gief blackhole!
Main PC: Asus Rampage IV Extreme / 3960X@4.5GHz / Antec H1200 Pro / 32GB DDR3-1866 Quad Channel / Sapphire Fury X / Areca 1680 / 850W EVGA SuperNOVA Gold 2 / Corsair 600T / 2x Dell 3007 / 4 x 250GB SSD + 2 x 80GB SSD / 4 x 1TB HDD (RAID 10) / Windows 10 Pro, Yosemite & Ubuntu
HTPC: AsRock Z77 Pro 4 / 3770K@4.2GHz / 24GB / GTX 1080 / SST-LC20 / Antec TP-550 / Hisense 65k5510 4K TV / HTC Vive / 2 x 240GB SSD + 12TB HDD Space / Race Seat / Logitech G29 / Win 10 Pro
HTPC2: Asus AM1I-A / 5150 / 4GB / Corsair Force 3 240GB / Silverstone SST-ML05B + ST30SF / Samsung UE60H6200 TV / Windows 10 Pro
Spare/Loaner: Gigabyte EX58-UD5 / i950 / 12GB / HD7870 / Corsair 300R / Silverpower 700W modular
NAS 1: HP N40L / 12GB ECC RAM / 2 x 3TB Arrays || NAS 2: Dell PowerEdge T110 II / 24GB ECC RAM / 2 x 3TB Hybrid arrays || Network:Buffalo WZR-1166DHP w/DD-WRT + HP ProCurve 1800-24G
Laptop: Dell Precision 5510 Printer: HP CP1515n || Phone: Huawei P30 || Other: Samsung Galaxy Tab 4 Pro 10.1 CM14 / Playstation 4 + G29 + 2TB Hybrid drive
Another power failure
http://www.theregister.co.uk/2009/12...failure_again/
Your not powering the LHC with budget end PSU's are you?
D'oh!
I haven't been keeping up with things the last few days. I'd vaguely heard about this from my boss, but thought the problem was more with the power to the computer centre.
Power and cooling at CERN seems to be constant problem for reasons I don't understand. When we first started going down below ground to install + commission the trigger electronics we were strongly advised to get a head-torch for our hard hats in case of power cuts... and they were pretty regular, along with cooling problems. At one point, it wasn't so much that we had power outages, but power "innages", if that's a real word.
Pics 30 & 20 are my favourites. How big do those magnets have to be!!
Originally Posted by The Quentos
I still don't trust this thing.
But them pictures at really cool and working at that site must be pretty awesome, through I do have a question, what was the reason for building it underground?
No room on top?
Building it ~100m underground might help to reduce background radiation/particles messing with the detectors, though I'd guess available space, insulation and hiding the portal guns they're developing are also reasons.
Yeah, the reason for building it underground was for space + safety reasons. If they built it above ground they'd have to buy up all the land required to build a 27km circular building to enclose the magnets + experiments.
Background radiation isn't such a big deal, as it's very easy to exclude cosmics from the collision data. Even 100 meters underground we still get >100Hz of cosmic muons hitting the detector I work on.
Here is the latest word from the CERN Director General (just realised how scarily authoritarian "Director General" sounds...):
Dear CERNois,
This weekend we’ve seen further important progress with beam commissioning in the LHC at 450 GeV. On Friday evening, 4 December, beam circulated with more than one proton bunch for the first time. This was another significant step towards running at useful beam intensities.
Then in the early hours of Sunday, the operators succeeded in circulating four bunches in each of the LHC’s two beams and announced stable beams for the experiments. On Sunday evening there was further stable running with higher-intensity bunches. All six LHC experiments have observed collisions and collected useful quantities of data. They were able immediately to begin checking the operation of their detectors, with excellent results that augur well for the future.
Rolf Heuer
There are currently 1 users browsing this thread. (0 members and 1 guests)