Deep Dive
The Antimatter Factory
CERN's antimatter factory accelerates protons to near light speed, smashing them into iridium to produce antiprotons. Despite producing 40 million antiprotons every couple of minutes, storing them is a challenge. Antimatter is the most expensive substance, costing over $100 trillion per gram. The factory aims to solve the universe's matter-antimatter asymmetry.
Historical Context and Discovery
Paul Dirac's equation predicted antimatter, leading to the discovery of the positron. Antimatter annihilates with matter, converting mass into energy. The universe's matter dominance suggests a tiny asymmetry, a mystery physicists aim to solve. Theories like CPT symmetry are crucial, and experiments at CERN continue to test these ideas.
Antimatter Experiments
CERN's experiments include testing antimatter's mass and magnetic moment. The Penning trap allows for precise measurements. Antimatter's gravitational behavior is tested to see if it differs from matter. While ALPHA-g found antimatter falls down, GBAR aims for more precision, hoping to measure gravitational effects with unprecedented accuracy.
Portable Antimatter and Future Prospects
CERN developed a portable antimatter trap, storing antiprotons for up to 614 days. This innovation could distribute antimatter globally for research. While practical applications are far off, the potential for new physics is significant. The factory's output is minuscule, highlighting the challenge of producing substantial antimatter quantities.