guest ::
| Home > Publications database > The GridGEM module for the ILD TPC & A new algorithm for kinematic edge determination |
| Home > Publications database > The GridGEM module for the ILD TPC & A new algorithm for kinematic edge determination |
| Book/Report/Dissertation / PhD Thesis | PUBDB-2018-05289 |
; ; ;
2018
Verlag Deutsches Elektronen-Synchrotron
Hamburg
This record in other databases:
Please use a persistent id in citations: doi:10.3204/PUBDB-2018-05289
Report No.: DESY-THESIS-2018-037
Abstract: The ILC is a planned linear collider, designed to provide polarized electrons and positronsat energies higher than 250 GeV, possibly up to 1TeV, never before reached at a leptoncollider. At the interaction point there will be two detectors, which will perform highprecision measurement at those energies. To achieve those performances, many of thecomponents have to be developed beyond the current state of the art. Moreover a preliminarysimulation and analysis work is required to understand what type of measurementswill those experiments be able to perform and which precision can they achieve.In this thesis we will be mostly concerned with the ILD experiment, which features alarge volume TPC used as its main tracker. The first part of this thesis focusses on thedesign, development and test of the first prototype of a new GEM-based readout module forthat TPC, built around an innovative ceramic support system which will allow a reductionof the dead space in the sensitive area of a factor of 3, as compared to traditional solutions.In the second part of this work we will focus on the development of a computationaltechnique to measure the position of edge-like kinematic end-points in physical distributions.Therefore this work will focus in particular on the characterisation of the algorithmto define a procedure to reliably evaluate the statistical and systematic errors associatedwith the measurement. At the ILD such a technique would be particularly useful to measurethe end-point in the kinematic distributions of the decay products of new physicalstates like those hypothesized by Supersymmetry. To evaluate the performance of thealgorithm and of the experiment in that scenario we applied that new technique to theprocess e−e+ ! ˜eR¯˜eR ! e±e ˜01˜01and measured the position of the kinematic edge inthe momentum distribution of the final state leptons obtaining a factor of 2 improvementon the accuracy in the measurement of the masses of the s-electron and Neutralino, ascompared to the currently published estimates.iii
Keyword(s): thesis ; time projection chamber ; ILD detector ; performance ; gas electron multiplier ; electronics: readout ; detector: design ; supersymmetry ; data analysis method ; lepton: final state ; momentum spectrum ; statistical analysis
|
The record appears in these collections: |
PDF
PDF (PDFA)