Thanks: 0
Likes: 38
Needs Pictures: 0
Picture(s) thanks: 0
Results 76 to 90 of 110
Thread: Cern
-
5th October 2013, 05:49 PM #76SENIOR MEMBER
- Join Date
- Oct 2012
- Location
- Australia
- Posts
- 764
-
5th October 2013, 07:05 PM #77GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,770
Silicon?
Molybdenum?
Not exactly sure about the color.
-
5th October 2013, 07:56 PM #78
Yes i have some of it in my shed, i think most of us would......but the bit i have isn't the same colour as in the photo's.....
(yes i cheated, fascinating read Ray, not that i have got to it all yet)
10um over 200m, now that is straight!
Ew1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
-
5th October 2013, 07:58 PM #79Philomath in training
- Join Date
- Oct 2011
- Location
- Adelaide
- Age
- 59
- Posts
- 3,148
Surely not concrete?
Michael
-
5th October 2013, 08:36 PM #80GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,770
nope.
Colors can be tricky. Think carbon, black one way, grey another, stack it up just right and its clear........
But it was just a guess based on "stiffer than cast iron and lower thermal expansion coefficient than granite" and I'm not even such I got that much right lol
Stuart
-
5th October 2013, 08:59 PM #81SENIOR MEMBER
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 2,656
Tungsten carbide
Phil
-
5th October 2013, 09:03 PM #82
Both Stu and Phil, you are so close but so far......
1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
-
5th October 2013, 09:26 PM #83
My last guess might be Titanium?
-
5th October 2013, 10:03 PM #84SENIOR MEMBER
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 2,656
Silicon carbide...maybe
-
5th October 2013, 10:23 PM #85
Give that man a cigar... Silicon Carbide girders it is.. This pdf is slightly out of date, but the main design features are still current, it's such a long term project, that I've no doubt things will change even more over the years.. they even take into account the effect of the moon's tidal forces causing ground movement, and the way local variations in gravity affect the wire sag tables..
http://clic-alignment.web.cern.ch/cl...for%20CLIC.pdf
Has anyone done an active lathe alignment system I wonder?
Regards
Ray
-
6th October 2013, 01:11 AM #86GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,770
That was my next guess
Do Phil and I get half a point each? lol
I have, but the sample rate is a little slow at 0.00000007hz (an attempt at humor in an thread that goes over my head fairly often). Though the parts I've read about the wire are interesting. Anyone know what a knife-edge pulley is?
Stuart
-
6th October 2013, 07:00 AM #87SENIOR MEMBER
- Join Date
- Sep 2011
- Location
- Ballarat
- Age
- 65
- Posts
- 2,656
Woo Hoo!!
Ya know I would love to say I knew it all along but we were just running out of materials
Physics Phil
-
6th October 2013, 11:34 AM #88
Hi Stuart, once every 165 days... not quite real time. I'm curious about the knife edge pulley thing, all I can guess is it's some kind of low friction low movement thing?
Here's a few more pictures of that area.
This is one of the actuators
IMG_0405s.JPG
The silicon carbide girder structure
IMG_0406s.JPGIMG_0407s.JPG
The wire system, with counter weight, and that red pulley assembly must be the "knife edge pulley"
IMG_0408s.JPG
Regards
Ray
-
6th October 2013, 01:33 PM #89SENIOR MEMBER
- Join Date
- Oct 2012
- Location
- Australia
- Posts
- 764
Woot! 10 Points..... well done.
Livermore's LODTM lathe would be the closest to a active compensation lathe, with 7 laser interferometers maintaining tool position relative to a super invar reference frame, now that's a DRO!
lol, that's at least 2 twice my sample rate.
I have some more photos of the knife edge pulley system for the LHC dipoles.
IMG_1671.jpg
HighRes
IMG_1672.jpg
HighRes
IMG_1673.jpg
HighRes
IMG_1674.jpg
HighRes
IMG_1675.jpg
HighRes
IMG_1676.jpg
HighRes
-
6th October 2013, 10:25 PM #90GOLD MEMBER
- Join Date
- Jul 2010
- Location
- Melbourne
- Posts
- 7,770
Thanks for the pictures guys, that clears things up(though they seem to have a problem with the power feed on their lathe, interesting pattern.)
Mine wire mounts certainly arent as that pretty.
Stuart