TPC

TPC speed upgrade 2022

 This page is setup to keep track of meetings documents for the task force work for the
tpc speed upgrade for runs 23-25.

Choosing an external resistance for an IFC short

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It is clear that when a field cage short is close to the endcap, it is best to add an external resistance to compensate for the amount of the missing resistance from the short as that would restore th

Padrow 13 and Padrow 40 static distortions

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These two distortion corrections focus on static non-uniformities in the electric field in the gating grid region of the TPC, radially between the inner and outer sectors.

TPC

TPC

General Information

This page serves as a centralized page for TPC group's meetings (starting May 1, 2019).

TPC Inner Sector Upgrade, FEE card development

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 SAMPA Chip: the New 32 Channels ASIC for the ALICE TPC and MCH Upgrades

TPC GGDII "Gated Grid Driver/ Controller II"

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GridLeak Distortions after MiddleGridLeak Correction

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GridLeak Distortions after MiddleGridLeak Correction

I recommend using tabbed browsing to view these plots, whereby you open a series of plots in a series of tabs, and then move through the

GridLeak: Initial Studies

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GridLeak Distortion

GridLeak R&D

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 R&D on GridLeaks

Run 12 CuAu

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The TPC drift velocities were re-calibrated using the most recent TPC alignment.

TPC Hit Errors

TPC T0s

Global T0:

RunXI dE/dx calibration recipe

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This is a recipe of RunXI dEdx calibration by Yi Guo.

pp500 (2011)

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MC cluster reconstruction

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GridLeak Distortion Maps

 Using the code in StMagUtilities, these are maps of the GridLeak distortion.

Resistor box at the end of the Field Cage chain

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 After ring 181, the potentials are determined by a box of resistors which sit outside the TPC.

Cluster flags

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FCF

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 Please attach any information about the Fast Cluster Finder (FCF) here.

SpaceCharge in dAu

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In Run VIII, dAu data was acquired at high enough luminosities to worry about SpaceCharge (it was ignored previously in the Run III dAu data (2003)).