The primary goal of this project is to explore two-particle correlations in proton-proton (pp) collisions using event shape variables extensively used by our group in previous analyzes. In 2010, a pronounced structure in the two-dimensional function angular correlation function was measured for particle pairs at small azimuthal angular differences of delta phi and over a wide range of differences in pseudorapidity of delta eta. This structure is named the "ridge” and has been observed in events with high multiplicity. The ridge correlation was first seen in heavy ion collisions in which we know that quark-gluon plasma (QGP) is produced. Recently, a ridge structure has been observed in high-multiplicity pp events at 7 TeV. The reef in high-multiplicity pp events has sparked speculation about QGP formation in small systems. Recent ALICE results on the first observation of an increase in strangeness in high-multiplicity proton collisions also tell us that we do not yet understand the mechanism of QGP formation. Using the methods developed in the PI group can help to understand the origin of the “ridge” structure with a new method of eliminating the background that has already been used successfully by our group. The secondary goal of this project is to demystify the occurrence of sparking of GEM detectors used for TPC upgrade of ALICE detectors at CERN. PI established a GEM laboratory with a clean room using a previous UKF project and the group has already gained significant experience with GEM foils. GEM foils are an integral part of the upcoming ALICE detector upgrade, as they are necessary for planned pp and high-luminosity heavy ion collisions. This upgrade is also motivated by open-ended questions in QGP, as a high-luminosity run will result in a significant increase in the amount of data used for QGP analyzes.