Wednesday, January 01, 2014
Wednesday, December 25, 2013
The CMS experiment at the LHC has released a portion of its data to the public for use in education and outreach. Explore this page to find out more about the data and how to analyse it yourself.
LHC data are exotic, they are complicated and they are big. At peak performance, about one billion proton collisions take place every second inside the CMS detector at the LHC. CMS has collected around 64 petabytes (or over 64,000 terabytes) of analysable data from these collisions so far.
Along with the many published papers, these data constitute the scientific legacy of the CMS Collaboration, and preserving the data for future generations is of paramount importance. “We want to be able to re-analyse our data, even decades from now,” says Kati Lassila-Perini, head of the CMS Data Preservation and Open Access project at the Helsinki Institute of Physics. “We must make sure that we preserve not only the data but also the information on how to use them. To achieve this, we intend to make available through open access our data that are no longer under active analysis. This helps record the basic ingredients needed to guarantee that these data remain usable even when we are no longer working on them.” See: LHC data to be made public via open access initiative
Saturday, December 21, 2013
Gravitational waves have a polarization pattern that causes objects to expand in one direction, while contracting in the perpendicular direction. That is, they have spin two. This is because gravity waves are fluctuations in the tensorial metric of space-time.
How would you map this above?
|WMAP image of the Cosmic Microwave Background Radiation|
Here's the thing for those blog followers who are interested in the application of sound as a visual representation of an external world of senses.
In this example I’m going to map speed to the pitch of the note, length/postion to the duration of the note and number of turns/legs/puffs to the loudness of the note.See: How to make sound out of anything.
I have my reasons for looking at the trail that began with Gravitational wave research and development. If we are accustom to seeing and concreting all that reality has for us, can a question be raised in mind with how one has been shocked by an anomaly?
I am not asking for anyone to abandon their views on the science of, just respect that while not following the rules of science here as to my motivational underpinnings, I have asked if science can see gravity in ways that have not be thought of before. This is not to counter anything that has been done before.
The historic approach to Gravitational Research was important as well, to trace it back to it's beginning.
Can we use such measures to exemplify an understanding of the world we live according to a qualitative approach? This has occupied my thoughts back to when I first blogged about JosephWeber in 2005. Here is a 2000 article linked.
In the late 1950s, Weber became intrigued by the relationship between gravitational theory and laboratory experiments. His book, General Relativity and Gravitational Radiation, was published in 1961, and his paper describing how to build a gravitational wave detector first appeared in 1969. Weber's first detector consisted of a freely suspended aluminium cylinder weighing a few tonnes. In the late 1960s and early 1970s, Weber announced that he had recorded simultaneous oscillations in detectors 1000 km apart, waves he believed originated from an astrophysical event. Many physicists were sceptical about the results, but these early experiments initiated research into gravitational waves that is still ongoing. Current gravitational wave experiments, such as the Laser Interferometer Gravitational Wave Observatory (LIGO) and Laser Interferometer Space Antenna (LISA), are descendants of Weber's original work. See:Joseph Weber 1919 - 2000
Space, we all know what it looks like. We've been surrounded by images of space our whole lives, from the speculative images of science fiction to the inspirational visions of artists to the increasingly beautiful pictures made possible by complex technologies. But whilst we have an overwhelmingly vivid visual understanding of space, we have no sense of what space sounds like.
See previous entries on "Weber Bar" by typing in Search Feature on side bar. See also below.
Friday, September 20, 2013
Nima Arkani-Hamed on developments in Physics and future vision
The Salam Lecture Series 2012, with a week-long series of lectures by renowned theoretical physicist Nima Arkani-Hamed. Giving his audience a panoramic view of 400 years of physics in his first lecture, Arkani-Hamed provided insights into the various concepts that have dominated the world of fundamental physics at different points in history. "Everything that we have learned [over the past 400 years] can be subsumed with a basic slogan, and the slogan is that of unification," he said. "More and more disparate phenomena turn out to be different aspects of the same thing." "Physics," he stressed "forces you to remove artificial distinction between disciplines.
Thursday, May 16, 2013
|Neutrino Events-A compilation of some cool and unique neutrino events captured by the IceCube Neutrino Observatory.|
Tuesday, January 08, 2013
|A candidate event in the search for the Higgs boson, showing two electrons and two muons (Image: CMS/CERN)|
Tuesday, May 15, 2012
Tuesday, April 24, 2012
HiggsJetEnergyProfileCrotale and HiggsJetEnergyProfilePiano use only the energy of the cells in the jet to modulate the pitch, volume, duration and spatial position of each note. The sounds being modulated in these examples are crotales (baby cymbals) and a piano string struck with a soft beater, then shifted up in pitch by 1000 Hz and `dovetailed'.
Top quark and anti top quark pair decaying into jets, visible as collimated collections of particle tracks, and other fermions in the CDF detector at Tevatron.In HiggsJetRythSig we are simply travelling steadily along the axis of the jet of particles and hearing a ping of crotales for each point at which there is a significant energy deposit somewhere in the jet.
