2010 Briefings, Schedules and Problems

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Danny252
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Re: 2010 Briefings, Schedules and Problems

Post by Danny252 » Tue Mar 09, 2010 4:49 pm

They've got a running (possibly constantly updated) schedule going now I believe, linked on the Progress page as "Latest Planning Outline". Copied 24 hours or so of info.

M - Morning Shift (0700-1500)
A - Afternoon Shift (1500-2300)
N - Night Shift (2300-0700)

Date - Day - Shift - Hours Allocated - Operation

9 TUE A 1900-2300 Trial ramp to 1.2 TeV - test Q and orbit feedback
9 TUE N 2300-0700 Measurements at 1.2 TeV (beating etc. - optics development with energy - test rampdown combo
10 WED M 0700-1100 Injection/LBDS checks Losses at injection, TCDQ
10 WED M 1100-1500 MPS - powering failures…
10 WED A 1500-2300 High intensity setup (IQC limits…) High single bunch intensity - emittance blow-up on flat bottom etc, loss maps, 1 hour for RF, 5 e10
10 WED N 2300-0400 Damper setting-up end 04:00

Trial ramp is probably the most interesting, with high intensity testing tomorrow Afternoon. Could make for some interesting watching :)

Of note is that all 3 shifts on Thursday (following the Damper Setting Up on Weds) are marked in as nQPS reconfig and Cryo downtime.

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Re: 2010 Briefings, Schedules and Problems

Post by Wallmott » Fri Mar 12, 2010 11:24 am

So any ideas of when they will collide at 7 TeV?

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Re: 2010 Briefings, Schedules and Problems

Post by Danny252 » Fri Mar 12, 2010 7:54 pm

Same format as above:

12 FRI A 1500-2300 Trial ramp to 1.2 TeV - test Q and orbit feedback
12 FRI N 2300-0700 TOTEM interlock tests (2 hours - no beam). Aperture
13 SA M 0700-1100 AC dipole
13 SA M 1100-1500 Contingency
13 SA A 1500-2300 Beam quality tuning
13 SA N 2300-0700 Aperture
14 SU M 0700-1900 Trial ramp to 1.2 TeV - test Q and orbit feedback - dry ramp to 3.5 TeV (4 sectors)
14 SU A 1900-2300 Injection/LBDS (19:00 - 23:00)
14 SU N 2300-0700 SF

I assume "Contingency" is fallback time in case the ramp runs over or similar - which seems possible, as the ramp has yet to occur at 2100, with only 2 hours left until the supposed end of ramping.

Also, note that Monday and Tuesday are scheduled nQPS work, with no beam activities.

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Re: 2010 Briefings, Schedules and Problems

Post by Danny252 » Wed Mar 17, 2010 7:07 pm

17 WE M 0700-1500 nQPS re-parameterization part 2/TECHNICAL STOP / CHECK SPS beam check beam quality from SPS for 5e10 in TL
17 WE A 1500-0000 HWC tests / Operational cycle tests S34 45 78 81 / CHECK SPS beam
17 WE N 0000-0400 Ramp for LBDS tests - no beam. LBDS energy tracking, BETS tolerances and SMP energy distribution -TCDQ
18 THU N 0400-0700 Recovering beam conditions
18 THU M 0700-1100 Orbit feedback
18 THU A 1100-2300 3.5 TeV ramp commissioning - with beam. All coll at nominal inj settings for 1st ramp - BPM IR6 +/- 6 mm - LHC PROBE, Blown up emittance 3.5 um - BQM - bucket number?
18 THU N 2300-1100 SF (beta beat measurements?)
19 FRI M 1100-2300 3.5 TeV ramp commissioning
19 FRI N 2300-1100 2 beam, setup, 4 bunch checks - extraction checks, collimators locked in position and gaps, beam dump, MPS tests

Supposedly 3.5TeV on Thursday, with 4 bunches on Friday (I assume this is 2 per beam) - HWC ongoing at 2000 until "tomorrow", so the schedule seems to be holding fairly well so far.

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Re: 2010 Briefings, Schedules and Problems

Post by Shadowdraxx » Wed Mar 17, 2010 7:14 pm

Danny252 wrote:17 WE M 0700-1500 nQPS re-parameterization part 2/TECHNICAL STOP / CHECK SPS beam check beam quality from SPS for 5e10 in TL
17 WE A 1500-0000 HWC tests / Operational cycle tests S34 45 78 81 / CHECK SPS beam
17 WE N 0000-0400 Ramp for LBDS tests - no beam. LBDS energy tracking, BETS tolerances and SMP energy distribution -TCDQ
18 THU N 0400-0700 Recovering beam conditions
18 THU M 0700-1100 Orbit feedback
18 THU A 1100-2300 3.5 TeV ramp commissioning - with beam. All coll at nominal inj settings for 1st ramp - BPM IR6 +/- 6 mm - LHC PROBE, Blown up emittance 3.5 um - BQM - bucket number?
18 THU N 2300-1100 SF (beta beat measurements?)
19 FRI M 1100-2300 3.5 TeV ramp commissioning
19 FRI N 2300-1100 2 beam, setup, 4 bunch checks - extraction checks, collimators locked in position and gaps, beam dump, MPS tests

Supposedly 3.5TeV on Thursday, with 4 bunches on Friday (I assume this is 2 per beam) - HWC ongoing at 2000 until "tomorrow", so the schedule seems to be holding fairly well so far.
Hmm is there still a 3 day stop on monday the 22nd or did the one this week replace that (meaning they are ahead).

