Yerevan Physics Institute

The A.I. Alikhanyan National Science Laboratory (Armenian: Ա.Ի. Ալիխանյանի անվան Ազգային Գիտական Լաբորատորիա) is a research institute located in Yerevan, Armenia. It was founded in 1943 as a branch of the Yerevan State University by brothers Abram Alikhanov and Artem Alikhanian. It was often referred to by the acronym YerPhI (Yerevan Physics Institute). In 2011 it was renamed to its current name A.I. Alikhanyan National Science Laboratory.

## History and strategy

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The Yerevan Physics Institute was founded in 1943 as a branch of the Yerevan State University by brothers Abraham Alikhanov and Artem Alikhanian. Later two high-altitude cosmic ray stations were founded on Mount Aragats (3,200 m) and Nor Amberd (2,000 m).

The view of the Yerevan Physics Institute

In 1963 the institute was transferred to the Soviet Union Atomic Energy State Committee. The construction of a 6 GeV electron synchrotron accomplished in 1967 became an important landmark in the history of institute, it is the first particle accelerator in Armenia (Arus "ԱՐՈՒՍ"). After collapse of Soviet Union YerPhI continued research in the fields of high-energy physics and astrophysics in Armenia and worldwide using world biggest accelerators and cosmic ray detectors. Now YerPhI get status of A. Alikhanyan National Laboratory.

### Brief summary of scientific activities

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Among the key results of YerPhI in the early years were the discovery of protons and neutrons in cosmic rays, and the establishment of the first evidence of existence of the particles with masses between that of muons and protons. The high altitude research stations have remained the main research base of the Cosmic Ray Division (CRD) of YerPhI until now. Among the CRD achievements there were: discovery of sharp knee in light components of primary cosmic rays, detection of the highest energy protons accelerated on the Sun, and the creation of the Aragats Space environ¬mental Center in 2000 for studies of the solar-terrestrial connection, where CRD becomes one of the world's leaders.

The 6 GeV electron synchrotron was accomplished in 1967. During 1970-1991 synchrotron was operated with energies up to 4,5 GeV and in Experimental Physics Division were obtained significant results, including: hadronic properties of photons in π- meson photo-production on nuclei; structures of nucleon resonances in multi-polarization experiments, structure and characteristics of nuclear matter, important properties of X-ray transition radiation and channeling in monocrystals. Thanks to these achievements physicists from Yerevan Physics Institute started from 1985 are successfully participating in the large international collaborations.

Traditional topic of YerPhI is the development of new particle detectors. Wide spark chambers and transition radiation detectors are examples of the experimental techniques developed and implemented in YerPhI. During the last years groups of scientists from Yerevan Physics Institute have actively participated in intermediate and high energy physics experiments abroad (JLAB, DESY, CERN-LHC, MAX-lab, MAMI), exploring the meson and nucleon structures, electromagnetic interactions of the nucleon, quark-hadron duality, short range nucleon-nucleon correlations, quark hadronization in nuclear medium, physics beyond standard model, Higgs boson searches, quark-gluon plasma, fission and fragmentation of nuclei and hypernuclei and many other topics, as well as constructing experimental hardware and develop the software for data acquisition and analysis. The theoretical department assure major achievements in the following areas: B-meson physics, QCD and Related Phenomenology, Neutrino physics, Quantum Field Theory, String/M-theory, Integrable Models, Statistical physics, Condensed Matter and Quantum Information. These results are internationally recognized and highly cited.

In the mid-1980s in YerPhI was developed the concept of stereoscopic approach in Very High Energy gamma-ray astronomy using multiple Imaging Atmospheric Cherenkov Telescopes (IACT). This concept was materialized in the very successful IACT system (HEGRA). After first success, Armenian physicists successfully participate in operation of the IACT systems on the Canary islands (MAGIC) and in Namibia (H.E.S.S.). In the course of many years, the Applied Physics Department of YerPhI successfully investigates electron-energy structure of new wide-band laser materials using synchrotron radiation in various spectral regions. The investigations were carried in DESY and will be continued in MaxLab- II (Sweden).

Below are the integral parameters characterizing the efficiency of research conducted by national lab: number of publications and citations. The sizable enlargement of both parameters during last years is apparent. National lab scientists publish appr. 30% of scientific publications of Armenia. Most of publications appear in high impact factor journals; high quality of research in national lab is proved by citations – more than 60% of overall citations to papers published by scientists from Armenia belong to national lab.

## Structure

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The YerPhI has seven divisions and Computer Centre.