HiggsJetEnergyGate uses just the energy deposited in the jet's cells. At each time point (defined by the distance from the point of collision) the energy is used to define the number of channels used from the piano sound file. So high energy can be heard as thick, burbly sound whilst low energy has a thinner sound. See: Listen to the decay of a god particle
Tuesday, February 07, 2012
Friday, December 09, 2011
CERN PUBLIC SEMINAR
Tuesday, December 13, 2011 from to (Europe/Zurich)
at CERN ( Main Auditorium )
Tuesday, December 13, 2011
Tuesday, December 13, 2011 from to (Europe/Zurich)
at CERN ( Main Auditorium )
Tuesday, December 13, 2011
- 14:00 - 14:30 Update on the Standard Model Higgs searches in ATLAS 30'
Speaker: Fabiola Gianotti
- 14:30 - 15:00 Update on the Standard Model Higgs searches in CMS 30'
Speaker: Guido TONELLI
- 15:00 - 16:00 Joint question session 1h0'
- Article #1 on Standard Model Higgs: How It Is Produced at the LHC
- Fundamental Glossary For The Higgs Broadcast
- Higgs boson
Sunday, November 06, 2011
|Juggling magnetic fields to collide protons and lead|
Physicists at CERN's Large Hadron Collider (LHC) are analysing the results of their first attempt at colliding protons and lead ions. Further attempts at proton–lead collisions are expected over the next few weeks. If these trials are successful, a full-blown experimental programme could run in 2012.
Since the Geneva lab began experiments with the LHC in 2009, it has mostly been used to send two beams of protons in opposite directions around the 27 km accelerator, with the hope of spotting, among other things, the Higgs boson in the resulting collisions. Two beams of lead ions have also been smashed into each other in order to recreate the hot dense matter, known as a quark–gluon plasma, that was present in the early universe.
But to fully understand the results of such collisions, physicists need to know the properties of the lead ions before they collide. That is, their "cold state" before vast amounts of heat are released by the collisions. One way to do this, according to Urs Wiedemann at CERN, is to collide protons with lead ions.See:LHC trials proton–lead collisions
|A lead-ion collision as recorded by the CMS detector at the LHC. © CERN for the benefit of the CMS collaboration.|
The LHC has been smashing lead ions since Sunday, and physicists from the ALICE, ATLAS and CMS experiments are working around the clock to analyze the aftermath of these heavy-ion collisions at record energies and temperatures.* Last week we walked you through the process of creating, accelerating and colliding lead ions. Now we’ll talk about the big question: Why spend one month each year colliding heavy ions in the LHC?See:LHC basics: What we can learn from lead-ion collisions
Saturday, November 05, 2011
Just following up on ole news to keep abreast of what is going on with CERN.
LHC experiments present latest results at Mumbai conference
Geneva, 22 August 2011. Results from the ATLAS and CMS collaborations, presented at the biennial Lepton-Photon conference in Mumbai, India today, show that the elusive Higgs particle, if it exists, is running out of places to hide. Proving or disproving the existence the Higgs boson, which was postulated in the 1960s as part of a mechanism that would confer mass on fundamental particles, is among the main goals of the LHC scientific programme. ATLAS and CMS have excluded the existence of a Higgs over most of the mass region 145 to 466 GeV with 95 percent certainty.
As well as the Higgs search results, the LHC experiments will be presenting new results across a wide range of physics. Thanks to the outstanding performance of the LHC, the experiments and the Worldwide LHC Computing Grid, some of the current analyses are based on roughly twice the data sample presented at the last major particle physics conference in July.
The Latest Word on the Higgs from the Mumbai Conference
Restructured the post: My preliminary discussion is first, the updates from the talks are now at the end. The take-away message from the LHC talks: Conversations About Science with Theoretical Physicist Matt Strassler-Posted on August 22, 2011
Thursday, October 20, 2011
Fermilab scientist Don Lincoln describes the nature of the Higgs boson. Several large experimental groups are hot on the trail of this elusive subatomic particle which is thought to explain the origins of particle mass
See:Why does anything have substance? Hunting the Higgs boson
36 pb��1 of pp collision data recorded at ps = 7 TeV. The search is performed for associated
production of a lepton and an oppositely charged excited lepton pp ! `` ,
followed by the decay ` ! `g, resulting in the ``g final state, where ` = e, m. No
excess of events above the standard model expectation is observed. Interpreting the
findings in the context of ` production through four-fermion contact interactions and
subsequent decay via electroweak processes, first upper limits are reported for ` production
at this collision energy. The exclusion region in the compositeness scale L and
excited lepton mass M` parameter space is extended beyond previously established
limits. For L = M` , excited lepton masses are excluded below 1070 GeV/c2 for e
and 1090 GeV/c2 for m at the 95% confidence level.
See Also : Lepton fizz
Friday, October 14, 2011
Saturday, September 17, 2011
Thursday, August 11, 2011
|Credit: NASA/JSC, NASA|
During the 14-day mission, Endeavour delivered the Alpha Magnetic Spectrometer (AMS) and spare parts including two S-band communications antennas, a high-pressure gas tank and additional spare parts for Dextre. This was the 36th shuttle mission to the International Space Station. STS-134 Mission Information
July 31st, 2011In this video 16 years of preparation of AMS-02 become few blinks. The construction of AMS-02 is the result of a worldwide effort undertaken by scientists from 16 different countries who now started analyzing the wealth of data downlinked from the ISS, looking for new, unexpected phenomena.
