Argon implementation in the TRT Digitization

Introduction

This page contain information about on-going study on validation of Argon implementation in the TRT Digitization package. The idea is to do precise validation of each step of Argon implementation and to document all changes which were done to make it to the note. Note will cover all changes which were done to make Argon implementation and will cover Simulation, Digitization and Reconstructions steps and it will play the role of a manual for the TRT Argon implementation. Current page will be dedicated mainly to the Digitization step.

Shortly, current page describe 3 main points:

• Validation of Argon implementation in TRT Digitization package.
• Documentation of all steps of implemetation in the note.
• Improvements to be done (tuning of Low Threshold, etc.)

Approximate deadline for the note: before TRT workshop in Krakow (25-27 of June)

Content of the digitization part of the note

Topic	Short description	Status
Overview of the problem	Short overview of main challenges which were faced during implementation of Argon digitization	???
Implementation of Ar/Xe mixed condition	Implementation of the possibility simultaneously simulate dierent gas mixtures in different TRT parts (before, simulation code supported usage only one type of mixture for the whole detector)	???
Geometry settings	How and where straw map information are stored and how it can be read and changed	???
PAI model and photoionization cross section	usage of PAI tool in Ar/Xe mixed condition; validation of deposited energy simultion to the gas;	???
Measured tables and values used for Argon	RT table, signal shaping function, etc. Where did they come from, how do they compare with Xenon, validation	???
Simulation of noise	Application of noise model used for Xenon in Argon	???

Validation plots

Distribution	Short description	To which parameters it is sensetive?
Residuals		???
Track reconstruction hit efficiency		???
Track extention franction		???
Number of hits per track		???
drift time distributions (LE, TE, ToT)		???

Suggestions and ideas from people

Title	Short description	Person who seggusted

Known bugs and ideas how to fix them

Possible improvements

• LT tuning
• ???

-- OleksandrViazlo - 15 May 2014