The field is hiring.

Accelerator physics

Making antiprotons, and slowing them by a factor of ten billion in energy.

Non-neutral plasma physics

Holding large clouds of a single charge without losing them to the walls.

Extreme-high vacuum

One stray gas molecule ends an antiproton. Traps run below what gauges can read.

Cryogenics

Traps sit at four kelvin and below, which also pumps the last gas away.

Superconducting magnets

Penning traps and antihydrogen traps both depend on strong, stable fields.

Precision high voltage

Electrode potentials shape the trap; noise on them heats what it holds.

Detectors and nuclear measurement

Annihilations are the signal. Seeing them precisely is half of every experiment.

Monte Carlo and scientific computing

Radiation transport, trap dynamics and design studies run in simulation first.

• ALPHATrap antihydrogen and compare its spectrum and its response to gravity with those of hydrogen, testing CPT symmetry and the weak equivalence principle.
• AEgISMeasure Earth's gravitational acceleration on a pulsed, horizontally travelling beam of antihydrogen with a moiré deflectometer, aiming for 1% precision.
• GBARTime the free fall of ultracold antihydrogen, obtained by cooling and photodetaching positive antihydrogen ions, to test the weak equivalence principle.
• ASACUSATest CPT symmetry by laser spectroscopy of antiprotonic helium and in-flight hyperfine spectroscopy of an antihydrogen beam, and study antiproton collisions with atoms.
• BASECompare the magnetic moments and charge-to-mass ratios of protons and antiprotons in cryogenic Penning traps to test CPT invariance in the baryon sector.
• BASE-STEPMove trapped antiprotons by road from CERN's Antimatter Factory to low-noise laboratories, where CPT tests at least 100 times more precise should be possible.
• AMS-02Measure charged cosmic rays above the atmosphere with particle-physics precision to search for antimatter and dark-matter signatures and to trace the origin of cosmic rays.
• ALICEStudy strongly interacting matter at extreme energy densities in LHC collisions, including measuring how light antinuclei and antihypernuclei form, interact and compare with their matter partners.
• LHCbMeasure the small differences between matter and antimatter, chiefly CP violation in decays of hadrons containing beauty and charm quarks.
• T2KCompare neutrino and antineutrino oscillations to determine whether leptons violate CP symmetry, a possible source of the universe's matter–antimatter imbalance.
• GAPSSearch for low-energy cosmic-ray antideuterons and antihelium, and measure low-energy antiprotons, as signatures of dark matter.

CERN's own openings, including fellowships and student programmes, are listed at careers.cern.