquid Argon Time Projection Chamber: A New Approach to Electric-Field Shaping

Instruments ◽  
2019 ◽  
Vol 3 (2) ◽  
pp. 28 ◽  
Author(s):  
Roman Berner ◽  
Yifan Chen ◽  
Antonio Ereditato ◽  
Patrick P. Koller ◽  
Igor Kreslo ◽  
...  
Keyword(s):  
Electric Field ◽  
Noble Gas ◽  
New Technology ◽  
Liquid Argon ◽  
Film Structure ◽  
Field Cage ◽  
Active Volume ◽  
Term Operation ◽  
Background Events ◽  
Time Projection

We present a new technology for the shaping of the electric field in Time Projection Chambers (TPCs) using a carbon-loaded polyimide foil. This technology allows for the minimisation of passive material near the active volume of the TPC and, thus, is capable to reduce background events originating from radioactive decays or scattering on the material itself. Furthermore, the high and continuous electric resistivity of the foil limits the power dissipation per unit area and minimizes the risks of damages in the case of an electric field breakdown. Replacing the conventional field cage with a resistive plastic film structure called “shell” decreases the number of components within the TPC and, therefore, reduces the potential points of failure when operating the detector. A prototype liquid argon (LAr) TPC with such a resistive shell and with a cathode made of the same material was successfully tested for long-term operation with electric field values up to 1.6 k V cm − 1 . The experiment shows that it is feasible to successfully produce and shape the electric field in liquefied noble-gas detectors with this new technology.

scholarly journals Design, construction and operation of the ProtoDUNE-SP Liquid Argon TPC

2022 ◽  
Vol 17 (01) ◽  
pp. P01005
Author(s):  
A. Abed Abud ◽  
B. Abi ◽  
R. Acciarri ◽  
M.A. Acero ◽  
M.R. Adames ◽  
...  
Keyword(s):  
Single Phase ◽  
Liquid Argon ◽  
Particle Identification ◽  
Neutrino Experiment ◽  
Successful Operation ◽  
Active Volume ◽  
Phase Liquid ◽  
Deep Underground ◽  
Time Projection ◽  
Design Construction

Abstract The ProtoDUNE-SP detector is a single-phase liquid argon time projection chamber (LArTPC) that was constructed and operated in the CERN North Area at the end of the H4 beamline. This detector is a prototype for the first far detector module of the Deep Underground Neutrino Experiment (DUNE), which will be constructed at the Sandford Underground Research Facility (SURF) in Lead, South Dakota, U.S.A. The ProtoDUNE-SP detector incorporates full-size components as designed for DUNE and has an active volume of 7 × 6 × 7.2 m3. The H4 beam delivers incident particles with well-measured momenta and high-purity particle identification. ProtoDUNE-SP's successful operation between 2018 and 2020 demonstrates the effectiveness of the single-phase far detector design. This paper describes the design, construction, assembly and operation of the detector components.

scholarly journals A New Concept for Kilotonne Scale Liquid Argon Time Projection Chambers

Instruments ◽  
2020 ◽  
Vol 4 (1) ◽  
pp. 6
Author(s):  
Jonathan Asaadi ◽  
Martin Auger ◽  
Roman Berner ◽  
Alan Bross ◽  
Yifan Chen ◽  
...  
Keyword(s):  
Integrated Circuits ◽  
Liquid Argon ◽  
Neutrino Experiment ◽  
Readout System ◽  
Scintillation Light ◽  
Active Volume ◽  
Deep Underground ◽  
Novel Concept ◽  
A Charge ◽  
Time Projection

We develop a novel Time Projection Chamber (TPC) concept suitable for deployment in kilotonne-scale detectors, with a charge-readout system free from reconstruction ambiguities, and a robust TPC design that reduces high-voltage risks while increasing the coverage of the light-collection system and maximizing the active volume. This novel concept could be used as a far detector module in the Deep Underground Neutrino Experiment (DUNE). For the charge-readout system, we used the charge-collection pixels and associated application-specific integrated circuits currently being developed for the liquid argon (LAr) component of the DUNE Near Detector design, ArgonCube. In addition, we divided the TPC into a number of shorter drift volumes, reducing the total voltage used to drift the ionization electrons, and minimizing the stored energy per TPC. Segmenting the TPC also contains scintillation light, allowing for precise trigger localization and a more expansive light-readout system. Furthermore, the design opens the possibility of replacing or upgrading components. These augmentations could substantially improve the reliability and the sensitivity, particularly for low-energy signals, in comparison to traditional monolithic LArTPCs with projective-wire charge readouts.

