Pulsed Lasers AT Selem 2014

[Photonbeam]

"Do you know how to start a man's heart with a downed power line? Well, there really is no wrong way." - Hank Hill

[buffo]

Yikes! Have fun but for godsake be careful guys. Designate one of the old-timers at SELEM as LSO and have good beam stops.

No worries. We've had lots of high-power gear in there before, and all the workspace areas have cinderblock walls. Plus, as several people have already mentioned, we will have at least a dozen ILDA-certified LSO's on site.

That being said, 'scopes are more dangerous than your average run-of-the-mill argon laser, so yes - extra precautions will need to be taken. (See below)

Steve will be acting, limited liability, honorary LSO in laser work areas where he is working, the auditorium is NOT mine, administratively.

No problem with the Auditorium, Steve. We will have DZ and Jeff in there for the setup to make sure everything is legal, and DZ will be the man in charge while anything is running in there. So the Auditorium is covered.

As you pointed out - the major hazard will be in the work room. I have no problem with you ushering out extraneous people from that area in the interest of safety.

I don't have any Swagelock fittings for the micro hoses.

In a pinch, we may be able to find these locally. There are a few plumbing supply places in Newton.

QCW20 lamps covers 90% of AM$ products. The following are age unknown. Please, some one have at least one sealed, new, boxed spare there.

Just ordered one from that E-bay auction you linked to. Should be here on the 5th. I'll bring it with me.

One should have both of the water filters, preferably new ones, as well.

Got a good source for the D/I cartridges? Graingers?

If you see a blinking LED bike light, clipped to a warning sign, that means pay attention. Understand there is CLASS IV light on the other side of the door.

Works for me! Please bring it with you.

Adam

[Laserman532]

This medal is still available - the record at a lem is 42 watts (on a laser wizard) for a single laser. It is still hanging on the wall in my garage if anyone can beat it

[Laserman532]

Correction 42.7 watts

[Photonbeam]

Was that a perfectly good didgeridoo Pat?

[mixedgas]

Quote:
In a pinch, we may be able to find these locally. There are a few plumbing supply places in Newton.
End Quote.

No, we won't. Swagelok typically has one distributer per state, usually in the capital city, and usually open from 9:30 Am to 4:30 PM five days a week.. Take a look under the laser deck and fire up the plumbing before you bring it. Those fittings are rare as a hen's teeth. The Swagelok manufacturing plant is forty minutes from my house, and they have counter sales for a few hours each day. If not, its web/mail order, or over the counter sales, and they are not into rapid shipping.

http://www.swagelok.com/NCTN.aspx

The hoses in question provide cooling to the Q-Switch, KTP Assembly, and Beam Dumps, and they are 1/3 the size of model airplane fuel tubing. Without a lathe, torch, and some good tooling, no way I could improvise a replacement. They break/leak at the juncture of the cap and ferrule. They break/leak in storage, not in operation.

Steve

[Laserman532]

Was that a perfectly good didgeridoo Pat?

thats right mate!

[Laser Wizardry]

" 15 characters"

[swamidog]

this would be an appropriate time for your tin foil goggles picture...

I nominate Swami for beamstop. (j/k)

[Photonbeam]

...The hoses in question provide cooling to the Q-Switch, KTP Assembly, and Beam Dumps, and they are 1/3 the size of model airplane fuel tubing. Without a lathe, torch, and some good tooling, no way I could improvise a replacement. They break/leak at the juncture of the cap and ferrule. They break/leak in storage, not in operation.

Steve

Another source of leaks on those old 'scopes is a cracked cavity lid around the lamp terminals. It can go unnoticed under the white plastic terminal cover so have a look there when you leak test. I have also seen leaks around the rod o-rings that you might not notice right away until the power drops. By then the water seeping onto the rod face will burn the coating on the rod $$. Go ahead and do a leak test under pressure without igniting the lamp and check these locations. Look through the rod with a flashlight to confirm a clear optical path.