http://www.youtube.com/watch?v=_NMqPT6oKJ8

it's funny how everyone has a different answer.

Aussie, Aussie, Aussie!

I love how clever most of the answers sound, even if they don't agree with each other much at all.

Jibb

Haha nice, thanks

Quite an irrelevant question, even though the answers are definitely amusing. Your hand obviously wouldn't survive the vacuum circumstances and any matter that gets hit will be noticaeble. With those amounts of energy, the actual mass doesn't matter that much.

You mean the rest mass? Obviously.
I wonder if your hand would get pierced or if all particles interact with your hand. If I had to guess, I'd say the latter one, because the cross section of your hand for massive particles should be 1.

If the energy gets absorbed (the hand is too massive to pass though), the hand will heat up superfast.

Probably bursting like an overheated saussage.

And then then part of the pieces get sucked into the vacuum tube.

But Putting it directly into the ring would prohibit the particles
to get exelerated, so it
needs to be on some diversion tube extention.

Another question: Who cleans the mess up, after your hand exploded in a trillion pieces?

The costs are is secured by a fund. probably backed by some bigger insurance company.

There will be a controlled shutdown, that take quite some time
to warm up the ring.(this can take weeks, to prohibit the
magnets to crack)

The cleaning needs to be assesed. Its probably required to
replace the tubing completely.
Else the remaining hand-tissue will freezedry and mummyfy in the vacuum tube.

The remaining parts on the floor/walls can be cleaned with standard
floor cleaner, probably by a technician.

Well, if you're asking this as a realistic question, I can tell you that as soon as you'd open that ring to put your hand inside, the pressure will increase and the accelerated particle stream will immediately collapse (calculate the mean free path, you need << 10^-12 mbar to keep the beam from colliding). Another thing is that there's no way to access the inside of the ring, if it is assembled.

Well you can make an exit "pipe" that
lets some of the packets fly straight, and not get
dragged into the ring.
(turning off the magnets in a pulse, or using a second magnet)

If you put the hand onto the exit-pipe, it should
keep the air long enough outside the vacuum tube
to have an effect.

its the whole idea to first accelerate particles, and then
let them fly outside of the accelerator ring.

http://www.lls.cells.es/AboutUs/WhatIs