Linear Accelerator + Massive magnets = X-ray Free Electron Laser!
Check it out: 1.5 angstroms! Or, instant brain tumor, if you get in the beam path!
http://home.slac.stanford.edu/pressr...9/20090421.htm
One of the few x-ray lasers that doesn't require an operating fission reactor (or a thermonuclear detonation) to pump the lasing medium. Cool, eh?
Adam
Senior Member
Awsome stuff. I seem to recall there was a lot of talk about xray lasers during the star wars program hype.
Doc's website
The Health and Safety Act 1971
Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.
Yeah, but the X-ray lasers that they were developing for the SDI were pumped by nuclear weapons. This one uses a linear accelerator. OK - still pretty impractical, but at least this one doesn't destroy itself every time they fire it!
Wonder how much power they can cram into a single pulse...
Adam
Senior Member
....and how long until the Trance Energy promoters snag a Chinese copy and use it for some major league crowd vapourising?
The next big thing in Europe = bone shows!
I'm sure the safety inspectors would turn a blind eye (or 2) if they did
Doc's website
The Health and Safety Act 1971
Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.
Senior Member
But seriously; probably getting up to plank levels?
Doc's website
The Health and Safety Act 1971
Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.
Senior Member
Originally Posted by Doc
Funny you should mention that. I (while as an applications engineer at Spectra-Physics) installed the Mode Locked Sync Pumped Dye Laser at SLAC for this project in 1988 & 1989. The laser produced 80ps (pico second) pulses in a train at 41mhz (yes you read it correctly 41 million pulses per second) with less than 10% pulse to pulse amplitude stability. It was installed in a very small shack in a big open field to the east side of highway 84 about .25 miles south were the linear runs perpendicular under the freeway. (the shack is still there, dont know what is in it tho, I saw it at christmas when I went to the bay area) The laser system was used as a clock...that is all. There is a bit o history from meall verifiable
Pat B
laserman532 on ebay
Been there, done that, got the t-shirt & selling it in a garage sale.
Senior Member
Jeeze! What kind of experiment would need more than an atomic clock? Something to do with light speed time shift?Funny you should mention that. I (while as an applications engineer at Spectra-Physics) installed the Mode Locked Sync Pumped Dye Laser at SLAC for this project in 1988 & 1989. The laser produced 80ps (pico second) pulses in a train at 41mhz (yes you read it correctly 41 million pulses per second) with less than 10% pulse to pulse amplitude stability. It was installed in a very small shack in a big open field to the east side of highway 84 about .25 miles south were the linear runs perpendicular under the freeway. (the shack is still there, dont know what is in it tho, I saw it at christmas when I went to the bay area) The laser system was used as a clock...that is all. There is a bit o history from me
Doc's website
The Health and Safety Act 1971
Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.
Senior Member
I honestly dont know but a clock was my understanding. Could it have something to do with measuring doppler shift of particles??? the beam shot down a hole underground. I did get a tour of the facility and all i remember is it was very overwhelming, ya got around on golf carts due to its size.
I also spent a lot of time at Sandia Labs in NM. LLNL and Sandia labs in livermore, ca. Installing these same systems (not to mention about 10 universities as well). I'm convencend it was tied to SDI.
Some where you can find the thread where I told Mixedgas where I was "escorted" to the restroom. It wasnt high security (and i did not have a clearance) but it was very controlled access for me to many locations. Tools and I were searched going in and going out.
And if anybody is reading this, I have said nothing of any importance or consequence.
Pat B
laserman532 on ebay
Been there, done that, got the t-shirt & selling it in a garage sale.
Senior Member
Cool stuff! We're doing some work on the new BAE Systems facility at the moment (where they're developing your new F53 Lightning fighter), that's very controlled, police records check, had to sign the official secrets act, then when I visit site I have to hand in cellphone etc, etc, before they let me through th gate, and that's just visiting the roof!
Doc's website
The Health and Safety Act 1971
Recklessly interfering with Darwin’s natural selection process, thereby extending the life cycle of dim-witted ignorami; thus perpetuating and magnifying the danger to us all, by enabling them to breed and walk amongst us, our children and loved ones.
Creaky Old Award Winning Bastard Technologist
If SLAC runs in pulses, each part of the accelerator turned on in sequence to "Bunch" the thingies they are speeding up, you probably just did the timing for the bunching. Either that or it was a "source" of something energetic. I'd bet on the timing thing though, because of the "offset" in distance.
my two best guesses.
certain words not used for various reasons.
Steve
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