Search found 168 matches

by mfb
Thu Jul 20, 2017 7:00 pm
Forum: The Accelerator
Topic: 2017 Operation
Replies: 72
Views: 22299

Re: 2017 Operation

Recovery from the technical stop took quite some time due to various issues from the RF cavities and other parts of the machine, but we are back to stable beams with 2556 bunches. Currently at a slightly lower intensity per bunch as a few runs were dumped from high losses in one region of the accele...
by mfb
Tue Jul 04, 2017 3:25 pm
Forum: The Accelerator
Topic: 2017 Operation
Replies: 72
Views: 22299

Re: 2017 Operation

They did some measurements at beta* = 35 cm and 25 cm, but I don't know if that is planned for later this year.
by mfb
Sat Jul 01, 2017 12:02 am
Forum: Controversial topics
Topic: Several biggest errors of particle physicists.
Replies: 1135
Views: 259438

Re: Several biggest errors of particle physicists.

A crackpot was wrong?
I'm shocked.

We have another one promoting very similar nonsense, but unlike Ivan he is still around.
by mfb
Wed Jun 28, 2017 7:31 pm
Forum: The Accelerator
Topic: 2017 Operation
Replies: 72
Views: 22299

Re: 2017 Operation

Physics with 2556 bunches.
A nice machine availability, ~150% the design luminosity at the start of runs and the crossing angle reduction later lead to a fast luminosity collection - as fast as in the best weeks in 2016.

The first Machine Development block will start Friday 9 am.
by mfb
Tue Jun 27, 2017 11:50 pm
Forum: The Accelerator
Topic: 2017 Operation
Replies: 72
Views: 22299

Re: 2017 Operation

It is always nice to have higher luminosities later in the run. Ideally the luminosity would be a constant value all the time, where the constant depends on the experiment. The morning meeting slides suggest 2556 bunches starting tomorrow. The first MD/TS block is coming up soon. 4.5/fb collected by...
by mfb
Thu Jun 22, 2017 9:37 pm
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

The LHC can produce Micro Black Holes There is no indication that it could, and these black holes would be obvious if they would have been produced. Even if could, they wouldn't produce notable gravitational waves. You probably mean here ' detectable '. Both. It is something like 50 to 100 orders o...
by mfb
Thu Jun 22, 2017 4:05 pm
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

The LHC can produce Micro Black Holes There is no indication that it could, and these black holes would be obvious if they would have been produced. Even if could, they wouldn't produce notable gravitational waves. and if LIGO detects waves from BH's that are 2 million light years away Roughly a bi...
by mfb
Thu Jun 22, 2017 12:30 pm
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

There are no "other vibrations".

You are trapped in your misconception.
by mfb
Thu Jun 22, 2017 10:13 am
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

The background of gravitational wave detectors and the background in particle physics experiments are completely different things. So we don't know, or better we can't know all we can do is cross our fingers. Maybe you don't know. Particle physicists do know it. Some things are very easy to spot (e....
by mfb
Wed Jun 21, 2017 6:50 pm
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

when you collide particles do you produce waves that travell through the Higgs Field
No you do not.
Do you really want to drive your own thread off-topic?
by mfb
Wed Jun 21, 2017 2:01 pm
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

Yes, I was referring to that post.
It is a random collection of words without any physics in it.
by mfb
Wed Jun 21, 2017 10:32 am
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

Thanks for sharing the recent blog link.
chelle wrote:It also puts my argument, of how to detect collision vibrations at the LHC, back on the table. :mrgreen:
There is not even an argument. Randomly collecting words is not an argument.
by mfb
Sun Jun 18, 2017 11:10 pm
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

The Danish group used the method published by LIGO on their webside "Made public" - what they put on their website was not the publication. It was "here, if you want to play around a bit with the data, why don't you do that". The article doesn't state if LIGO actually also published that 'more intr...
by mfb
Sun Jun 18, 2017 1:04 pm
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

The arxiv submission is very questionable. A major shortcoming of the Danish group’s analysis that they pointed out to me is that the Danes use methods based on tutorials from the LIGO Website, but these methods do not reach the quality standard of the – more intricate – data analysis that was used...
by mfb
Sun Jun 18, 2017 1:07 am
Forum: Science
Topic: LIGO - Was It All Just Noise?
Replies: 27
Views: 6164

Re: LIGO - Was It All Just Noise?

The arxiv submission is very questionable. They don't even consider how LIGO evaluated the background. Not surprising that LIGO doesn't bother writing much about it. A major shortcoming of the Danish group’s analysis that they pointed out to me is that the Danes use methods based on tutorials from t...