For me, following the story "on land" by our own innovators to understanding the energy valuations outputs and the many tree designs as Feynman pathways of particulate expressions has been very interesting. The pathways are designated motivation-ally and expressively, to see and reveal the level of experimental verification needed in looking at the results for confirm hypothesis and theoretical expectations. Proposals on what we might find. In AMS case and in Fermi, we are counting these motivations from not only our sun , but from deep space as well.
See: BaBar: evidence for a charged Higgs boson
So in a sense should one also collaborate with what one can evaluate out in space with what one is evaluating on the ground with regard to Babar and LHC?
Any thoughts or opinions on that?
Thursday, July 21, 2011
Scientists of the CDF collaboration at the Department of Energy’s Fermi National Accelerator Laboratory announced the observation of a new particle, the neutral Xi-sub-b (Ξb0). This particle contains three quarks: a strange quark, an up quark and a bottom quark (s-u-b). While its existence was predicted by the Standard Model, the observation of the neutral Xi-sub-b is significant because it strengthens our understanding of how quarks form matter. Fermilab physicist Pat Lukens, a member of the CDF collaboration, presented the discovery at Fermilab on Wednesday, July 20. See: Fermilab experiment discovers a heavy relative of the neutron
|Six of the particles in the Standard Model are quarks (shown in purple). Each of the first three columns forms a generation of matter.|
Tuesday, February 22, 2011
The first results on supersymmetry from the Large Hadron Collider (LHC) have been analysed by physicists and some are suggesting that the theory may be in trouble. Data from proton collisions in both the Compact Muon Solenoid (CMS) and ATLAS experiments have shown no evidence for supersymmetric particles – or sparticles – that are predicted by this extension to the Standard Model of particle physics. Will the LHC find supersymmetry Kate McAlpine ?
Thank you Tommaso Dorigo
If such propositions are ever moved to the project of LHC confirmations then the ideals of those who proposed should never be conceived as rats as a commentator writes. It's just not polite.
I would comment at your blog article but like Cosmic Variance I have been blocked. Oh well:)
This information is a form of responsible action toward experimental fundamentalism we take as one moves forward.
Monday, March 29, 2010
Illustration: Sandbox Studio
The first round of physicsNine proposals are under consideration for the initial suite of physics experiments at DUSEL, and scientists have received $21 million in NSF funding to refine them. The proposals cover four areas of research:
In addition, scientists propose to build a generic underground facility (FAARM) that will monitor the mine's naturally occurring radioactivity, which can interfere with the search for dark matter. The facility also would measure particle emissions from various materials, and help develop and refine technologies for future underground physics experiments.
- What is the nature of dark matter? (Proposals for LZ3, COUPP, GEODM, and MAX)
- Are neutrinos their own antiparticles? (Majorana, EXO)
- How do stars create the heavy elements? (DIANA)
- What role did neutrinos play in the evolution of the universe? (LBNE)
But why are there four separate proposals for how to search for dark matter? Not knowing the nature of dark-matter particles and their interactions with ordinary matter, scientists would like to use a variety of detector materials to look for the particles and study their interactions with atoms of different sizes. The use of different technologies would also provide an independent cross check of the experimental results.
"We strongly feel we need two or more experiments," says Bernard Sadoulet of UC Berkeley, an expert on dark-matter searches. "If money were not an issue, you would build at least three experiments."
The largest experiment intended for DUSEL is the Long-Baseline Neutrino Experiment (see graphic), a project that involves both the DOE and NSF. Scientists would use the LBNE to explore whether neutrinos break one of the most fundamental laws of physics: the symmetry between matter and antimatter. In 1980, James Cronin and Val Fitch received the Nobel Prize for the observation that quarks can violate this symmetry. But the effect is too small to explain the dominance of matter over antimatter in our universe. Neutrinos might be the answer.
The LBNE scientists would generate a high-intensity neutrino beam at DOE's Fermi National Accelerator Laboratory, 800 miles east of Homestake, and aim it straight through the Earth at two or more enormous neutrino detectors in the DUSEL mine, each containing the equivalent of 100,000 tons of water.
Studies have shown that the rock at the 4850-foot level of the mine would support the safe construction of these caverns. In January, the LBNE experiment received first-stage approval, also known as Mission Need, from the DOE.
Lesko and his team now are combining all engineering studies and science proposals into an overall proposal for review.
"By the end of this summer, we hope to complete a preliminary design of the DUSEL facility and then integrate it with a generic suite of experiments," Lesko says. "While formal selection of the experiments will not have been made by that time, we know enough about them now that we can move forward with the preliminary design. The experiments themselves will be selected through a peer-review process, as is common in the NSF."
If all goes well, Lesko says, scientists and engineers could break ground on the major DUSEL excavations in 2013, marking the start of a new era for deep underground research in the United States. SEE:Big Plans for Deep Science