Hi, I am

DR. ISMET SIRAL

Experimental Particle Physicist
Working on the LHCb Experiment
As a Post-Doc @ EPFL

Current Research Projects


Design and Simulation of Scintillating Fiber Trackers (LHCb & FCC-ee)

I am currently doing R&D on the cryogenic SciFi detector (Mighty SciFi Tracker) for the LHCb Upgrade-II. This involves qualifying cryogenic prototypes to quantify performance, conducting irradiation measurements on SciFi mats, and researching new fibers, SiPMs, and flexible interfaces. In parallel, I am working on a SciFi detector prototype for FCC-ee, currently focusing on the GEANT4 and Key4Hep simulations to extract efficiencies and particle ID capabilities for the FCC-ee Scintillating Fiber Tracker proposal.


Past Research Projects


Search for long-lived particles with large ionization energy loss

Between 2020 and 2025, I worked on the ATLAS "Search for long-lived particles with large ionization energy loss" where I served as the analysis contact for a team of 30+ researchers after 2023. The project searched for long-lived particles in ATLAS through the ionization energy (dE/dx) and Time of Flight (ToF) methods, targeting particles that evade standard calorimeter-based searches. I led the analysis strategy, optimized dedicated signal regions, created new triggers for increased efficiencies, and introduced new derivation formats to guarantee the longevity of the analysis. I was also interviewed as a subject-matter expert by Nature magazine regarding the results of this work.

ITk pixel and BCM' detector DAQ system development

As a CERN Fellow, I archited the TDAQ design of the BCM' luminosity detector, which will be situated inside the ATLAS Inner Tracker (ITk). This included designing the readout PCBs, mechanical structures, and the complete software, firmware, and hardware of the readout system. Additionally, I served as a primary FELIX (FPGA-based TDAQ hardware) readout expert for the ITk pixel detector, developing the DAQ software prototype and validating the first full working prototype with the complete data-chain.

Isolated high momentum track-based trigger for ATLAS

I developed a new High-Level Trigger (HLT) for the ATLAS detector aimed at identifying isolated high-momentum tracks reconstructed inside the inner detector, specifically designed for triggering on long-lived particles. The trigger relies solely on inner-detector tracks and is currently operational in the ATLAS experiment.

Evidence for the Standard Model tri-boson WWW production

I led the analysis that established the first evidence of tri-boson WWW production, which is a fundamental test for quartic gauge boson interactions of the Standard Model. I designed the analysis strategy for the WWW channel at 13 TeV and independently developed the analysis framework. This work provided the foundation for the subsequent discovery of WWW production. The earlier 8 TeV result was also published as the cover of the European Physical Journal C in March 2017.

Search for WW/WZ resonance production in the lvqq final state

I contributed to the search for WW/WZ resonance production in the lvqq final state, focusing on the decay channel where the W/Z decays into large-radius jets. I developed the fake track background prediction to estimate non-prompt backgrounds and evaluated a large portion of the systematic uncertainties.

Design and maintenance of the New Small Wheel's electronics database

I developed and designed a variety of databases, software tools, and webpage solutions for the ATLAS New Small Wheel (NSW) project to track electronics hardware and store its conditions database.

Heavy Quarks that Decay via the H,Z channel in 8 TeV ATLAS Data

For my master's thesis, I conducted a search for E6 Iso-Singlet quarks—proposed by Feza Gürsey—using the ZH → lljj + 2 jets decay channel in 8 TeV ATLAS data. I formed the analysis strategy, designed the analysis framework, and acted as the sole analyzer to set 95% confidence limits on the production of these exotic quarks.