Older Events and discussion 3/22/10

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LarryS
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Re: ** Current Events and discussion **

Post by LarryS » Fri Mar 12, 2010 2:34 pm

The "Schedule" shows the first collisions at 450 GeV on Thurs the 18th during the "night" shift. The "night" shift is defined as 23:00 thru 07:00 which therefore is mostly on the 19th.

The have been keeping very close to the schedule even with the surprises.

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LarryS
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Re: ** Current Events and discussion **

Post by LarryS » Fri Mar 12, 2010 2:39 pm

Slight change to the schedule ... now to start on the Morning of the 19th (07:00 to 15:00).

Wallmott
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Re: ** Current Events and discussion **

Post by Wallmott » Fri Mar 12, 2010 4:25 pm

LarryS wrote:Slight change to the schedule ... now to start on the Morning of the 19th (07:00 to 15:00).
So when will higher energies collide according to the schedule?

Stephen
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Re: ** Current Events and discussion **

Post by Stephen » Fri Mar 12, 2010 4:58 pm

March 30th.

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CharmQuark
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Re: ** Current Events and discussion **

Post by CharmQuark » Fri Mar 12, 2010 5:07 pm

My Birthday :dance:
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.

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DCWhitworth
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Re: ** Current Events and discussion **

Post by DCWhitworth » Sat Mar 13, 2010 12:26 pm

emmylou wrote:My Birthday :dance:
Oh dear. So we won't be paying attention to the LHC then ;)
DC

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CharmQuark
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Re: ** Current Events and discussion **

Post by CharmQuark » Sat Mar 13, 2010 3:06 pm

DCWhitworth wrote:
emmylou wrote:My Birthday :dance:
Oh dear. So we won't be paying attention to the LHC then ;)

DC :lol: don't think am that special to be honest :whistle:
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.

godzila
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Re: ** Current Events and discussion **

Post by godzila » Sat Mar 13, 2010 9:17 pm

What's the story with the emergency dump this pm with the 6 10 ^ 10 beam ?

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BillyPilgrim
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Re: ** Current Events and discussion **

Post by BillyPilgrim » Thu Mar 18, 2010 9:38 pm

Machine is at 3.5 Tev without beam!!! Been like that for the last 30 minutees or so. Awesome. Now ramping down. Need to check the logbook to see how everything went.

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Allan
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Re: ** Current Events and discussion **

Post by Allan » Thu Mar 18, 2010 9:53 pm

Can someone explain what being at 3.5 TeV without beams means? :think:

What is at 3.5 TeV if there is no beams? :?:

Thank you. :mrgreen:

Allan

llo
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Re: ** Current Events and discussion **

Post by llo » Thu Mar 18, 2010 10:13 pm

Ramp to 3.5TeV with no beams means the magnets were brought up to the required power levels to circulate particles at 3.5 TeV, but there were no particles actually in there circulating. They're taking it a step at a time...

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Allan
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Re: ** Current Events and discussion **

Post by Allan » Thu Mar 18, 2010 10:34 pm

Oh :shock: Oh The slow approach not like in December where it appeared that things were taking place at a much more rapid pace. I guess I have time for another beer then. :mrgreen:

Allan :sleeping-blue:

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LarryS
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Re: ** Current Events and discussion **

Post by LarryS » Thu Mar 18, 2010 11:23 pm

Todays two ramps to 3.5 TeV did not go perfectly. According to the LHC / OP LOGS magnet RQTF.A81B1 tripped both times. While it never caused a quench, take a good look at the VISTARS / LHC / STATUS OP page; note that the energy plunges from 3.5 TeV to 0 (zero) on the second trip. However, VISTARS / LHC / Page 1 shows a slow ramp down on power (amperage).

Many "behind the scenes" parameters still need a "bit of fussing." A drop in energy from 3.5 Tev to zero does place a bit of strain on the systems.

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CharmQuark
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Re: ** Current Events and discussion **

Post by CharmQuark » Thu Mar 18, 2010 11:59 pm

would rather they took it slow and do things proper :D than just rush things :crazy:
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.

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jmayes
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Re: ** Current Events and discussion **

Post by jmayes » Fri Mar 19, 2010 12:45 am

:happy-jumpyellow: Looking like all their ducks are in a row for a 3.5Tev beam tonight! Fingers crossed all goes well, their on count down now! :dance:

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