Bulletin of the American Physical Society
APS April Meeting 2023
Volume 68, Number 6
Minneapolis, Minnesota (Apr 15-18)
Virtual (Apr 24-26); Time Zone: Central Time
Session M12: Instrumentation II |
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Sponsoring Units: DPF Chair: Marco Muzio, Pennsylvania State University (Penn State) Room: Marquette III - 2nd Floor |
Monday, April 17, 2023 10:45AM - 10:57AM |
M12.00001: Construction, installation and commissioning of the LHCb Upstream Tracker Joseph D Shupperd The LHCb detector has undergone a substantial upgrade to cope with increased luminosity and data-taking utilizing a purely software trigger. The Upstream Tracker (UT) is a component of the new tracking system, together with the VELO vertex detector and the SciFi outer tracker. The UT allows for momentum determination that is important in the forward tracking algorithm, integral to the purely software trigger. This detector system is situated just upstream of the dipole magnet and comprises four planes of silicon strip detectors. The assembly of the modules hosting the Si detectors with the front-end electronics, and the construction of instrumented staves hosting the modules on a carbon fiber structure that provides mechanical support and CO2 evaporative cooling, was done at Syracuse University. The fully instrumented staves were shipped to CERN and mounted in two detector boxes, which were installed in the LHCb detector. The UT is currently being commissioned and is expected to be integrated in the experiment during the upcoming data taking period. This talk will showcase the construction, installation, and commissioning of the UT in the LHCb experiment. |
Monday, April 17, 2023 10:57AM - 11:09AM |
M12.00002: Module assembly and testing for the ATLAS Phase-II Inner Tracker Pixel Detector Tanvi Wamorkar The Inner Tracker, a new all-silicon detector, will replace the ATLAS inner tracker layers during the High Luminosity LHC (HL-LHC). Argonne National Laboratory (ANL) is responsible for the assembling and testing the thin quad modules, which will constitute the Inner System of the upgraded ATLS pixel detector. ANL will assemble and test these modules for the pre-production and production phase of the ATLAS upgrade program. We have developed techniques for automation of the testing procedure, which includes steps such as automation of the thermal cycling, and electrical scans of the modules. The details of ANL's module assembly and testing clean room setup, including the specific automation techniques, will be discussed in this talk. |
Monday, April 17, 2023 11:09AM - 11:21AM |
M12.00003: Quality Control and Functional Testing of the AMAC and HCC ASICs for the HL-LHC ATLAS ITk Strip Detector Robert P McGovern, Thomas Gosart The high-luminosity upgrade of the Large Hadron Collider (HL-LHC) will impose new requirements on the ATLAS detector. A new silicon-strip charged-particle tracking detector for ATLAS, the Inner Tracker Strip detector (ITk Strip) has been designed to meet the challenges of increased radiation levels, stricter timing requirements, and faster readout rates, and will provide increased detector granularity. The Hybrid Controller Chip (HCC) and the Autonomous Monitor And Control (AMAC) chip are two new radiation-tolerant ASICs developed for this detector. The HCC buffers and forwards control signals to multiple readout ASICs and serializes their readout data at 640 Mbps. The AMAC operates autonomously, monitoring detector module components for temperatures, voltages, and currents, and controlling them so that these do not reach dangerous levels. All HCCs and AMACs undergo a suite of quality control tests to verify their analog and digital functionality, and detailed grading schemes have been developed to determine which ASICs should be installed on the detector. Preliminary results of these tests, as well as results of functional tests of these ASICs, are presented. |
Monday, April 17, 2023 11:21AM - 11:33AM |
M12.00004: Irradiation testing of ASICs for the HL-LHC ATLAS ITk Strip Detector Andie Wall For the high-luminosity upgrade to the Large Hadron Collider (HL-LHC), the ATLAS Inner Detector will be replaced by an all-silicon tracker called the Inner Tracker (ITk), which consists of two systems: pixels and strips. The work presented will focus on two of the ITk Strip ASICs: the Hybrid Control Chip (HCC) and the Autonomous Monitoring and Control Chip (AMAC). Together, HCC and AMAC are responsible for performing system readout, monitoring, and control. To ensure these ASICs will successfully operate in the high-radiation environment of the HL-LHC, they need to be tested for radiation tolerance. Single event effects (SEEs) occur when high energy particles ionize materials as they pass through. The ASIC designs have SEE protection in place, and these protections can be tested by placing the ASICs in testbeams at laboratory facilities and monitoring their performance. Tests have been performed using both heavy ions and protons, and the ASIC designs were shown to protect against SEEs due to radiation. This talk will include background on SEEs, details of each test campaign, and results with interpretation in terms of HL-LHC performance. |
Monday, April 17, 2023 11:33AM - 11:45AM |
