EXPERIMENTAL CYCLE

ALPHA is not just one apparatus. The apparatus consists of different sub-elements, which are all produced and maintained by experts from around the world. At CERN we then rebuild these components and make the whole experiment work together.

ALPHA Apparatus Overview

1. Get Antiprotons

Related physics: Antimatter, Antiproton
Related equipment: AD

2. Get positrons

Related physics: Antimatter, Positron
Related equipment: Sodium source, Positron accumulator
3. Catch antiprotons

Related physics: Penning Trap
Related equipment: Catching Trap, Penning Trap

4. Cool and compress antiprotons

(with electrons)
Related physics: Plasma physics, electron cooling, rotating wall, evaporative cooling, SDREVC (rotating wall with evaporative cooling)
Related equipment: Penning Trap

5. Compress and cool positrons

Related physics: Plasma physics, evaporative cooling, sympathetic cooling (Be+), Laser cooling
Related equipment: Beryllium source, Beryllium ablation laser, Beryllium cooling laser

6a. Measure plasma size or temperature or particle count

Related physics: MCP, Detectors, Faraday cup
Related equipment: MCP, Detectors, Faraday cup
(Destructive step… so start over!)

6b. Mixing (synthesis of antihydrogen)

Related physics: Antihydrogen, Mixing
Related equipment: Atom trap

7. Store antihydrogen

Related physics: Antihydrogen, loffe-pritchard trap
Related equipment: Atom trap

8. Interact with antihydrogen

Time to perform an experiment!
Related physics: LyALPHA Laser,  243nm-Laser, Microwaves, Gravity Measurements, Charge of antihydrogen
Related equipment: LyALPHA Laser,  243nm-Laser, Microwave generator

9. Detect antihydrogen losses

Related physics: Annihilation, Detectors
Related equipment: SVC, TPC

10. Release antihydrogen

Turn of the atom trap to see what’s left over
Related physics: Annihilation, Detectors
Related equipment: SVC, TPC, Atom Trap