Rack Layout Developments

Murrough Landon - 17 July 2001

http://www.hep.ph.qmw.ac.uk/~landon/talks

Presentation at Mainz

• Pressure to fill Chris Parkmans rack database
• Suggested off-centre rack layout
• Slightly lukewarm response
• Some open questions: holes, internal walls, outlying racks?

Developments since Mainz

• The internal wall really is a wall!
• Final hole layout is now known: central hole now reserved for magnet cables...
• ...so the latency of the off-centre layout is no longer so advantageous

How to agree?

• Holes permit either central or off-centre layout
• Off-centre layout may still have slightly lower latency and has fewer racks with restricted working space
• The racks on the side we arent using still need to be reserved for possible future use by level 1.