bml chamber assembly maria curatolo lnf/infn. maria curatolo l.n.f. / i.n.f.n. frascati...
TRANSCRIPT
BML chamber assembly
Maria Curatolo
LNF/INFN
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Granite Table Granite table (on 3 feet)
flatness20m over the total surface(4500*2500 mm2) Temperature controlled (8
sensors attached to the granite) T=23.51C (room)
Humidity control (room) H=(50 5)%
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Granite table map
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Jig measurements Combs measurement summaryAv. pitch (all combs):
30.0353 0.0001 (RMS) mmRMS of Residuals (with Av. Grid):
2.9 m (all combs) 1.9 m (best 7)Av. Y-coord. (all combs)
121.7260.009 (RMS) mm 2.7 m (best 7)
Precision tower (with interfaces) measurement summary (see table)
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Combs
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Precision towers
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Precision towers
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Jig assembly procedure Granite ruler for correct alignment of the
reference side towers and comb reference blocks
Shimming 30 m under all the intermediate comb feet for compensation of difference in diameter of tubes and endplug reference surface
Orthogonality of outer comb side B to the line of the reference side towers granite ruler and square
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Jig assembly procedure
Parallelism of outer comb side A to outer comb side B equal distance between them at the two extremities , near ref towers and near non-ref towers
Same method for the intermediate combs
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Jig fixation to the granite table Comb fixations to the granite table
allow for sliding in z-direction (fixed point at the ref side extremity)
Comb movement in x-direction limited to 50m in case of accidental clash
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Vacuum system realized in separate sectors (3 for every comb)
Very simple gluing machine (industrially treated for ant adherence)
Very finely adjustable speed crane Sequence of gluing steps minimizing
the number of tower interface changes
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Assembly steps
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Assembly steps
Frascati 21/7/2000 ATLAS - MDT Site ReviewMaria Curatolo L.N.F. / I.N.F.N.
Assembly table