APS April 2022

Session

Instrumentation I

9 Apr 2022, 14:00

US

118. Construction and Testing of the first 12 sMDT Chambers at University of Michigan for the ATLAS HL-LHC upgrade

Neal Anderson (The University of Michigan)

09/04/2022, 14:00

Oral presentation

The Large Hadron Collider (LHC) will be upgraded to increase its luminosity by a factor of 7.5 relative to the design luminosity. The ATLAS detector will undergo a major upgrade to fully explore the physics opportunities provided by the upgraded LHC. In order to optimize trigger efficiencies at the High-Luminosity LHC (HL-LHC), the Muon Spectrometer will be upgraded by replacing the MDT...

85. Test beam and performance study of ATLAS New Small Wheel small-strip Thin Gap Chamber

Xinmeng Ye (University of Michigan (US) / University of Science and Technology of China (CN))

09/04/2022, 14:20

Oral presentation

The Large Hadron Collider is expected to reach an instantaneous luminosity of $5-7.5\times10^{34}cm^{-2}s^{-1}$ towards high-luminosity runs in the future. The ATLAS Phase-Ⅰ upgrade plans to replace the present innermost station of Muon Spectrometer in the forward region, Small Wheels, with the New Small Wheel (NSW) detector system in order to improve Level-1 muon trigger selectivity and...

70. Alignment system of the muon end-cap new small wheels

Camila Pazos (Tufts University (US))

09/04/2022, 14:40

Oral presentation

The muon spectrometer of the ATLAS detector at the LHC consists of thousands of muon precision chambers. Precise muon track reconstruction is crucial in order to achieve the physics goals of the ATLAS experiment, but attaining the required level of precision is not trivial due to the size and nature of the muon detectors. To reach the 80 microns precision needed to obtain a 10% precision on 1...

66. Performance of sMDT chambers for the HL-LHC ATLAS muon spectrometer upgrade

Kevin Michael Nelson (University of Michigan (US))

09/04/2022, 14:40

Oral presentation

New small Monitored Drift Tube (sMDT) chambers were developed by the Max Planck Institute (MPI) for the ATLAS muon spectrometer upgrade. The smaller tube size allows sMDT chambers to cope with the increased luminosity of the High Luminosity LHC (HL-LHC) and make space for additional Resistive Plate Chamber (RPC) layers. The University of Michigan will construct 48 sMDT chambers containing...

67. sMDT Production and Testing at UM for the HL-LHC ATLAS Muon Spectrometer Upgrade

Andy Chen (University of Michigan (US))

09/04/2022, 14:40

Oral presentation

To accommodate the high trigger-rate conditions at the High Luminosity Large Hadron Collider (HL-LHC) in Run 4 and onwards, the Monitoring Drift Tube (MDT) chambers in the inner barrel layer of the ATLAS muon spectrometer will be replaced with new small-diameter MDTs. The upgrade will allow for better muon tracking resolution and for the installation of new Resistive Plate Chambers (RPCs) to...

72. sTGC Trigger Chain Cosmic Ray Test

Man Yuan (University of Michigan (US))

09/04/2022, 14:40

Oral presentation

The New Small Wheel (NSW) phase-I upgrade is an extremely challenging project for high-luminosity LHC operations to improve both tracking and trigger capability of the ATLAS muon spectrometer for discoveries at the LHC.

NSW consists of two types of new detectors, the small-strip Thin Gap Chambers (sTGCs) and the MicroMegas (MM) chambers, both are capable of precision tracking and fast...