Search found 4 matches

by jepson
Wed Dec 02, 2009 12:05 am
Forum: The Accelerator
Topic: LHCf Experment
Replies: 1
Views: 1107

Re: LHCf Experment

A late, but hopefully helpful, answer: the LHCf provides better data for identifying Extremely High Energy Cosmic Rays (lab equivalent of 10^17 eV and up). Here's how I've understood it: * The problem: All we have on EHECRs ATM is theories based on whatever low-energy lab data has been gathered so f...
by jepson
Sat Nov 28, 2009 3:38 am
Forum: The Accelerator
Topic: problems 10/26/09 - 10/28/09
Replies: 28
Views: 4701

Re: ** Current problem **

Relax, the doomsday nuts should be taken out and shot for their own good :-)

(I picked a never-before seen failure and a system that hasn't broken down yet, added some bad timing and arrived at "violent booster boom next Wednesday")
by jepson
Sat Nov 28, 2009 3:12 am
Forum: The Accelerator
Topic: problems 10/26/09 - 10/28/09
Replies: 28
Views: 4701

Re: ** Current problem **

Yeah, it's been a rough week. Losing vac in the PS, losing vac in the effing linac that's been running without a glitch for ages now, losing cryo, strange new QPS bugs showing up, injectors not injecting, kickers not kicking and now a power failure. Makes me wonder if there's something to the theori...
by jepson
Thu Nov 26, 2009 4:33 am
Forum: New Users Start Here
Topic: What do the displays mean ?
Replies: 85
Views: 59262

Re: What do the displays mean ?

SMP means "Safe Machine Parameters". EDMS 883620 lists (in a very roundabout way) the conditions under which each is true (except for Global Beam Permit, I guess that's a human decision). EDMS 810607 contains them too, along with other info (such as the locations of the detectors).