where physics and life collide
Monorails
The LHC must have received a visit from a fast talking Mr. Lanley because I just learned that they have a monorail, and it’s name is TIM! How did this slip by me until now?
TIM stands for Train Inspection Monorail, which is a hugely awkward redundancy and goes to show that no grammar will stand between a scientists and his acronym. (Unless I turn out to be hugely misinformed: does the LHC tunnel contain another train, one of such vital importance that they built a monorail to inspect it?) Someone is clearly very wedded to “TIM”. But, if this boxy ceiling crawler absolutely must play the role of nondescript schoolyard chum in the “unique” three-act play that our robot descendants will write about every last one of us, is there a reason we’re not working from Tunnel Inspection Monorail?
TIM is expected to be useful for preliminary environmental inspections before workers or emergency crews enter. It may also be used for inspecting the collimators, which become one of the most radioactive elements of the machine after running. (The collimators sweep away stray protons around the beam and so end up taking a substantial particle bombardment.) In addition, I might propose that TIM, at 30×30 cm, is also the perfect size for moving puppies.
There is an easy-reading technical note on CDS if you crave more monorail info. No puppies are mentioned.
If you will allow a touch of free association, it’s as good a time as any to mention Flashforward, a novel by Robert Sawyer, that I have been hearing about recently though it was published back in 1999. It is set in and around CERN and centers around a cataclysmic event precipitated by the LHC. (A new TV show loosely based on the novel has been running in the US, I’ll have more to say about it in a future post.) From the science media commentary and the few excerpts I have read, it seems to take a more realistic view of CERN than Dan’s Brown stain, Angels and Demons.
But, one liberty Flashforward does take is to describe scientists traveling around the LHC via monorail. “Utter poppycock!” I would exclaim… until today. If by “scientists” Sawyer was speaking of puppies, then I think he’s on to something.
(Oh, and the book also mentions flying cars. It just might be a good read, but fuck flying cars.)
Addendum: I ran across another article on TIM, “Remotely-operated equipment for inspection, measurement and handling.”
| Print article | This entry was posted by lots-o-love on 25 January 2010 at 18:35, and is filed under The CERN of our dreams. Follow any responses to this post through RSS 2.0. You can leave a response or trackback from your own site. |









about 7 months ago
There was a monorail at LEP times and it could carry a bit more than just puppies: http://cdsweb.cern.ch/record/39132
about 7 months ago
Daniel, I didn’t realize there was such a nice picture available on CDS. That is exactly the same rail as they are using now, and it could certainly carry more of a load than just puppies (1 Ton/m I think I have read). I don’t believe there are clearances in the LHC era for the old monorail cars and the rail couldn’t handle all the lifting for the new dipoles. But, I have to admit the regression to a puppy sized vehicle has advantages: the new cars are small enough to slip through holes in doors and shielding to operate autonomously during controlled access conditions.
about 5 months ago
I think you’ll find “Train Inspection Monorail” makes better sense in French.
about 5 months ago
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