LHC successfully collides Beams at 7 TeV last night

aarie

LHC successfully collides Beams at 7 TeV todayTopic: Technology NewsPosted on Tue, 30 Mar 2010 07:20:56 CDT | by Luigi Lugmayr

The LHC (Large Hadron Collider) at CERN has started to collide beams at the super high 7 TeV energy level today for the first time at 13:06 CEST.
The LHC team started this morning at 8:30am colliding beams. There havebeen some delays and failed attempts, but now stable beams collide andthe First Physics project is under way. Particle physicists around theworld are looking forward to a potentially rich harvest of new physicsas the LHC begins its first long run at an energy three and a halftimes higher than previously achieved at a particle accelerator.

CERN will run the LHC for 18-24 months with the objective ofdelivering enough data to the experiments to make significant advancesacross a wide range of physics channels. As soon as they have"re-discovered" the known Standard Model particles, a necessaryprecursor to looking for new physics, the LHC experiments will startthe systematic search for the Higgs boson. With the amount of dataexpected, called one inverse femtobarn by physicists, the combinedanalysis of ATLAS and CMS will be able to explore a wide mass range,and there’s even a chance of discovery if the Higgs has a mass near 160GeV. If it’s much lighter or very heavy, it will be harder to find inthis first LHC run.

For supersymmetry, ATLAS and CMS will each have enough data todouble today’s sensitivity to certain new discoveries. Experimentstoday are sensitive to some supersymmetric particles with masses up to400 GeV. An inverse femtobarn at the LHC pushes the discovery range upto 800 GeV.
More details on the CERN site.

mbhcsf

hmm...higgs boson anyone > aper tuuu..sedap nama ni ..
lagi satu
inverse femtobarn - unit apa ni>  kuantiti physic aper yer dia ukur

aarie

2# mbhcsf

higgs boson... hypothetical particle/s to complete the Standard Model mathematical equation..
yg sumer orang dok cari sekarang.... lagi 2-3 tahun baru bleh confirm kot...

inverse femtobarn... indirect measurement of particles collisions event per femtobarn
( an area about the size of a uranium nucleus).... reflect effectiveness of the collider.

lin0me

LHC successfully collides Beams at 7 TeV todayTopic: Technology NewsPosted on Tue, 30 Mar 2010 07:20:56 CDT | by Luigi Lugmayr

The LHC (Large Hadron Collider) at CERN has started to collide beams a ...
aarie Post at 31-3-2010 10:42

errrr..jap nak comfirm..ni ker yg experiment yg dulu ada org protes suruh hentikan??sbb dikatakan dah mencabar kuasa tuhan??
kalau betul lah,ingatkan memang dah kena berhenti dah experiment ni,rupa rupanya ada gi..

aarie

Antimatter captured and studied for first time

NEWSCORE
Last Updated: 8:58 AM, November 18, 2010

Antimatter -- the opposite of conventional matter -- has been captured and studied for the first time,
scientists confirmed Thursday.

Researchers at the Large Hadron Collider (LHC) at CERN -- the European nuclear research center in
Geneva -- used strong magnetic fields to trap a total of 38 anti-hydrogen atoms for a record 0.166 of
a second. Antimatter -- a science fiction staple -- is usually instantly annihilated when it comes into
contact with ordinary matter.

“We’ve been able to trap about 38 atoms, which is an incredibly small amount, nothing like what we
would need to power "Star Trek"’s starship Enterprise or even to heat a cup of coffee,” said Rob Thompson,
head of physics and astronomy at the University of Calgary, and an investigator on the Alpha project.

However, he added that the small volume of antimatter did not diminish the significance of the achievement.
“It could enable experiments that result in dramatic changes to the current view of fundamental physics or
in confirmation of what we already know,” he said.


www.nypost.com

aarie

an article published more than 20 years ago.....

Antimatter matters

Publication: The Futurist                 Date: Monday, May 1 1989

Antimatter fuel allowed 1960s science-fiction starships to boldly go where no man had gone before,
but scientist today are convinced that antimatter--specifically, the antiproton--may offer a viable
technology for the future.

Antimatter is the mirror image of matter. As far as scientist now know, it only exists on the subatomic
level. The antimatter counterparts of subatomic particles--protons, neutrons, and electrons--differ from
normal particles in their electrical charge and in the direction of their spin. As a recent RAND Corporation
report explains, "Where protons have a positive electrical charge and spin in one direction, antiprotons
are negatively charged and spin the other way."

Scientist hope to be able to create and capture antimatter, because when matter and antimatter
collide an immense amount of energy is produced.

"When a particle and its antimatter twin are brought into contact, the two annihilate each other
and their combined mass is converted into energy in accordance with Einstein's formula, E=mc(2)
(that is, energy is equal to mass times the speed of light, squared)," explains RAND, reporting on
the results of a workshop on antiproton science and technology. "One gram of antimatter therefore
contains an energy content of about six megawatt years. It is this total conversion of mass into
energy that makes antimatter the ultimate potential source of power."

Antiprotons could be used as a highly efficient rocket fuel. Just 10 milligrams of antimatter--the
volume of a grain of salt--has propulsive energy equal to 200 metric tons of chemical fluid.

Antiprotons are also being contemplated in cancer treatment. In radiation therapy now used, X-rays
destroy the DNA in tumor cells. But since the beams travel through healthy tissue to get to the cancer,
X-rays can damage healthy cells. Antiprotons would allow more-precise targeting and, due to the speed at
which energy is released and escapes from the body, would minimize damage to healthy tissue surrounding
the tumor.

Antimatter is already used in medicine, such as the medical-imaging technique of positron emission
tomography (PET scans). Positrons are the antimatter counterparts of electrons. Antiprotons, too, have
potential applications in imaging, such as in nondestructive detection of flaws in industrial materials. And,
because of the heat generated during the matter-antimatter collision, the material could be heated
up and the flaw eliminated.

Before any of these antimatter applications becomes viable, RAND notes, there are many obstacles
to overcome, such as the costs. A gram of antimatter would cost at least $1 billion to produce.

Another problem is to develop portable storage devices. Two posibilities on the horizon are
superconducting storage rings and ion-trap "vacuum bottles." Storage devices are considered a critical
"enabling tool" for antiproton research, as they would allow the antimatter produced at a source facility
to be transported to academic, government, and industrial laboratories conducting the experiments.

"With 'modest additions' to the existing particle physics centers at either Brookhaven National
Laboratory on Long Island or Fermilab in Chicago,... a sufficient quantity of low-energy antiprotons
could be produced during the next decade to support a wide-ranging program of fundamental and applied
research," RAND concludes. "How much is enough? About 10(14) to 10(15) antiprotons per year--an
amount occupying 30,000 times less space than the period at the end of this sentence."


there are already more than 30 proton therapy centre all over the world.. but antiproton.. hmmmmmm...
PET-CT is already used in Malaysia for cancer screening......