M12.00005: Testing and Validation of the Topological Clustering Algorithm for the ATLAS Global Trigger Timothy Mathew, Stephanie A Majewski, Ryan Stuve, Katherine R Kaylegian-Starkey, Chris Dudley ATLAS is expected to receive 10 times the integrated luminosity from the High-Luminosity Large Hadron Collider (HL-LHC) than the previous three LHC runs combined, with approximately 200 interactions per bunch crossing, leading to significant pileup. The HL-LHC Trigger and Data Acquisition system is undergoing significant upgrades to manage this pileup increase. As a part of these upgrades, the planned Global Trigger system will implement offline-inspired algorithms on full-granularity calorimeter information at 40 MHz. One such algorithm reconstructs noise-suppressed topological clusters, or topoclusters, that are used as the basis for jet and tau reconstruction. Versions of this algorithm are being developed in firmware, and simulations of calorimeter cell energies have been used to validate its performance. This presentation will focus on progress regarding testing and validation of topoclustering algorithm firmware and software with realistic simulations with a mean pileup rate of 200 interactions. A first look at the effects of data quality on the topocluster algorithm performance will be shown. |
Monday, April 17, 2023 11:45AM - 11:57AM |
M12.00006: Using GEM Tracking to Constrain Systematic Uncertainties of Moller Polarimeter at Hall A of Jefferson Lab. Faraz Chahili In this conference, we will present our work on using Gas Electron Multiplying (GEM) detectors to improve the accuracy of Moller Polarimeter measurements at Jefferson Lab's Hall A. By utilizing GEM detectors, we can sufficiently reduce the uncertainty caused by the Levchuk Effect and Radiative Corrections, which are major sources of systematic uncertainty in these measurements. Our technique involves using analytically derived mathematical functions to analyze GEM data with the intent of improving the Moller Polarimeter simulation software’s internal physics models, resulting in more accurate measurements of beam polarization. |
Monday, April 17, 2023 11:57AM - 12:09PM |
M12.00007: Early results from the 1-ton water-based liquid scintillator detector at Brookhaven National Lab Xin Xiang Water-based liquid scintillators (WbLS) are attractive neutrino detector materials because they allow the separation of Cherenkov and scintillation signals. Using WbLS large-scale neutrino experiments can benefit from both directional reconstruction and enhanced low-energy efficiency. Brookhaven National Lab (BNL) has long-standing expertise in developing WbLS and metal-doped liquid scintillators. We recently constructed and commissioned a 1-ton WbLS detector with excellent photo-sensor coverage and a capable data acquisition system. We will use this detector as a testbed for WbLS R&D. In this talk I will first give a brief overview of the 1-ton system. Then I will focus on the 1-ton status and early analysis results. The 1-ton detector also serves as a testbed for the next 30-tonne WbLS demonstrator currently under construction at BNL. |
Monday, April 17, 2023 12:09PM - 12:21PM |
M12.00008: Water-based Liquid Scintillator R&D at Brookhaven National Laboratory Ryan Wang The water-based liquid scintillator (WbLS) developed recently has many potential applications in neutrino physics and dark matter detection. WbLS, as the primary detector target, allows simple detector design, low maintenance, and adjustable scintillation light yield. In addition, the separation of scintillation and Cherenkov light enable directional reconstruction and enhance low energy efficiency. WbLS doping with elements with high thermal neutron capture cross-section is also an attractive material for constructing an outer detector for direct dark matter search. The data taking of a 1-ton prototype at Brookhaven National Laboratory (BNL) is ongoing and provides high-quality WbLS data. The 30-tonne demonstrator is planned to be built at BNL to test the stability and performance of WbLS further. In this talk, the overview and timeline for the 30 tonnes demonstrator will be presented. |
Monday, April 17, 2023 12:21PM - 12:33PM |
M12.00009: Expanding the CMS Endcap Muon System: design, development and performance of the ME0 upgrade project Devin M Aebi In the High Luminosity era of the Large Hadron Collider (HL-LHC) the delivered instantaneous luminosities will reach up to 5 ? 1034 cm-2s-1, five times the original design value. The individual LHC experiments will require upgrades to be able to sustain this increase in luminosity and maintain their performance. The Compact Muon Solenoid (CMS) has been undergoing such upgrades to the many subsystems. The Muon System has developed a plan to use Gas Electron Multiplier (GEM) technology in the high rate endcap regions. The GEM upgrade plans include 3 stations, GE1/1, GE2/1, and ME0. The ME0 upgrade is designed to cover the most-forward areas of the CMS detector, 2.0 < |η| < 2.8, including a previously undetected area 2.4 < |η| < 2.8. With the plan to fully install the entire GEM system to CMS by 2027 testing and development is underway. An ME0 test stack of multiple GEM chambers has been assembled at CERN as part of this development. We report the status of the ME0 test stack including the design, using multiple layers for object reconstruction, and required future work. |
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