Meet ALICE from CERN

ALICE (A Large Ion Collider Experiment) is a detector dedicated to heavy-ion physics at the Large Hadron Collider (LHC). It is designed to study the physics of strongly interacting matter at extreme energy densities, where a phase of matter called quark-gluon plasma forms.

All ordinary matter in today’s universe is made up of atoms. Each atom contains a nucleus composed of protons and neutrons (except hydrogen, which has no neutrons), surrounded by a cloud of electrons. Protons and neutrons are in turn made of quarks bound together by other particles called gluons. No quark has ever been observed in isolation: the quarks, as well as the gluons, seem to be bound permanently together and confined inside composite particles, such as protons and neutrons. This is known as confinement.

Collisions in the LHC generate temperatures more than 100 000 times hotter than the centre of the Sun. For part of each year the LHC provides collisions between lead ions, recreating in the laboratory conditions similar to those just after the Big Bang. Under these extreme conditions, protons and neutrons “melt”, freeing the quarks from their bonds with the gluons. This is quark-gluon plasma. The existence of such a phase and its properties are key issues in the theory of quantum chromodynamics (QCD), for understanding the phenomenon of confinement, and for a physics problem called chiral-symmetry restoration. The ALICE collaboration studies the quark-gluon plasma as it expands and cools, observing how it progressively gives rise to the particles that constitute the matter of our universe today.

The ALICE collaboration uses the 10 000-tonne ALICE detector – 26 m long, 16 m high, and 16 m wide – to study quark-gluon plasma. The detector sits in a vast cavern 56 m below ground close to the village of St Genis-Pouilly in France, receiving beams from the LHC.

ALICE’s dark side

30 October 2020

Precision measurements of the production and annihilation of light antinuclei at the LHC’s ALICE experiment are sharpening the search for dark matter.

The nature of dark matter (DM) remains one of the most intriguing unsolved questions of modern physics. Astrophysical and cosmological observations suggest that DM accounts for roughly 27% of the mass-energy of the universe, with dark energy comprising 68% and ordinary baryonic matter as described by the Standard Model accounting for a paltry 5%. This massive hole in our understanding of the universe continues to drive multiple experimental searches for DM both in the laboratory and in space. No clear evidence for DM has yet been found, severely constraining the parameter space of the most popular “thermal” DM models.

Assuming DM is a material substance comprised of particles – not an illusion resulting from an imperfect understanding of gravity – there are three independent ways to search for it. One is to directly measure the….. Read More:

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Down the Rabbit Hole at the World’s Largest Particle Collider

Ahead of the V&A’s landmark Alice in Wonderland exhibition, Louise Benson takes a rare visit to Cern and explores the surprising connection between Lewis Carroll’s story and quantum physics.

Alice finds herself grappling with the building blocks of her own existence as she shrinks and grows at the bite of a mushroom”

Carroll was not just a children’s author. Also a mathematician at Christ Church, Oxford, his narration of Alice’s epic journey through a series of surreal challenges frequently contends with the rules of logic and speculation. As Alice shrinks while falling down the rabbit hole, she questions the mathematical limits of her own transformation; at the infamous tea party, a debate over the concept of converse relation is playfully argued. “Have I gone mad?” Alice asks later in the book. “I’m afraid so,” the Mad Hatter informs her. “You’re entirely bonkers. But I will tell you a secret: all the best people are.”

More CERN information

CIA numerology and symbology

🔻 In deciphering the names and symbols associated with the CERN and CIA¹ headquarters below Lake Geneva, a clearer and more precise understanding of these organizations and their respective agendas emerges. As the letter “A” doubles as the chevron symbol (i.e. “Ʌ”), the number/letter used to represent the letters “C” and “K” in the Roman score, the acronym¹ “CIA” corresponds to “CIɅ”². Which can be represented in 9 different ways (i.e. CIC, CIK, KIC, CIɅ, ɅIC, KIɅ, ɅIK, ɅIɅ). The double Ʌ, C or K are grammatical and numerological¹ homages² to Chania, Crete, the birthplace of the Greco-Roman¹ empire² that now rules the world via Greenland via CIA¹ headquarters.