Sphenix-calibration-l mailing list

["Pereira Da Costa, Hugo Denis Antonio" <hugo.pereira-da-costa AT lanl.gov>]

Ross,

Thanks for taking care of this. I have no comment.

Hugo

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From: Ross Corliss <ross.corliss AT stonybrook.edu>
Sent: Thursday, April 20, 2023 11:39 AM
To: Pereira Da Costa, Hugo Denis Antonio; Kimelman, Benjamin via sPHENIX-calibration-l
Subject: [EXTERNAL] abstract for tpot+average correction poster

 

Dear Hugo,

I apologize if you are already preparing an abstract, but on the assumption that you are fully occupied with TPOT commissioning, I propose the following: 

Characterizing Time-Averaged Distortions in the sPHENXI TPC with the TPC Outer Tracker, Hugo Pereira Da Costa (LANL)

The sPHENIX Time Projection Chamber (TPC) serves as the main tracking detector of the sPHENIX experiment, which began operating at the Relativistic Heavy Ion Collider at Brookhaven National Lab this year.  It operates with a quadruple-GEM avalanche stage which provides gain while restricting the flow of ions back into the chamber sufficiently to operate in streaming mode, without any additional gating.  However, in order to reach its design performance, the time-varying distortions due to the fields of the remaining ion backflow and primary ionization must be monitored and corrected.  The slowly varying component of the distortions is monitored by the TPC Outer Tracker (TPOT), a micromegas-based detector which provides an additional spacepoint for tracks within a limited azimuthal range.  This spacepoint enables a data-driven extraction of the distortion vectors within the detector, which can then be extrapolated to the entire chamber.  This poster presents the design of the TPOT and methods used to extract the apporpriate corrections to these moderate-timescale distortions.

-Ross

==========
Dr. Ross Corliss
Research Assistant Professor
Center for Frontiers in Nuclear Science
Stony Brook University
virtual office:  https://urldefense.com/v3/__https://stonybrook.zoom.us/my/rossoffice?pwd=ZmZ2SlRIMVFvUUJwbUkyOVNVTmE5QT09__;!!Bt8fGhp8LhKGRg!EYWkPcb9u22nOglDtTs-22vi3oeHNiZmc92hxFnmtOrwqZyZc_OBiIZvGJk_6cFc32DpeXMrezeh8yYCqAar72mSnjJiefe9rQUx1cJR$