Search found 163 matches

by dukwon
Mon Oct 18, 2021 10:48 am
Forum: The Accelerator
Topic: October 2021 Beam Tests + 2021/22 YETS
Replies: 34
Views: 41646

Re: October 2021 Beam Tests

~1 day delay over the weekend due to an issue with a UPS (exploded battery). BIS and LBDS tests took place on Sunday. A vacuum valve controller caused issues and needed replacing. One klystron on beam 1 needs replacing (takes weeks) but beam tests can go ahead without it. Today, following some inter...
by dukwon
Fri Oct 15, 2021 7:53 pm
Forum: The Accelerator
Topic: October 2021 Beam Tests + 2021/22 YETS
Replies: 34
Views: 41646

October 2021 Beam Tests + 2021/22 YETS

The LHC is currently in "machine checkout": the machine and caverns are closed, all interlocks are cleared, and the beam dump system is armed. Over the weekend we will have some machine protection tests and short transfer line tests. Monday 18th Oct should see some beam mode tests (NB: no actual bea...
by dukwon
Tue Jun 22, 2021 1:55 pm
Forum: The Accelerator
Topic: Cooling of last sector started! (About quench training)
Replies: 9
Views: 13709

Re: Cooling of last sector started! (About quench training)

While at least 3 sectors are fully trained to 7 TeV, the target beam energy from the training campaign will be 6.8 TeV. S23 and S78 are just about there (and warm now anyway). S56 is maybe a dozen quenches away. The champagne bottle under summer student temple shall remain corked (if it's still ther...
by dukwon
Fri Jun 18, 2021 9:19 am
Forum: The Accelerator
Topic: Cooling of last sector started! (About quench training)
Replies: 9
Views: 13709

Re: Cooling of last sector started! (About quench training)

Sector 23 also had to be warmed up for a repair (diode replacement). S23 and 78 will be cooled back down over August. The 2-week beam test is scheduled for 18th October
by dukwon
Tue May 18, 2021 12:09 pm
Forum: The Accelerator
Topic: Cooling of last sector started! (About quench training)
Replies: 9
Views: 13709

Re: Cooling of last sector started! (About quench training)

Sector 78 has been warmed back up to allow for a damaged dipole to be repaired/replaced. Luckily the machine schedule is so far ahead of the experiments that at worst it is an O(weeks) delay to the autumn beam tests.
by dukwon
Sun Sep 08, 2019 11:07 am
Forum: The Accelerator
Topic: Schedule for 2020
Replies: 2
Views: 17029

Re: Schedule for 2020

Not sure which long-term schedule you're looking at, but Run 3 has been scheduled to start in 2021 since at least 2015

https://lhc-commissioning.web.cern.ch/l ... g-term.htm

The schedule for LS2 (as of Chamonix 2018) is here:
FjdbJG5.png
by dukwon
Fri Jun 21, 2019 8:38 am
Forum: The Accelerator
Topic: The ULO
Replies: 1
Views: 14207

The ULO

For those unaware, ever since the start of Run 2 there has been an object lying on the bottom of the beam pipe in sector 81. It was detected in aperture scans and nicknamed the "Unidentified Lying Object" (ULO). There was some discussion here when it was first detected: http://www.lhcportal.com/Foru...
by dukwon
Wed Feb 13, 2019 7:27 am
Forum: ATLAS
Topic: 35c3 talk: "Conquering Large Numbers at the LHC"
Replies: 1
Views: 26036

35c3 talk: "Conquering Large Numbers at the LHC"

ATLAS physicists talk about data acquisition, processing and analysis to an audience of non-physicists. Much of what they say applies to other collider experiments, too.

https://media.ccc.de/v/35c3-9851-conque ... at_the_lhc
by dukwon
Tue Feb 12, 2019 1:46 pm
Forum: The Accelerator
Topic: 9th LHC Operations Evian Workshop
Replies: 0
Views: 23458

9th LHC Operations Evian Workshop

by dukwon
Tue Jan 15, 2019 5:40 pm
Forum: Off topic
Topic: FCC CDR released
Replies: 3
Views: 13437

Re: FCC CDR released

Diagram of the location and local rock types:
by dukwon
Tue Jan 15, 2019 3:47 pm
Forum: Off topic
Topic: FCC CDR released
Replies: 3
Views: 13437

FCC CDR released

by dukwon
Tue Dec 04, 2018 9:14 am
Forum: The Accelerator
Topic: LS2 and looking ahead to Run 3
Replies: 5
Views: 19712

Re: LS2 and looking ahead to Run 3

First night of LS2, violent thunderstorm caused extensive power cuts. The fire brigade had a busy night.
by dukwon
Mon Dec 03, 2018 6:53 am
Forum: The Accelerator
Topic: LS2 and looking ahead to Run 3
Replies: 5
Views: 19712

Re: LS2 and looking ahead to Run 3

Screenshot from 2018-12-03 07-52-39.png
Screenshot from 2018-12-03 07-52-39.png (2.84 KiB) Viewed 19241 times
by dukwon
Mon Dec 03, 2018 6:06 am
Forum: The Accelerator
Topic: 2018 Operation
Replies: 78
Views: 231141

Re: 2018 Operation

Screenshot from 2018-12-03 07-05-49.png