Experimental physics workshops are also parts of the institute. The main fields of research are:

* elementary particle physics
* nuclear physics
* cosmic ray physics and astrophysics
* theoretical physics
* condensed matter physics
* radiobiology
* Isotop investigation and production
* computer networking, computing
* educational programme

Directors

* Artem Alikhanian (1943–1973)
* Andrey Amatuni (1973–1992)[1]
* Ruben Mkrtchyan (1992–2001)
* Hrachia Asatryan (2001–2008)
* Ashot Chilingarian (2008–2018)
* Ani Aprahamian (2018–2023)
* Gevorg Karyan (2023-present)

## References

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1. ^ Amatuni's grave on hush.am

## External links

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* Official website

40°12′23″N 44°29′06″E﻿ / ﻿40.20639°N 44.48500°E﻿ / 40.20639; 44.48500

* v
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Yerevan landmarks

Historical sites and
notable landmarks|

* Shengavit archaeological site
* Erebuni Fortress
* Teishebaini archaeological site
* Tsiranavor Church of Avan
* Katoghike Church
* Red Bridge
* Zoravor Church
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* Blue Mosque
* Mordechai Navi Synagogue
* Saint Sarkis Cathedral
* Holy Mother of God Russian Church
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* Yerevan Ararat Brandy Factory
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* Mother Armenia
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* Komitas Pantheon
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Nature and parks|

* Hrazdan River
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Entertainment
and recreation|

* Grand Hotel Yerevan
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Culture and art|

* National Library
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* Khnko Aper Children's Library
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* Yerevan Opera
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* Komitas Chamber Music House
* Moscow Cinema
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* Yerevan Circus
* National Gallery of Armenia
* Yerevan Vernissage
* National Centre for Aesthetics

Museums|

* History Museum of Armenia
* Charents Museum of Literature
* Yerevan History Museum
* Matenadaran
* Erebuni Museum
* Modern Art Museum
* House-Museum of A. Khachaturian
* Silva Kaputikyan House-Museum
* Yeghishe Charents House-Museum
* Sergei Parajanov Museum
* Ara Sargsyan and Hakob Kojoyan Museum
* Near East Art Museum
* Cafesjian Museum of Art
* ARF History Museum
* Aznavour Centre
* Komitas Museum
* Armenian Railways Museum
* Geological Museum

Education|

* Yerevan State University
* National University of Architecture and Construction
* State Medical University
* State Pedagogical University
* Komitas State Conservatory
* National Agrarian University
* National Polytechnic University
* Brusov State University of Languages
* State Institute of Theatre and Cinematography
* Institute of Physical Culture and Sport
* State Academy of Fine Arts
* State University of Economics
* Crisis Management State Academy
* Haybusak University
* American University of Armenia
* French University in Armenia
* Russian-Armenian University
* Vazgen Sargsyan Military University
* PhysMath School
* Mkhitar Sebastatsi School
* Anatole France French School
* QSI School
* Avedisian School
* Ayb School
* Chinese-Armenian Friendship School
* European University of Armenia
* Eurasia International University

Science
and technology|

* Yerevan Physics Institute
* National Academy of Sciences
* Institute of Mathematics of National Academy
* Yerevan Computer Research Institute
* CANDLE Synchrotron Institute
* Tumo Center for Technologies

Sport|

* Vazgen Sargsyan Rep. Stadium
* Hrazdan Stadium
* Yerevan Football Academy
* Tigran Petrosian Chess House
* H. Hayrapetyan Equestrian Centre
* Karen Demirchyan Complex
* Yerevan Velodrome
* Yerevan Figure Skating and Hockey Sports School

Transportation|

* Yerevan railway station
* Trolleybuses in Yerevan
* Erebuni Airport
* Zvartnots International Airport
* Yerevan Underground

Squares, streets
and bridges|

* Republic Square
* Freedom Square
* Garegin Nzhdeh Square
* Charles Aznavour Square
* Aram Street
* Abovyan Street
* Mashtots Avenue
* Sayat-Nova Avenue
* Baghramyan Avenue
* Tamanyan Street
* Komitas Avenue
* Liberty Avenue
* Northern Avenue
* Victory Bridge
* Hrazdan Gorge Aqueduct
* Great Bridge of Hrazdan
* Davtashen Bridge

Government|

* President's Residence
* Government House
* National Assembly Building
* National Security Service
* Yerevan City Hall
* Constitutional Court
* Police of Armenia
* Prosecutor General
* Central Bank of Armenia
* Court of Cassation

Precincts|

* Ajapnyak
* Arabkir
* Avan
* Davtashen
* Erebuni
* Kanaker-Zeytun
* Kentron
* Malatia-Sebastia
* Nork-Marash
* Nor Nork
* Nubarashen
* Shengavit

Category:Yerevan

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