90 likes | 192 Views
AFC Module Meeting Friday - May 21, 2004. Report on the Window burst test Edgar Black IIT. MTA Absorber Design Progress. This windows are of a nominal 21cm diameter The diameter was selected to fit on the forced flow absorber inside the 40cm. diameter magnet bore (lab G magnet)
E N D
AFC Module MeetingFriday - May 21, 2004 Report on the Window burst test Edgar Black IIT
MTA Absorber Design Progress • This windows are of a nominal 21cm diameter • The diameter was selected to fit on the forced flow absorber inside the 40cm. diameter magnet bore (lab G magnet) • The design called for 25psi MOP and rupture up to 100psi • The bellow type new configuration was aimed to achieve a minimum of 105 micron thickness at the center • Data from the burst test on this window will be used to verify the window design parameters for MICE
Receiving window inspection CMC report (partial sample) • the holes and the plane on right side. • Bolt circle constructed of points of intersection between • DIM BOLT CIRCLE OF HOLES ON RT SIDE= LOCATION OF CIRCLE B.C.RT SIDE UNITS=MM • AX MEAS • X 0.00000 • Y 0.00000 • Z 0.00000 • D 218.02053 • RN 0.04067 • Holes measured as cylinders, starting with the hole • at 90 deg and going anti-clockwise. Measurements shown • are Polar Radius, Polar Angle, Diameter and Vectors I,J,K . • DIM HOLE AT 90 DEG= LOCATION OF CYLINDER RT 90 HOLE UNITS=MM • AX MEAS • PR 108.98744 • PA 89.98625 • D 3.21533 • V -0.00063 -0.00067 1.00000 0.00000 • DIM RND1= ROUNDNESS OF CYLINDER RT 90 HOLE UNITS=MM • AX MEAS • M 0.10550 • DIM HOLE AT 150 DEG= LOCATION OF CYLINDER CYL1 UNITS=MM • AX MEAS
Measurements results • Photogrametry technique give the minimum thickness to be 190 microns • Gauged thickness on the burst window material at the center measured 101 microns • The above measurements included 15 micron total of the material (spray paint) coating both sides of the window • Donald Summers reported a central thickness of 117 microns (no paint)
Burst test • No fatal events as predicted, a safety analysis was submitted before the test for approval • Pressure was apply to the window/plate volume on increments of 5psig • A leak developed over the elastomer gasket at 133psig • Changed the gasket 2.5mm instead of .8mm diameter plus vacuum grease • Repeated test, burs pressure at 144psig