Ops vistars not auto updating? Atlas has funny horizontal aperture.

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Harbles

unread,
Dec 3, 2009, 6:42:18 PM12/3/09
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Not anymore 4 me anyways. Cern saving b/w? CMSTV has a 20 sec
alternating display of LHC1 and LHC_Operations screens.
http://cmsdoc.cern.ch/cmscc/cmstv/cmstv.jsp?channel=1&frames=no

also from the Elog

" Summary of the aperture scan in the IRs (preliminary from the onine
comparisons):

- CMS aperture scan is OK.
- ALICE aperture scan is OK.
- In ATLAS the V plane is OK (respectively similar to the other
experiments). The H plane is 'different' from all other IRs. ATLAS
dumped with the BCM on both beams, while the machine BLMs never gave
any significant signal (in the V plane the BLMs gave the usual
signals). We repeated the scan for both beam1 and beam2 with the same
results. We seemed not to be able to reach a sufficient aperture to
see a signal on our BLMs. One should note that we nevertheless went to
raletively large amplitudes, even tough less than in other IRs. But
since the apertures are everywhere different, one has to be carefully
not to draw hasty conclusions. "

Interesting.

Anders Mølbjerg Lund

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Dec 3, 2009, 8:32:25 PM12/3/09
to LHC Portal
I don't think mine have ever auto updated. Which elog did you get the
summary from?

Cheers Anders

On 4 Dec., 00:42, Harbles <harble...@gmail.com> wrote:
> Not anymore 4 me anyways. Cern saving b/w? CMSTV has a 20 sec
> alternating display of LHC1 and LHC_Operations screens.http://cmsdoc.cern.ch/cmscc/cmstv/cmstv.jsp?channel=1&frames=no

Harbles

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Dec 3, 2009, 11:54:55 PM12/3/09
to LHC Portal
Hi,
I recall my OP vistars updating at about 20 sec intervals.

If you go to http://lhc-commissioning.web.cern.ch/lhc-commissioning/news/LHC-news.htm
Then click on instructions next to elog and follow but you need a
password. This is where to apply http://it-div.web.cern.ch/it-div/comp-usage/default.asp
They seem quite open but it may take a day for it to work.
It may be improper to repeat info from across a pw ie; log entries.
What do you think?

@harbles

Harbles

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Dec 4, 2009, 12:00:23 AM12/4/09
to LHC Portal
Oops I may mean this link for pw https://cernaccount.web.cern.ch/cernaccount/RegisterAccount.aspx


On Dec 3, 8:32 pm, Anders Mølbjerg Lund <andersml...@gmail.com> wrote:

Chris

unread,
Dec 4, 2009, 2:03:34 AM12/4/09
to Harbles, LHC Portal
yea for sure its not updating anymore :(

I will ask the guy who designed it...

Anders Mølbjerg Lund

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Dec 4, 2009, 12:41:06 PM12/4/09
to LHC Portal
Thank you very much. I thought that the elog was off limit for non-
staff, so i am very much looking forward to gain access.

Cheers Anders

On 4 Dec., 06:00, Harbles <harble...@gmail.com> wrote:
> Oops I may mean this link for pwhttps://cernaccount.web.cern.ch/cernaccount/RegisterAccount.aspx

Harbles

unread,
Dec 4, 2009, 12:43:38 PM12/4/09
to LHC Portal
Once you get in the e-log the LHC_OPs section is where I saw the
aforementioned info.


On Dec 4, 12:41 pm, Anders Mølbjerg Lund <andersml...@gmail.com>

Chris

unread,
Dec 4, 2009, 1:08:54 PM12/4/09
to David Whitworth, LHC Portal
yes I confirmed they fixed it.

The Vistars auto update now.

David Whitworth wrote:
Seems to be updating again now, works for me anyway.

2009/12/4 Chris <C...@xymox1.com>:
  


also from the Elog


" Summary of the aperture scan in the IRs (preliminary from the onine
comparisons):


- CMS aperture scan is OK.
- ALICE aperture scan is OK.
- In ATLAS the V plane is OK (respectively similar to the other
experiments). The H plane is 'different' from all other IRs. ATLAS
dumped with the BCM on both beams, while the machine BLMs never gave
any significant signal (in the V plane the BLMs gave the usual
signals). We repeated the scan for both beam1 and beam2 with the same
results. We seemed not to be able to reach a sufficient aperture to
see a signal on our BLMs. One should note that we nevertheless went to
raletively large amplitudes, even tough less than in other IRs. But
since the apertures are everywhere different, one has to be carefully
not to draw hasty conclusions.  "


Interesting.




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