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Re: 2010 Briefings, Schedules and Problems

Post by Shadowdraxx » Wed Mar 17, 2010 9:10 pm

Shadowdraxx wrote:
Hmm is there still a 3 day stop on monday the 22nd or did the one this week replace that (meaning they are ahead).
Nevermind I managed to find the full thing

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CharmQuark
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Re: 2010 Briefings, Schedules and Problems

Post by CharmQuark » Wed Mar 17, 2010 9:18 pm

which is? :whistle:
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.

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LarryS
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Re: 2010 Briefings, Schedules and Problems

Post by LarryS » Thu Mar 18, 2010 12:11 am

emmylou,

Full schedule is on "The Portal"; see "LHC", "Progress", "Latest Planning Schedule".

Note a new version is to be posted tomorrow after the 8:30 meeting.

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CharmQuark
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Re: 2010 Briefings, Schedules and Problems

Post by CharmQuark » Thu Mar 18, 2010 12:28 am

Larry :)

do you have to download stuff? cause if so the reason i keep asking is my laptop won't let me download anything :oops: why cause it's stupid :oops:

anyways thanks :thumbup: I get to find out whats going on along the lines lol :thumbup:
Anyone who doesn't take truth seriously in small matters cannot be trusted with large ones either by Albert Einstein.

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Re: 2010 Briefings, Schedules and Problems

Post by Danny252 » Sun Mar 21, 2010 2:31 pm

Today's plan:

* Re-establish 450 GeV beams
* Measure and correct the optics and beam parameters at 450 GeV - on going and will continue (as soon as Pt6 access is complete)
* Ramp at 3.5 TeV
* Measure and correct the optics and beam parameters at 3.5 TeV
* Protection devices and collimators setting-up at 3.5 TeV (tbc)
* 23:00 - 07:00 : Damper setting-up at 450 GeV

Looks like a 3.5TeV ramp with beam again tonight :) Then more beam oscilliation tuning with the dampers overnight.

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Re: 2010 Briefings, Schedules and Problems

Post by Wallmott » Sun Mar 21, 2010 8:14 pm

Danny252 wrote:Today's plan:

* Re-establish 450 GeV beams
* Measure and correct the optics and beam parameters at 450 GeV - on going and will continue (as soon as Pt6 access is complete)
* Ramp at 3.5 TeV
* Measure and correct the optics and beam parameters at 3.5 TeV
* Protection devices and collimators setting-up at 3.5 TeV (tbc)
* 23:00 - 07:00 : Damper setting-up at 450 GeV

Looks like a 3.5TeV ramp with beam again tonight :) Then more beam oscilliation tuning with the dampers overnight.

Any idea of what Optic measurements are? What are they doing?

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Re: 2010 Briefings, Schedules and Problems

Post by oxodoes » Sun Mar 21, 2010 10:41 pm

Measuring emittance, tunes, betatron oscillation, orbits, chromacity and so on. All of these can be manipulated by the magnets. Find out more about acclerator science here: http://indico.cern.ch/scripts/SSLPdispl ... &nbweeks=7

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Re: 2010 Briefings, Schedules and Problems

Post by DCWhitworth » Sun Mar 21, 2010 10:54 pm

oxodoes wrote:Measuring emittance, tunes, betatron oscillation, orbits, chromacity and so on. All of these can be manipulated by the magnets. Find out more about acclerator science here: http://indico.cern.ch/scripts/SSLPdispl ... &nbweeks=7
Or to put it simply, they're learning about the characteristics of the LHC. :)
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Re: 2010 Briefings, Schedules and Problems

Post by Xymox » Mon Mar 22, 2010 7:39 am

Hey, you moderator guys can put topics into the announcement section of the board. This was in that section but I dropped the old one from last year. We should rotate these now and then so they dont get too long..

Well, Danny you have moderator powers, so make this topic a announcement. But you gotta drop it back into normal and start a new one now and then..

Its under quick-mod tools down below.. You Moderators should play with these tools.

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Re: 2010 Briefings, Schedules and Problems

Post by Danny252 » Mon Mar 22, 2010 10:19 am

22 MON M 0700-1100 Access
22 MON M 1100-1900 Recover - Pre-cyle - Ramp to 3.5 TeV + measurements
22 MON A 1900-0100 Protection device and collimator setting-up at 3.5 TeV (beam based alignment after verification of orbit and optics)
22 MON N 0100-0700 Orbit feedback, Calibration of BPM IP 6

It seems that the schedule went out the window already. Beams were still up at 0800 (yet it's listed as "Access" time), before a cryo failure caused an emergency dump at about 0830. Access is until 1200 (1300 for Expts) with the return to beams expected after 1300 - the 1100-1900 slot is therefore likely moved forwards by at least 2 hours, and may/may not be shortened slightly to get back on track for 1900.

Also: I don't get any option to make this topic an announcement, nor is there anywhere I can move it to make it one =/

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