NEW TECHNOLOGY OF POLLUTANTS REMOVAL BY APPLICATION OF AN ELECTRIC FIELD UNDER THE FLAME

2004 ◽  
Vol 3 (3) ◽  
pp. 393-398
Author(s):  
Cleopatra Botez ◽  
Tudor Sajin ◽  
Aureliu Leca ◽  
Alexandru Craciun
Keyword(s):  
Electric Field ◽  
New Technology ◽  
Pollutants Removal

A large scale purification system for a liquid argon time projection chamber

1987 ◽  
Vol 258 (2) ◽  
pp. 170-176 ◽  
Author(s):  
Peter J. Doe ◽  
Richard C. Allen ◽  
Steven D. Biller ◽  
Gerhard Bühler ◽  
Wayne A. Johnson ◽  
...  
Keyword(s):  
Time Projection Chamber ◽  
Large Scale ◽  
Liquid Argon ◽  
Purification System ◽  
Time Projection

scholarly journals Evaluation of Portable Acceleration Solutions for LArTPC Simulation Using Wire-Cell Toolkit

2021 ◽  
Vol 251 ◽  
pp. 03032
Author(s):  
Haiwang Yu ◽  
Zhihua Dong ◽  
Kyle Knoepfel ◽  
Meifeng Lin ◽  
Brett Viren ◽  
...  
Keyword(s):  
Heterogeneous Computing ◽  
Programming Model ◽  
Liquid Argon ◽  
Simulation Code ◽  
Computationally Intensive ◽  
Physics Model ◽  
Specialized Hardware ◽  
Neutrino Experiments ◽  
High Level ◽  
Time Projection

The Liquid Argon Time Projection Chamber (LArTPC) technology plays an essential role in many current and future neutrino experiments. Accurate and fast simulation is critical to developing efficient analysis algorithms and precise physics model projections. The speed of simulation becomes more important as Deep Learning algorithms are getting more widely used in LArTPC analysis and their training requires a large simulated dataset. Heterogeneous computing is an efficient way to delegate computationally intensive tasks to specialized hardware. However, as the landscape of compute accelerators quickly evolves, it becomes increasingly difficult to manually adapt the code to the latest hardware or software environments. A solution which is portable to multiple hardware architectures without substantially compromising performance would thus be very beneficial, especially for long-term projects such as the LArTPC simulations. In search of a portable, scalable and maintainable software solution for LArTPC simulations, we have started to explore high-level portable programming frameworks that support several hardware backends. In this paper, we present our experience porting the LArTPC simulation code in the Wire-Cell Toolkit to NVIDIA GPUs, first with the CUDA programming model and then with a portable library called Kokkos. Preliminary performance results on NVIDIA V100 GPUs and multi-core CPUs are presented, followed by a discussion of the factors affiecting the performance and plans for future improvements.

scholarly journals Predicting transport effects of scintillation light signals in large-scale liquid argon detectors

2021 ◽  
Vol 81 (4) ◽  
Author(s):  
Diego Garcia-Gamez ◽  
Patrick Green ◽  
Andrzej M. Szelc
Keyword(s):  
Large Scale ◽  
Light Propagation ◽  
Liquid Argon ◽  
Equivalent Model ◽  
Neutrino Beam ◽  
Scintillation Light ◽  
Arrival Times ◽  
Light Detector ◽  
Transport Effects ◽  
Time Projection

AbstractLiquid argon is being employed as a detector medium in neutrino physics and Dark Matter searches. A recent push to expand the applications of scintillation light in Liquid Argon Time Projection Chamber neutrino detectors has necessitated the development of advanced methods of simulating this light. The presently available methods tend to be prohibitively slow or imprecise due to the combination of detector size and the amount of energy deposited by neutrino beam interactions. In this work we present a semi-analytical model to predict the quantity of argon scintillation light observed by a light detector with a precision better than $$10\%$$ 10 % , based only on the relative positions between the scintillation and light detector. We also provide a method to predict the distribution of arrival times of these photons accounting for propagation effects. Additionally, we present an equivalent model to predict the number of photons and their arrival times in the case of a wavelength-shifting, highly-reflective layer being present on the detector cathode. Our proposed method can be used to simulate light propagation in large-scale liquid argon detectors such as DUNE or SBND, and could also be applied to other detector mediums such as liquid xenon or xenon-doped liquid argon.

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