Sleepless Nights Lead to First Results of 2010...
Do you hear that? The incessant typing? The coffee machines vending cup after cup? If you go to Building 40, or Building 32, Building 188, or to any one of the many graduate student offices around the world, you will hear the tap of key boards, the whir of disk drives, and even the occasional heated civil discussions with "elevated" voices.
Blog | 6 June 2010
Conversations on Shift
When the detector is running smoothly, neighbors in the ATLAS control room sometimes get conversational. A few days back I was on shift, quietly looking at plots on the monitor in front of me, trying to decide if one small sensor was misbehaving or not. “I have a question,” the shifter next to me said.
Blog | 26 May 2010
A new record run
In the evening of Saturday May 15, we have reached a new peak luminosity record of 6 1028 cm-2s-1
Blog | 16 May 2010
Putting the Squeeze on the Protons
It took a little bit of time, but the wait was worth it. The LHC has successfully achieved its first physics run with "squeezed beams"!
Blog | 26 April 2010
One in a few million
ATLAS has been designed to detect rare events in high energy proton-proton collisions. ATLAS ultimate goal is to measure events as rare as one in several thousand billions, but we are modest (for the time being) waiting for the luminosity to rise.
Blog | 24 April 2010
Its All About The Lumi!
Now that the LHC has established colliding stable beams at a center of mass energy of 7 TeV, the next step to maximize its physics reach is to provide the most luminosity possible. As Leo posted, we need to increase the number of proton - proton collisions to make sure we have a chance of seeing the physics that we are looking for. The reason for that is because different p.hysics processes have different probabilities. These probabilities are referred to as cross-sections (in a vague reference to the particle's size). If one multiplies a cross section by a luminosity than what you get is a number of events.
Blog | 6 April 2010
Life Imitating Reality
I was home sick today, probably from the stress of getting ready for "M-Day" (aka Media Day), more likely though I finally succumbed to the cold that had been spreading through the Control Room. As it so happened, my laptop had been in the shop because it experience an "incident" (actually I just dropped it) last Monday (the week before Media Day), and I just picked it up yesterday.
Blog | 2 April 2010
Increasing collision rate
Many collisions will be needed to unveil the secrets eventually hidden at the 7 TeV energy regime.
Blog | 1 April 2010
Let The Physics Begin!
After decades of planning. After years of delays and immeasureable amounts of patience and hard work. The physics operations of the LHC has begun!
First 7 Tev collisions have been recorded in ATLAS
After ramping of the beams to 3.5 TeV and tuning, final checks, and some emotions due to an unforeseen beam dump, the 7 TeV collisions finally appeared on the on-line monitors of the ATLAS Control Room.
Expecting beam in 30 minutes!
During this morning LHC has been working to give us the beam conditions for collisions.
How will it happen?
So how will this whole "First 7 TeV Collisions" event happen? Well, here is my (somewhat naive) understanding of what will happen.
Blog | 28 March 2010
Approaching the End...and a New Beginning
This Tuesday, if all goes according to plan, will mark the end of a very long journey for many High Energy Physicists. The first 7 TeV Collisions will signal the end of the the commissioning period of the LHC and its experiments.
Blog | 28 March 2010
Big step forward in LHC operation last night
Last night a new very important milestone has been reached by the LHC: two counter-circulating proton beams have been accelerated for the first time to 3.5 TeV, the energy that they should routinely reach in the 2010-2011 running period.
Blog | 19 March 2010
3 Firsts for ATLAS in 2010
It has been a BUSY weekend! The LHC has been working around the clock get the machine commissioned, and ATLAS has been enjoying the many Firsts that have resulted.
Blog | 15 March 2010
ATLAS celebrating the International Women's day!
Today ATLAS celebrates the role of women in physics its own way. ATLAS has encouraged its staff and users to place as many women as possible on shift in the control room and to serve as guides for official visits.
Blog | 8 March 2010
A titan awakes
At approximately 2:40 am Central European Time, ATLAS saw particles from the LHC for the first time in 2010. As in previous LHC turn-on periods the first thing we see are beam splashes from the LHC beams as they slowly thread the beam through the LHC ring for the first time.
Blog | 1 March 2010
The calm before the storm
The Control Room is quiet. The configurations are set. The trigger menu is uploaded. The shifters are ready. All that is left is for the LHC to deliver beam.
Blog | 27 February 2010
Gearing-up for the 2010 run!
ATLAS has been taking cosmic rays data this month exercising new features of the data acquisition, including protocols to start and control the run.
Blog | 25 February 2010
First Integrated Run in 2010
Today ATLAS has started the integrated runs. This has happened before, nevertheless this is the first time ATLAS subdetectors get together after the winter break, a lot of work has been done since then.
Blog | 2 February 2010
All Bunched Up!
High Energy Physicists have been waiting for many years to see the LHC turn on. Now that it has been turned on, the network of physicists around the world have quickly been harnessed. It can be considered a phase transition in particle physics.
Blog | 6 January 2010
Just a taste
At 21:32 pm on December 8th, the LHC did something that no other accelerator has ever done before.
Blog | 11 December 2009
ATLAS increases its active channel count by one order of magnitude
On Sunday December 6, 2009 at 8.00 the ATLAS Pixel Detector has measured, for the first time, tracks emerging from LHC collisions. It has been a very smooth start.
Blog | 11 December 2009
First collisions with the pixel detector
It's been a busy weekend for ATLAS. Last night, well, actually early this morning, we received the "stable beam" flag from the LHC.
Blog | 7 December 2009