Chevry, Ain

Pregnin is a hamlet administratively part of the Saint-Genis-Pouilly commune in the Ain département, France. It is 2.6 km (1.6 mi) from the Swiss border, and 10.4 km (6.5 mi) from downtown Geneva. It is also home Les Lutins de Pregnin, an organisation that funds local schools and organises community events.

Crozet (French pronunciation: [kʁozɛ]) is a commune in the Ain department in eastern France. Crozet is nestled at the foot of the Jura mountains in eastern France some 15 kilometres (9 mi) from the centre of the Swiss city of Geneva and approximately 150 kilometres (93 mi) from the French city of Lyon. It is also near Geneva International Airport, at a distance of some 10 kilometres (6 mi). Its chief attraction is a cable car which carries hikers to the top of the Jura during the summer and serves a small ski resort during the winter. It has several sporting clubs: the St-Genis-Ferney-Crozet sporting association (soccer), a tennis club, and a ski club. Other places of interest include the remains of the château de Rossillon, a church (reconstructed around 1830), the Crozet forest, and the Monts-Jura ski area, which runs between Crozet and the town of Lélex in the adjacent valley.

Échenevex ([eʃnəvɛ]) is a commune in the Ain department in eastern France. As of 2020, it is the commune with the fifth highest median per capita income (€51,020 per year) in France.

The canton of Saint-Genis-Pouilly is an administrative division of the Ain department, in eastern France. It was created at the French canton reorganisation which came into effect in March 2015. Its seat is in Saint-Genis-Pouilly.It consists of the following communes: Ferney-Voltaire Ornex Prévessin-Moëns Saint-Genis-Pouilly

ALICE (A Large Ion Collider Experiment) is one of nine detector experiments at the Large Hadron Collider at CERN. The other eight are: ATLAS, CMS, TOTEM, LHCb, LHCf, MoEDAL, FASER and SND@LHC.

Saint-Genis-Pouilly (French pronunciation: [sɛ̃ ʒəni puji]; Arpitan: Sant-Genés-Polyi) is a commune in the Ain department within the Auvergne-Rhône-Alpes region of eastern France. It is located in the Pays de Gex, at the foot of the Jura Mountains. Bordering the Swiss frontier, it is part of the cross-border area of Geneva. With a population of almost 14,000 inhabitants (2019), it is the fifth most populous commune in the department of Ain.A large portion of CERN, the European laboratory for particle physics, is located within the territory of Saint-Genis-Pouilly; the ALICE experiment is located on the periphery of the town, and the French entrance to the primary CERN campus (Meyrin) and the ATLAS experiment are located only 3 km from the centre of St Genis. CERN is the world's largest fundamental physics research laboratory and its presence has largely been responsible for the development of the community of Saint Genis since the middle of the 1960s.

Ségny (French pronunciation: [seɲi]), also written Segny, is a commune in the Ain department in eastern France. Ségny is situated in the east of the department, in a district of the Lake Geneva / River Rhône basin known as the Pays de Gex. It lies on the important RN 5 trunk road from Paris to Geneva and is just five minutes by road from Geneva Cointrin International Airport. A local bus service connects Ségny to Geneva city centre, which is some 13 km (8.1 mi) away. Ségny became a member of the Pays de Gex Community of Communes on 1 January 1996. The commune is bordered by Cessy to the north, Versonnex to the east, Prévessin-Moëns and Ornex to the south, and Échenevex and Chevry to the west.

The Super Proton Synchrotron (SPS) is a particle accelerator of the synchrotron type at CERN. It is housed in a circular tunnel, 6.9 kilometres (4.3 mi) in circumference, straddling the border of France and Switzerland near Geneva, Switzerland.

The ISR (standing for "Intersecting Storage Rings") was a particle accelerator at CERN. It was the world's first hadron collider, and ran from 1971 to 1984, with a maximum center of mass energy of 62 GeV. From its initial startup, the collider itself had the capability to produce particles like the J/ψ and the upsilon, as well as observable jet structure; however, the particle detector experiments were not configured to observe events with large momentum transverse to the beamline, leaving these discoveries to be made at other experiments in the mid-1970s. Nevertheless, the construction of the ISR involved many advances in accelerator physics, including the first use of stochastic cooling, and it held the record for luminosity at a hadron collider until surpassed by the Tevatron in 2004.

The Large Electron–Positron Collider (LEP) was one of the largest particle accelerators ever constructed. It was built at CERN, a multi-national centre for research in nuclear and particle physics near Geneva, Switzerland. LEP collided electrons with positrons at energies that reached 209 GeV. It was a circular collider with a circumference of 27 kilometres built in a tunnel roughly 100 m (300 ft) underground and passing through Switzerland and France. LEP was used from 1989 until 2000. Around 2001 it was dismantled to make way for the Large Hadron Collider, which re-used the LEP tunnel. To date, LEP is the most powerful accelerator of leptons ever built.

The arrondissement of Gex is an arrondissement of France in the Ain department in the Auvergne-Rhône-Alpes region. It approximately corresponds to the historical region of the Pays de Gex. It has 27 communes. Its population is 93,027 (2016), and its area is 404.9 km2 (156.3 sq mi).

Sergy (French pronunciation: [sɛʁʒi]; Arpitan: Sèrgi) is a commune in the Ain department in eastern France.