Feb. 10, 2005 1 Daisuke Naito, Okayama University in collaboration with Japanese si-soft group R. Tanaka, D. Naito (Okayama U.), R.Takashima (Kyoto U. of Education), T. Kondo (KEK), K. Hara, K. Nakamura, Y. Nakamura (Tsukuba U.) I. Ueda (ICEPP, U. of Tokyo) and helped by G. Gorfine (NKHEF) ATLAS Barrel SCT ATLAS Barrel SCT geometry update plan geometry update plan
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Feb. 10, 2005 1 Daisuke Naito, Okayama University in collaboration with Japanese si-soft group R. Tanaka, D. Naito (Okayama U.), R.Takashima (Kyoto U.
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Feb. 10, 2005 1
Daisuke Naito, Okayama University in collaboration with Japanese si-soft group
R. Tanaka, D. Naito (Okayama U.),R.Takashima (Kyoto U. of Education),
T. Kondo (KEK),K. Hara, K. Nakamura, Y. Nakamura (Tsukuba U.)
• A class named SCT_OuterSide group the elements like Sensor, ABCDChip, e.t.c…This class is defined complex shape that is made of air.
• These complex shape is made by boolean volume.• The boolean volume makes a complex shape with subtracting a b
ox or a tube or adding a box or a tube.• SCT_InnerSide is made by the same way.
Feb. 10, 2005 9
Structure of the detail geometry(3)
• SCT_DetailBaseBoard includes elements named SCT_FarendFacing and SCT_CoolendFacing.
• SCT_DetailBaseBoard is made up of 5 elements.
Feb. 10, 2005 10
Dimensions and Coordinates• We gave all dimensions and coordinates names.• We calculate those coordinates with minimum geometry
information.• We avoid that code has magic numbers.
Feb. 10, 2005 11
Dimensions and Coordinates(2)• For example, an coordinate of an element named bb2
that makes up SCT_DetailBaseBoard is calculated follows: bb2PosZ = bb1PosZ + 0.5*l_bb1 + 0.5*l_bb2, where l_bb1 is length of bb1, l_bb2 is length of bb2.
Feb. 10, 2005 12
Some Results of Detail Simulation (1) :
weight
weight of detail module 24.28 g
weight of real modules 24.77 g
difference -2.0 %
Use Hepvis Event Viewer
Module No. Weight [g]
23 24.54
25 24.51
40 24.78
372 24.59
469 24.67
485 24.90
497 24.76
522 24.90
579 24.84
580 24.91
581 24.71
583 24.83
917 24.98
958 24.88
average 24.77
KEK measured the weight of the actual 14 SCT modules
Feb. 10, 2005 13
Some Results of Detail Simulation (2) :
radiation length
Feb. 10, 2005 14
Verification of the module position
Feb. 10, 2005 15
Summary
• Detail geometry of the SCT barrel module was created from drawings.
• Detail geometry was installed into the SCT GeoModel program.