Difference between revisions of "CDC Straw Sag photos"
From GlueXWiki
(→Gravitational Sag of various tubes) |
|||
| Line 4: | Line 4: | ||
Kapton straw and the Euclid mylar straw. With the straws supported | Kapton straw and the Euclid mylar straw. With the straws supported | ||
at both ends, the is slightly more sag in the kapton than either of | at both ends, the is slightly more sag in the kapton than either of | ||
| − | the mylar straws | + | the mylar straws but very hard to measure. |
| − | With the straws supported it at one end, the katon straw sags about | + | With the 76cm long straws supported it at one end, the katon straw sags about 4-5mm |
| − | + | more than either of the mylar straws. One can roughly see this in the pictures below. | |
| − | [[Image:Straw sag | + | The left-hand straw is the Stone kapton straw. The middle straw is the Lumina mylar |
| + | straw and the right-hand straw is the euclid mylar straw. Note that these straws are | ||
| + | about 1/2 the length of the final straws in the CDC. | ||
| + | [[Image:Straw sag 03.jpg|thumb|none|300px|Straw Tube Sag]] | ||
| − | [[Image:Straw sag | + | [[Image:Straw sag 04.jpg|thumb|none|300px|Straw Tube Sag]] |
Revision as of 10:21, 6 May 2009
Gravitational Sag of various tubes
We have tried to compare the gravitational sag of three identical lengths of the straw material. The Lumina mylar straw, the Stone Kapton straw and the Euclid mylar straw. With the straws supported at both ends, the is slightly more sag in the kapton than either of the mylar straws but very hard to measure.
With the 76cm long straws supported it at one end, the katon straw sags about 4-5mm more than either of the mylar straws. One can roughly see this in the pictures below. The left-hand straw is the Stone kapton straw. The middle straw is the Lumina mylar straw and the right-hand straw is the euclid mylar straw. Note that these straws are about 1/2 the length of the final straws in the CDC.
