Some relevant (non ATLAS) reading on the web:

 Grounding and Shielding for Sound and Video
 Supplying High-Energy Physics Detector Systems  
 chip capacitor parasitics
 Subtleties count in wide-dynamic-range analog interfaces
 Avoiding common EMI problems in medical electronics
 NOISE IN PCB DESIGN
 FAQ on magnetic materials
 skin effect calculations - (PCB striplines)

Transparencies from Feb 00 grounding and shielding meeting
input loop sensitivity to electric fields  Si strip detectors are read out using a charge sensitive amplifier configuration. Essentially we have an op amp with high gain and bandwidth which changes its output voltage in response to current flowing into its negative input terminal. This output voltage is fed back to the negative input terminal via the feedback capacitor giving a negative feedback current which compensates the current which is coming in from the detector. If the detector is AC coupled as in the Atlas strip detectors then no DC curent will flow into the amplifier input and the output voltage of the amplifier will stay fixed. If now a charged particle passes through the detector it will create electron- hole pairs which drift in the electric field in the silicon. This charge movement in the field then produces a current pulse proportional to the distance moved and the number of  electron hole pairs  with a time structure determined by the drift time of the electrons and holes, and the field geometry.    .
input loop sensitivity to magnetic fields
voltage signals generated between modules due to common impedance coupling
voltages generated on shield due to common impedance coupling
shield voltage minimised by shorting module grounds and shield via cooling tube
Calculation of injected noise from module to module or module to screen