60 questions · 39 sources · 0 syntheses
Particle Accelerators and Detectors
Machines and instruments used to probe subatomic particles.
Source-derived questions
Questions extracted from the papers in this topic, excluding the curated questions above.
- How did Alvarez's liquid-hydrogen bubble chambers make the tracks of subatomic particles visible and measurable?
- How did Bartoš and colleagues test the same-side coin-flip bias at a scale large enough to confirm it?
- How did Blackett get a cloud chamber to photograph only the moments worth capturing?
- How did CERN's 1983 discovery of the W and Z bosons confirm the theory?
- How did Carl Anderson confirm the positron experimentally in 1932?
- How did Carl Anderson recognize the positron from the way its track curved in a cloud chamber?
- How did Carlo Rubbia and Simon van der Meer use proton-antiproton collisions at the CERN Super Proton Synchrotron to find the W and Z bosons?
- How did Cockcroft and Walton's accelerator split a lithium nucleus using a beam of protons?
- How did Frederick Reines and Clyde Cowan manage to detect a particle that barely interacts with anything?
- How did Georges Charpak's multiwire proportional chamber work?
- How did Lederman, Schwartz, and Steinberger manage to create a directed beam out of particles that barely interact with anything?
- How did Segrè and Chamberlain use the Bevatron to distinguish antiprotons from the flood of ordinary collision debris?
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- How did bombarding uranium-238 with deuterons in a cyclotron produce a brand-new element?
- How did photographic emulsions work as a particle detector?
- How did the ATLAS and CMS collaborations confirm the Higgs boson with 5-sigma confidence?
- How did the curvature of a cloud chamber track reveal that Anderson had found a positively charged, lightweight particle?
- How did the curvature of the mystery particle's track in a magnetic field rule out both a proton and an electron?
- How does Walther Bothe's coincidence method let experimenters tell which particle detections belong to the same event?
- How does a cloud chamber make the path of a charged particle visible?
- How does a superheated liquid reveal the path of a charged particle passing through it?
- How does bending a particle's path into a spiral let it reach higher speeds without a longer machine?
- How does stochastic cooling let physicists corral a chaotic beam of antiprotons without touching any individual particle?
- How large is the collaboration behind the LHC experiments, and what does that scale of coordination require?
- How long did repairs from the 2008 helium leak keep the LHC out of commission?
- How many years passed between Higgs's 1964 paper and the experimental confirmation of the Higgs boson at the LHC?
- What chain of events, starting with a faulty electrical connection, caused the LHC to shut down just nine days after its first beam?
- What device did Cockcroft and Walton build to accelerate protons to high enough voltage to split a nucleus?
- What did Cronin and Fitch observe in neutral kaon decays at Brookhaven that violated CP symmetry?
- What did Tim Berners-Lee's original 1989 proposal at CERN describe, and how was it received?
- What did it mean for Dehmelt to photograph a single barium ion with the naked eye?
- What did the SLAC experiments observe when electrons bounced backward off protons, and why did that rule out a smooth proton?
- What did the bump at 125 GeV in the LHC data actually show physicists?
- What discoveries did the ATLAS, CMS, ALICE, and LHCb collaborations at the LHC contribute to over their cumulative history?
- What earlier discovery had the cloud chamber already enabled before Blackett's improvement?
- What experimental evidence at SLAC in the late 1960s confirmed that quarks were physically real?
- What in Martin Perl's SLAC data pointed to a completely new charged lepton rather than an error in the apparatus?
- What institutional memory problem at CERN was Berners-Lee actually trying to solve with his 1989 proposal?
- What is stochastic cooling, and why was it necessary to make the antiproton beam usable?
- What is the real origin story behind Glaser's bubble chamber, and how does it differ from the beer-glass legend?
- What later collider experiments relied on designs descended from Charpak's chamber?
- What made the W and Z boson mass predictions such a bold bet for the theory?
- What major discovery did the LHC make once it returned to operation in 2009?
- What medical treatments eventually grew out of the cyclotron's ability to produce particle beams?
- What new particles did bubble chambers make it possible to discover through the 1960s and 70s?
- What other scientific fields ended up using emulsion-based particle tracking?
- What role did Barry Barish play that Weiss and Thorne, as theorists, could not have played themselves?
- What role did Geiger counters play in triggering the camera shutter?
- Which animals did Charles Foster attempt to live as, and how did he adapt his behavior for each?
- Why couldn't quarks simply be seen directly in a detector, and what had to be inferred instead?
- Why did Cockcroft and Walton's earlier attempts at building an accelerator fail before their 1932 success?
- Why did accelerating particles in a straight line become impractical for physicists in the early 20th century?
- Why did confirming the existence of the Higgs boson take forty-eight years and require the Large Hadron Collider?
- Why did it take nearly fifty years and a seventeen-mile collider to confirm the Higgs boson?
- Why did it take two decades after its prediction to actually find the top quark?
- Why did the cloud chamber's supersaturated vapour struggle to keep up with the particles physicists wanted to study?
- Why was Wilson's cloud chamber so important for physics after 1927?
- Why was accumulating antiprotons in useful quantities considered nearly impossible before van der Meer's technique?
- Why was lawrencium named after Ernest Lawrence, and what was his connection to the laboratory that synthesized it?
- Why was the Bevatron accelerator specifically designed with the antiproton's energy threshold in mind?
- Why were bubble chambers inadequate for the particle rates that colliders were reaching?
Sources
- Antiproton discovered at the Bevatron
- Breakthrough Prize in Fundamental Physics
- CP violation discovered in neutral kaon decays
- Death of Peter Higgs
- Discovery of the Higgs boson
- Discovery of the W and Z bosons at CERN
- Discovery of the positron
- First artificial nuclear transmutation
- Higgs mechanism proposed
- Ig Nobel Prize in Biology
- Ig Nobel Prize in Probability
- LHC circulates first proton beam
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- Muon confirmed in cosmic ray interactions
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Nobel Prize in Physics
- Quark model proposed independently by Gell-Mann and Zweig
- Synthesis of lawrencium, element 103
- Synthesis of plutonium
- Tim Berners-Lee proposes the World Wide Web at CERN
- Top quark discovered at Fermilab
- World Wide Web goes public