Congratulations to Gennady Alekseev on his 75th birthday!
G. D. Alekseev began working at the JINR Laboratory of Nuclear Problems in 1974 after graduating from Moscow Engineering Physics Institute (MEPhI). In 1983, he was awarded the degree of Candidate of Sciences (Physics and Mathematics). Scientific interests of Gennady Alekseev focus on the methodology and development of instrumentation for high-energy physics experiments. With his participation, instrumentation was developed and constructed for several major projects: "Inverse Pion Electroproduction on Nuclei" at the synchrocyclotrons of DLNP JINR and Leningrad Nuclear Physics Institute, "Positronium" at the U-70 accelerator (IHEP), and DELPHI (CERN).
From 1990 to 1994, G. D. Alekseev worked at CERN on the DELPHI and ATLAS projects, leading the JINR group. Within the ATLAS collaboration, he proposed a muon system design based on high-pressure drift tubes. It was this design that was selected and used for the implementation at the ATLAS facility. From 1995 to 2014, G. D. Alekseev participated in the D0 project at the Tevatron collider (Fermilab), leading the JINR team for this experiment since 1997. Under his decisive leadership, a muon tracking system based on mini-drift tubes and its readout electronics were developed. Within the D0 collaboration, he and his colleagues discovered for the first time heavy baryons containing a b-quark and measured their masses. The mini-drift tube technology was later successfully applied to the muon systems of the COMPASS and AMBER projects (CERN), and was also proposed for the upcoming next-generation projects PANDA (FAIR) and SPD (JINR).
Since 2012, G. D. Alekseev served as a head of the DLNP Department of Hadron Physics. Under his leadership, the department continued its work on the muon systems for the PANDA and SPD projects, bringing them to the stage of official approval by JINR and FAIR. Prototypes of a range muon system with electronics were constructed and prepared for beam tests at CERN and JINR. Currently, Gennady Dmitrievich is the leader responsible for the muon subsystem of the SPD project at the NICA collider. Since 2023, he has held the position of the head of the Sector of Hadron Physics of the DLNP Department of Colliding Beams.
In 1983, he was awarded an Honorary Diploma by the USSR Academy of Sciences; in 2003, he received the departmental badge of distinction in labour "Veteran of Nuclear Energy and Industry"; and in 2016, he was awarded the JINR Honorary Certificate. In 2021, G. D. Alekseev was honored with a Letter of Gratitude from the Director General of the Rosatom State Corporation, and in 2024, he was awarded the Certificate of Honor by the Head of Dubna. Gennady Dmitrievich Alekseev holds the title of "Honorary Staff Member of JINR".
