Search found 34 matches

by Tau 2
Tue May 12, 2015 8:35 am
Forum: New Users Start Here
Topic: Hi dear people!
Replies: 3
Views: 1162

Re: Hi dear people!

don`t believe the rumors but check it yourself. Liking your attitude already. :) Current status is that they are trying to set up everything to do some serious physics, but the last few days everything seems to cooperate against them: all kinds of different mechanical parts of different things seem...
by Tau 2
Fri May 08, 2015 4:52 am
Forum: End Of The World
Topic: The CERN safety study
Replies: 54
Views: 29181

Re: The CERN safety study

chelle wrote:In that case, the energy available in the collision is the geometric mean of the beam (UHECR) energy and the target mass.
Geometric mean? :rolleyes: Where does that come from? Sounds really strange to me.
by Tau 2
Thu Apr 30, 2015 4:48 pm
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 4770

Re: MUFO?

Apparently they decided the ULO is not big enough to hinder beam operation. The only thing that can go wrong is that it will cause so much radiation when touched that it will quench the magnet it is in, but that appears not to happen with the beams they tried until now. As a precaution, they steer t...
by Tau 2
Fri Apr 24, 2015 6:10 am
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 4770

Re: MUFO?

Latest news: I concluded that if they touched the beam when steering 6 mm down, the object would be there, butI forgot to take the thickness of the beam into account. The official position of the object is: horizontally in the middle, vertically 9.6 mm below beam centre (which is about 8 mm high, co...
by Tau 2
Wed Apr 22, 2015 7:09 pm
Forum: The Accelerator
Topic: What is a BSRI?
Replies: 2
Views: 1111

What is a BSRI?

Ladies and gentlemen, Does anybody know what a BSRI is for? I figured out the following: From the pictures in the Elogbook, it appears to be a device that splits a beam through two slits and makes pictures of the interference pattern. It looks like it operates on light (it says lambda=560 nm, which ...
by Tau 2
Wed Apr 22, 2015 6:55 pm
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 4770

Re: MUFO?

chelle wrote:It's 'Lying' without an a :dance:
I thought that meant "not speaking the truth".
Wonder how you spell that, then.
by Tau 2
Wed Apr 22, 2015 4:38 pm
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 4770

Re: MUFO?

The latest news is that they tried to scrape the ULO with a "nominal" beam, that is a single bunch of about 100 billion protons in this case. This resulted in the ULO being 1 mm lower, so it is now 6 mm under the center of the tube. This might be enough. :shifty: What happened the last few days is m...
by Tau 2
Wed Apr 22, 2015 4:25 pm
Forum: The Accelerator
Topic: 2014 machine commissioning and 2015 start up
Replies: 59
Views: 57091

Re: 2014 machine commissioning and 2015 start up

It might be not so bad. I see no plans to stop the operations (yet).
For details, see the thread "MUFO?"
by Tau 2
Wed Apr 22, 2015 4:23 pm
Forum: New Users Start Here
Topic: New User
Replies: 2
Views: 829

Re: New User

Glad to see new faces around here; it was terribly silent lately.
And I spent so much time figuring out details and posting them :D
by Tau 2
Tue Apr 21, 2015 10:16 am
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 4770

Re: MUFO?

I just read that they named it, in their typical CERN way, an ULO (Unidentified Laying Object). :lol:
by Tau 2
Mon Apr 20, 2015 5:16 pm
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 4770

Re: MUFO?

Well, the good news is that is seems to be gone. It might be that heating the beam screen solved the problem: it hasn't been seen since, even though they sent the beam right next to the probable source, as far left, right, down and up (in that order) as they could: no more MUFOs. But it also might b...
by Tau 2
Sat Apr 18, 2015 3:19 pm
Forum: The Accelerator
Topic: MUFO?
Replies: 20
Views: 4770

Re: MUFO?

What is a MUFO? A microUFO? I can't find MUFO or UFO in the acronym list. Quite the contrary, It is a Mega UFO. The first mention of it was in the morning meeting on Tuesday 14 March: Comparison to UFO-Model Preliminary analysis indicates that the particle needs to be very large: 150 µm radius. (Pr...
by Tau 2
Fri Apr 17, 2015 12:41 pm
Forum: The Accelerator
Topic: 2014 machine commissioning and 2015 start up
Replies: 59
Views: 57091

Re: 2014 machine commissioning and 2015 start up

I'll try to explain what I understood from the elogbook in the first weeks of commisioning. Most of the systems mentioned here are being adjusted, tested, repaired when needed, and procedures for using them are written. First, there are the big working magnets: the bending dipoles and focusing quadr...
by Tau 2
Wed Apr 15, 2015 1:55 pm
Forum: The Accelerator
Topic: Humor in the elogbook
Replies: 0
Views: 3573

Humor in the elogbook

For those of you reading the elogbook, Please show you the funniest entries you found. Sometimes they can be pretty interesting. For starters, here are some entries I found: MPP log, april 3, 13:26: Spent a few hours of Good Friday to analyse a big RB.A34 quench + propagation to RQ. All done, all ok...
by Tau 2
Wed Apr 15, 2015 11:21 am
Forum: The Accelerator
Topic: Entertainment for nerds
Replies: 0
Views: 3132

Entertainment for nerds

This might be fun to do if they are injecting: Open a browser, with Vistar pages in different tabs. Choose the following vistar pages in order: CPS, PSB, SPS Page 1, LHC Page 1, LHC Beam Dump Now go to the first tab, look for a "LHC Probe" line, and if you see it is sent, switch to PSB, check if you...