GCT Q-M EDR, CERN, 2/10/07 C. Foudas - Imperial 1

1
Q/M-Bit GCT Task

• The tasks of the muon system
• - Receive from RCT 252252 QM 504 Bits.
• - Each of the 18 RCT crate transmits 28
  QM bits (18x28504).
• - Hence, the Q/M bits are ?-segmented as
  the come to GCT.
• - The Q/M bits need to be transmitted to
  GMT ?-segmented.
• - All 504 bits are transmitted to GMT ? No
  data reduction
• - The data are transmitted to GMT via 12
  cables.
• - All other physics triggers require 61
  cables.
• - The cable specification was inherited by
  the new GCT along
• with the task requirement.

2
The Muon System

• The Muon system
• 3 Processing Cards (3 SNAP12, V5, Cross-Point
  Switch, MicroController.
• Custom uTCA backplane (2 more Cross-Point
  Switches) and uTCA crate.
• 3 More Cards which convert to the Infiniband
  protocols (now under further review)
• 12 Infiniband cables connect with GMT

Optical Input from the Source Cards
12 Infiniband Cables to GT
3 Processing Cards
Link Converters (Infiniband)
This Subject of todays review
uTCA Backplane
3
GCT Current State of Affaires

• The Electron Trigger has been commissioned and M.
  Hansen and A. Tapper are in the process of
  removing the last differences between firmware
  and emulator.
• The Jet trigger is proceeding in a satisfactory
  way. The new Wheel Card seems to work and
  communications and data transfers have been
  established from a Jet Leaf via the Wheel and all
  the way to the Concentrator Card (G.
  Sidiropoulos). It seems at the moment realistic
  to install the Jets Trigger also by November 07.
  Several Months of data validation will follow (A.
  Taper, G. Iles, G. Sidiropoulos, M. Hansen) but
  it should go faser then the electrons since the
  Jets are moving into a system that debugged and
  working.
• Source Card Links In the process of changing to
  100 Mhz oscillators (M Stettler).
• GCT to GT Links Studies continue (G. Iles)
• It appears that M. Stettler, who is back at CERN
  in Feb. 08, be free to concentrate his efforts
  to the Muon System

4
Preliminary Plan

• Processor Card should go out at the end of 07
  and be back sometime in March 08.
• The Backplane should be out to the manufacturer
  sometime in late Spring 08
• We should have Backplane and Processor Cards in
  Summer 08.
• The Links to GMT remain an unknown but that
  should be rectified in a few months.
• Need to produce a resource loaded plan by the end
  of the year