Engineering Drawings of ATLAS detectors (by Graham Beck at QMW)
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Engineering Drawings of ATLAS detectors (by Graham Beck at QMW)
Some recent Cambridge designs are listed here:
The OPAL silicon microvertex detector.
A double-sided silicon detector for OPAL.
Several variable-pitch detectors for ATLAS-SCT design optimisation.
Multiguard devices for high voltage optimisation study.
N-on-n ATLAS Barrel Prototype (1996)
P-on-n ATLAS Barrel Design (1998)
Follow the links for some pictures (microscrope photos) of ATLAS detectors:
Sintef Barrel corner
Micron Barrel corner
Hamamatsu barrel corner
CiS wedge corner (poly biassed detector)
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The UK barrel n-on-n ATLAS detector (1996 design by Cambridge and QMW) is of nstrip-on-nbulk design with polysilicon biassing and 768 strips (plus 2 dummies) at 80micron pitch. Overall dimensions are 64x63.6mm, with an active area of 62x61.6mm. The design uses a multiguard edge termination with the bias rail contacted to an implant to act as the first guard. There are two pstop isolation masks, allowing the option of either individual pstop or common pframe isolation. The current design fully satisfies 1996 ATLAS detector specs. The following drawings are available:
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The UK barrel p-on-n ATLAS detector (1998 design by Cambridge and QMW)
is of pstrip-on-nbulk design with
polysilicon biassing and
768 strips (plus 2 dummies) at 80micron pitch.
Overall dimensions are 64x63.6mm, with an active area of 62x61.6mm.
The design uses
a multiguard edge termination with the bias rail contacted to an
implant to act as the first guard.
Some images or postscript files are available for this design:
The circular fiducials should be background-free, ie metal on a
non-metal background, or holes in metal. The minimum area
of uniform background is illustrated here.
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