LHC portal

30 TUE 1500-2300 Measurements and collisions at 3.5 TeV 30 TUE 2300-0700 Collisions at 3.5 TeV 31 WED 0700-1500 Collisions at 3.5 TeV- Test of End of Fill ADJUST mode 31 WED 1500-2300 Collisions at 3.5 TeV and Lumi scans 31 WED 2300-0300 Collisions at 3.5 TeV 1 TH 0700-1500 Chromaticity measurement ...

However, almost 3 hours of Physics run was achieved

ATLAS just reported a collision rate of 50/60Hz, which is apparently as planned.

22:00-01:00: Beam left at 3.5 TeV–IR steering 01:00: Beam dumped 01:00–02:00: Ramping down 02:00-03:00: Back at 450 GeV–Colliding bunch pattern Single_2b_1_1_1 with B1 (1, 17851), B2 (1, 8911) - Checking beams 03:00–04:00: Ramping to 3.5 TeV 04:00 …. Preparation for stable beams 09:00: Yayfuntimes! ...

Exactly how fast is 3.5TeV? 3.5TeV is 5.6E-7 Joules. As E = 1/2mv^2, m being mass and v being velocity: v = sqrt(2*E*m) Assuming m is 2000kg for a car: v = sqrt(5.6E-7 * 2000 * 2) Which comes out as 2.4E-5 m/s, or 5.3E-5 mph. I'd happily get in a car doing that, if I didn't feel like going anywhere...

A different day, a different schedule format... Ramp to 3.5 TeV Setup of collimators at 3.5 TeV Setup of TCDQ at 3.5 TeV 5 end of fill tests to verify collimator hierarchy (ca. 4h per fill preparation): one fill for horizontal resonance blow up of Beam1 and Beam2 one fill for vertical horizontal res...

Oh bugger, I de-announced this topic >_<

Hopefully Chris will save my bacon soon

26 FRI 1900-2300 LBDS 450 + 3.5 TeV 26 FRI 2300-0300 LBDS 450 + 3.5 TeV 26 FRI 0300-0700 Protection and collimator check - 3.5TeV 27 SAT 0700-1500 Protection and collimator check - 3.5TeV 27 SAT 1500-2300 'Higher' intensity 450 GeV - preparation for stable beams 27 SAT 2300-0700 Two beam operation 3...

If you're unsure of what to add, here's a few tips: 1. http://lhc.evoludo.com/index.php/Special:Wantedpages - Any page listed here has been linked to, but hasn't been written. You don't need to write an essay - even if you just say that quarks make up hadrons, it's better than no page at all! 2. htt...

* 08:00 - 12:00 : Orbit & optics at 3.5 TeV. * 12:00 - 20:00 : Collimator setup 3.5 TeV. * 20:00 - 04:00 : LBDS 450 + 3.5 TeV. * 04:00 - 08:00 : Collimation check 450 GeV. They had great fun with dead cryo last night (seems it came back around 0200). Collimator setup is, however, on time and ongoing...

Ah, but looks can be deceiving … on “Page 1” the “Stable Beam” flags always remained red and set to “false.” This means that they never met the standard for “LHC Stable Beams.” Stable Beams is a manually set flag (or at least I remember it being as such), indicating to the experiments that the beam...

Tues 15:00 - 20:00 : Collimator setup 3.5 TeV. 20:00 - 04:00 : LBDS 450 + 3.5 TeV. 04:00 - 08:00 : SF Weds 08:00 - 12:00 : Measurements at 3.5 TeV. 12:00 - 20:00 : Collimator setup 3.5 TeV. 20:00 - 04:00 : LBDS 450 + 3.5 TeV. 04:00 - 08:00 : Beam dump at 2 TeV. More playing with collimators and opti...

amiso wrote:Today is March 31th.

You sure about that?

Cryo issues in 56 caused an emergency dump around 0830. Oddly, 34 is now showing up red (although as it's now access, this may be intentional) with 56 as green. Another plan out the window I guess

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...