Search found 67 matches
- Thu Jul 07, 2016 12:32 pm
- Forum: The Accelerator
- Topic: 2016 operation
- Replies: 52
- Views: 89564
Re: 2016 operation
Beware of wild extrapolations!
- Thu Jun 11, 2015 8:46 pm
- Forum: New Users Start Here
- Topic: Hello from Canada
- Replies: 3
- Views: 7798
Re: Hello from Canada
Good day! I've been following the LHC experiments for a few years. I've been patiently waiting for the higher energy collision experiments to begin, and highly anticipate their results. I wish I could be part of this in some way. Becoming a physicist wasn't even in the vocabulary of my school when ...
- Tue Apr 28, 2015 6:58 pm
- Forum: The Accelerator
- Topic: What is AGK
- Replies: 3
- Views: 8639
Re: What is AGK
Hardwired in the sense that it cannot easily be changed - we are, after all talking about a timing synchronization system at the ns level. It is an integral part of the injection and dump system and is mostly implemented in analog electronics
- Mon Apr 27, 2015 7:27 pm
- Forum: The Accelerator
- Topic: What is AGK
- Replies: 3
- Views: 8639
Re: What is AGK
You answered it yourself: AGK = Abort Gap Keeper. Is is a hardwired part of the beam dump system to ensure that beam is not injected into the abort gap. The abort gap is a region in time where there is a gap in the beam to allow the beam dump kickers to rise to their full field in order to extract t...
- Sun Apr 26, 2015 7:41 pm
- Forum: The Accelerator
- Topic: What is a BSRI?
- Replies: 2
- Views: 7195
Re: What is a BSRI?
It stands for Beam Synchrotron Radiation Interferometry. Is is a test set-up to extract the beam size from the BSRT light without some of the inherent errors in the normal system.
- Mon Apr 06, 2015 5:22 pm
- Forum: The Accelerator
- Topic: 2014 machine commissioning and 2015 start up
- Replies: 59
- Views: 159380
Re: 2014 machine commissioning and 2015 start up
That's very gracious of you, considering how busy you are (and all you guys and gals working on bring-up are heroes by the way!). So here's one: what guarantees that the orbital tune set-up at 0.45 TeV will work at higher energies? It won't - not perfectly anyway. We use feed farward - ie go up the...
- Mon Apr 06, 2015 3:24 pm
- Forum: The Accelerator
- Topic: 2014 machine commissioning and 2015 start up
- Replies: 59
- Views: 159380
Re: 2014 machine commissioning and 2015 start up
That's the problem - I had no idea that 8 weeks was a minimum ! I would love to be able to come along for the ride and watch this great beast rise up again, but I have no real insight into what's being done nor what to expect. This despite having a physics degree! I suspect many would enjoy coming ...
- Sun Apr 05, 2015 7:04 pm
- Forum: The Accelerator
- Topic: 2014 machine commissioning and 2015 start up
- Replies: 59
- Views: 159380
Re: 2014 machine commissioning and 2015 start up
But the good news is that these 8 weeks are going to be very exciting! In a way, they're more interesting than the production runs. I love it see how they manage to learn from every measurement (and every mistake) they make. One example is how they handled the earth fault in sector 23: it must have...
- Sun Apr 05, 2015 4:41 pm
- Forum: The Accelerator
- Topic: 2014 machine commissioning and 2015 start up
- Replies: 59
- Views: 159380
Re: 2014 machine commissioning and 2015 start up
After today's excitement, I'm disappointed that we have to wait 8 weeks more to see collisions at 13 TeV. This conservative schedule seems to be largely about safety concerns. Have you any idea what is involved in re-commissioning the LHC for operation? 8 weeks is optimistic if everything goes to p...
- Tue Mar 31, 2015 6:09 pm
- Forum: The Accelerator
- Topic: 2014 machine commissioning and 2015 start up
- Replies: 59
- Views: 159380
Re: 2014 machine commissioning and 2015 start up
Yes ... seeandrewp wrote:Indeed they did succeed. Beam to follow!
http://home.web.cern.ch/about/updates/2 ... back-track
- Fri Mar 20, 2015 8:54 pm
- Forum: The Accelerator
- Topic: 2014 machine commissioning and 2015 start up
- Replies: 59
- Views: 159380
Re: 2014 machine commissioning and 2015 start up
It is not a question of quality. All the magnets are of very high quality! However, some of them seem to be a bit forgetful when it comes to their training ... we have to send them to refresher courses. During the cold-testing at the time of LHC construction the Firm3 magnets tended to have a first ...
Re: FCC
Cosmic rays tend to interact with atoms in the upper atmosphere. These primary interactions are not directly seen on the earths surface. Instead it is the secondary showers of particles from the primary collision that eventually appear in the detectors. The advantage of accelerator based collisions ...
- Fri Feb 21, 2014 7:48 pm
- Forum: The Accelerator
- Topic: Son of LHC
- Replies: 1
- Views: 5563
Re: Son of LHC
It is a little more complex than that ... but not much. :mrgreen: We study both lepton and hadron versions. The lepton version is dominated by synchrotron radiation considerations and therefore RF accelerating voltage. The hadron version is dominated by our ability to bend the beams and therefore ma...
Re: FCC
Have a look at the presentations ... and follow over the next 5 years as we elaborate the concept.
It is exciting !!!
It is exciting !!!
Re: FCC
Having said that ... it won't be a piece of cake either! A lot of technologies will need to be pushed to make it realistic and affordable.