New tabletop particle accelerator

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New tabletop particle accelerator

Postby John Futter » Thu Dec 11, 2014 9:28 am

Interesting
anyone got a pentawatt laser lying around

http://phys.org/news/2014-12-world-comp ... tml#ajTabs

lesser particle power might be achievable with a nitrogen laser like the one published years ago using pcb board material
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Re: New tabletop particle accelerator

Postby Richard Hull » Fri Dec 12, 2014 7:56 am

Sure! Table top accelerator...Giant, aircraft hanger sized laser....The ultimate in compact accelerator systems.

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Progress may have been a good thing once, but it just went on too long. - Yogi Berra
Fusion is the energy of the future....and it always will be
Retired now...Doing only what I want and not what I should...every day is a saturday.
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Re: New tabletop particle accelerator

Postby jjwest » Fri Jan 02, 2015 7:45 am

Never seen this before. Amazing.
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Re: New tabletop particle accelerator

Postby prestonbarrows » Fri Jan 02, 2015 4:54 pm

Richard Hull wrote:Sure! Table top accelerator...Giant, aircraft hanger sized laser....The ultimate in compact accelerator systems.

Richard Hull


Still a bit smaller than the 5 square kilometers or so needed for a comparable booster ring. Blame the click-bait writing usually found on Phys-org...

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Re: New tabletop particle accelerator

Postby Richard Hester » Sat Jan 03, 2015 12:40 am

The petawatt lasers are extremely small compared to the monster in Livermore - their high wattage is derived from extremely short pulse width (femtoseconds), generated by a big table full of expensive optics using frequency chirp/pulse compression techniques. The Ti-sapphire laser that drives the mess ain't all that cheap either.

As an aside, one research team is trying to put together a system with extremely high peak power in order to observe vacuum breakdown.
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Re: New tabletop particle accelerator

Postby Richard Hester » Sun Jan 11, 2015 2:31 am

Here's the reference to vacuum breakdown and other experiments contemplated for ultrashort pulse high-intensity lasers. Vacuum breakdown was mentioned as far back as the early 70's - laser technology is finally getting to the point where it's capable - a matter of finesse rather than brute power/energy (take that, Livermore).

http://www.laserfocusworld.com/articles ... acuum.html
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Re: New tabletop particle accelerator

Postby Werner Engel » Wed Aug 12, 2015 5:30 pm

I just went through the laserfocusworld article you mentioned and also browsed through the ELI website:
It might be true; generating extremly high field intensities has to be tested once. But I see several Inhibitors there: The countries where they do want to build these devices are not famous for turning every € the receive from the EU into science - they are more known for corruption and private benefits hidden behind governmental decisions.
This seems to be truer, as all these facilities are still in the process of planning and buildings - since 2011!
On the other hand, ITER was not planned to be built in a day either …

I whish them good luck!
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