sPHENIX discussion of physics

["Liu, Ming Xiong" <mliu AT lanl.gov>]

Dear all, cc’d MVTX list,

 

After discussing with Marze, we would like to submit an additional poster to QM23, presenter will be determined soon.

 

“sPHENIX MVTX Pixel Detector Internal Alignment with AI-ML Approach”

 

The sPHENIX experiment has achieved a major milestone with the construction and installation of the cutting-edge three-layer Monolithic-Active-Pixel-Sensor (MAPS) based VerTeX detector (MVTX) in April 2023, in preparation for year-1 physics in May. The MVTX is the innermost tracking detector, boasting a remarkable spatial resolution of 5 um and covering 2.5-4.0 cm radially and a pseudorapidity range of |η| <2. With 432 ALPIDE sensors, each containing approximately 0.5M 27 um x 29 um pixels in an area of 1.5cm x 3.0cm, determining the position of each pixel in the sPHENIX global coordination presents a significant challenge. Our first step is to establish the relative position of each sensor in the local MVTX coordinates with an accuracy of better than 5 um. To this end, we have developed an AI-ML-based approach to determine the deviations of each sensor's position and orientation from the ideal geometry (dx, dy, dz) in translation and (dalpha, dbeta, dgama) in rotation. In this presentation, we will showcase the current status of the MVTX detector's internal alignment based on first-year commissioning data and discuss its impact on heavy flavor measurements.

 

Comments and suggestions are welcome.

 

Cheers,

Ming

 

PS –  you are welcome directly edit/comment on the goolge doc here,

https://docs.google.com/document/d/1ezCaN52PPp03CijDpqKFAZnmlUdg1aMfpIIwxM1wmbg/edit?usp=sharing

 

 

-----

Dr. Ming Xiong Liu P-3, MS H846 Physics Division   Office: 505.667.7125 Mobile: 505.412.7396 Los Alamos National Laboratory

 

 

From: sPHENIX-physics-l <sphenix-physics-l-bounces AT lists.bnl.gov> on behalf of Marzia Rosati <marziarosati AT gmail.com>
Date: Wednesday, April 19, 2023 at 5:01 AM
To: Da Li <dali1125 AT colorado.edu>, Martin Purschke <purschke AT bnl.gov>, Anthony Hodges <ahodges4 AT illinois.edu>, <egm2153 AT columbia.edu>, <sl4859 AT columbia.edu>, <hj2552 AT columbia.edu>, <cwshih0812 AT gmail.com>, <jpark4 AT bnl.gov>, <viw321 AT lehigh.edu>, chris pinkenburg <pinkenburg AT bnl.gov>, <luke.legnosky AT stonybrook.edu>, <chughes2 AT iastate.edu>, <benjamin.kimelman AT vanderbilt.edu>, Hugo Pereira Da Costa <hugo.pereira-da-costa AT lanl.gov>, <soltz1 AT llnl.gov>, <zji AT physics.ucla.edu>, <mjpeters AT mit.edu>, <josborn1 AT bnl.gov>, <rboucher2 AT fsu.edu>, <afrawley AT fsu.edu>, "Li, Xuan" <xuanli AT lanl.gov>, Zhaozhong Shi <zhaozhongshi AT lanl.gov>, Jakub Kvapil <jakub.kvapil AT lanl.gov>, Ming Liu <mliu AT lanl.gov>, <lebedev AT iastate.edu>, <nja1 AT iastate.edu>, <mim219 AT lehigh.edu>, <vbailey13 AT gsu.edu>, <Mkhan75 AT student.gsu.edu>
Cc: Marzia Rosati via sPHENIX-l <sphenix-l AT lists.bnl.gov>, <sphenix-physics-l AT lists.bnl.gov>
Subject: [Sphenix-physics-l] Poster abstracts due on Friday April 21

 

Everyone who submitted a poster proposal is approved to submit a poster abstract for Quark Matter. Dennis Perepelitsa will be in touch to resolve the very few potential overlaps since there were 30 poster proposals, the full list is in the spreadsheet attached to the sPHENIX QM23 agenda page at https://indico.bnl.gov/event/19188/

We need to quickly write abstracts and circulate them to the relevant lists. Abstracts have to be approved by the Collaboration and the sPHENIX rule is that they have to be circulated a week before the submission deadline. Authors, please prepare an abstract and circulate it to the relevant group for approval (either the topical group or detector/software group) by noon Friday April 21. 

Best Regards
Marzia

 

===============================================
Marzia Rosati (she/her/hers)
Professor, Department of Physics & Astronomy
Iowa State University
Email: mrosati AT iastate.edu
Phone: (515)294-8573
================================================

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