Calibration of the TileCal calorimeter at the ATLAS experiment

نویسنده

  • Lucia Báťková
چکیده

Názov Kalibrácia hadrónového kalorimetra TileCal experimentu ATLAS Abstrakt: Diplomová práca sa zaoberá kalibráciou hadrónového kalorimetra TileCal pomocou testov na zväzkoch miónov. Zväzky miónov poskytli interkalibráciu odozvy všetkých buniek kalorimetra. Moduly TileCal kalorimetra boli primárne kalibrované rádioaktívnym zdrojom cézia a následne boli testované pomocou kalibračných zväzkov častíc (e, μ, π). Elektromagnetická (EM) škála (použitá na konverziu signálu kalorimetra v pC na energiu uloženú meranou časticou v GeV) bola určená experimentálne v prvej vrstve kalorimetra pomocou zväzku elektrónov. Zväzok miónov dopadajúci pod 90◦ uhlom a prechádzajúci celou dĺžkou TileCal modulov poskytol nástroj na stanovenie konštánt vo zvyšných dvoch vrstvách, kde elektróny danej energie nepreniknú. Multiplikatívne faktory získané touto analýzou musia byť aplikované na signály z vrstiev (A, BC,D) na zachovanie uniformity EM škály a na to, aby sa dosiahla nezávislosť odozvy na hĺbke v smere pseudorapidity. Časť tejto práce je venovaná štúdiu odozvy tzv. ITC buniek v rámci koncových modulov. Kľúčové slová: Kalorimeter, Kalibrácia, Miónový zväzok Title: Calibration of the TileCal calorimeter at the ATLAS experiment Abstract: This diploma thesis deals with the calibration of hadronic calorimeter TileCal by muon beam test. Muon beams provided an inter-calibration of the response of all calorimeter cells. TileCal modules were primarily inter-calibrated with radioactive cesium source and then they were tested by particle beam tests(e, μ, π). The EM scale (used to convert the calorimeter signals (in pC) to energy deposited by measured particles) in the first calorimeter compartment was set with electron beams. The muon beams incident at 90◦ and traversing over the whole length of TileCal modules provide a tool for determination of the calibration constants for the compartments where the electrons given energy do not penetrate. Multiplicative factors obtained during this analysis must be applied to the signal from all compartments (A, BC, D) to keep EM scale uniform and to achieve radial depth independence. Especially, part of the thesis studies response of Inter Tile Calorimeter cells within Extended barrel modules.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

An Overview of the Atlas Tilecal Hadronic Calorimeter

This contribution is intended as a summary of the basic idea, the development and the present status of the hadronic calorimeter (TILE-CAL) of the ATLAS experiment at LHC.

متن کامل

Combining Hough Transform and Optimal Filtering for Efficient Cosmic Ray Detection with a Hadronic Calorimeter

The hadronic calorimeter of ATLAS, TileCal, provides a large amount of readout channels (about 10,000). Therefore, track detection may be performed by TileCal when cosmic muons cross the detector. The muon track detection has extensively been used in the TileCal commissioning phase, for both energy and timing calibrations, and it will also be important for background noise removal during nomina...

متن کامل

CALIBRATION AND MONITORING OF THE TILE HADRONIC CALORIMETER OF ATLAS WITH A 137Cs SOURCE

Monitoring and intercalibration of the ATLAS TileCal is based on a hydraulically driven gamma source system. Extensive R&D has been carried out and has led to a detailed design for the full ATLAS TileCal. A prototype system has been built and tested on the Barrel and Extended Barrel modules. The realisation of the Cs source system, results concerning its performance, comparisons with other cali...

متن کامل

The measurements of magnetic elde ects on scintillating tilesJ

We display the eeects of the magnetic eld on the light yield of the tiles used in the Atlas Hadronic Calorimeter. Covering a large range, from the Earth eld to about 1 Tesla, these results are in agreement with other experiments showing that the light yield of polystyrene based scintillator is increased by about 1% below about 100 mT, with a jump of about 0.6% at 1.2 mT and a 1% plateau startin...

متن کامل

Quality Factor for the Hadronic Calorimeter in High Luminosity Conditions

The Tile Calorimeter (TileCal) is the central section of the hadronic calorimeter of ATLAS experiment of the Large Hadron Collider (LHC) and has about 10,000 eletronic channels. An Optimal Filter (OF) has been used to estimate the energy sampled by the calorimeter and applies a Quality Factor (QF) for signal acceptance. An approach using Matched Filter (MF) has also been pursued. In order to co...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2009