NRC Rack in USA15 Discussion on Monday with Martin J. and Agostino L. In short: our proposals do not work Current ATCA shelves incompatible with LHC racks – 14slot – front to back cooling – 6slot – push-pull cooling But ATCA will be the future – Maybe a company will produce shelves compatible with current LHC counting rooms ? – Maybe counting rooms will be adapted ? LS1: CSC and FTK only ATLAS customers – patch solutions needed – If same solution, even better FTK will install ATCA shelves in ~1year FTK needs 24 boards I guess Pixel would need the same… 3/19/20131

Vertically Cooled Rack It is the standard Proper smoke detection Good for TTC crate Ugly solution for ATCA: – 6U ATCA shelf rotate of 90° – 6U + 2U + 2U could fit close to each other 3/19/20132

Back-door cooler Not the standard, but used by racks with ROS No smoke detection Bad for TTC crate Possible solution for ATCA: – 6U crate should work, maybe an air deflector needed? 3/19/20133

Next Steps FTK US colleagues: – Ted Liu FNAL (CMS) – Yasuyuki Okumura post-doc UChicago Meeting tomorrow (Martin, Agostino, Alberto) in USA15 possibly with a SLAC 2U shelf Agostino: – Contact Philippe F. – Contact Schroff (German company) Nicoletta: – Ask about CMS solution – Ask Asis about custom solution… and promising answer from Shai Benchmuel 3/19/20134

Thank you for your . Always nice to get s from SLAC employees J, SLAC is a longtime partner of Asis. I was in touch with Vincent Bobillier and Markus Joos and I also visited CERN a few months so I am familiar with the project. Are you on the same team? We are coming out with a new chassis in June that should be easily converted to vertical flow. I need to investigate a little more. Please see attached datasheet. Can you tell me a little more about the requirements? Max Power distribution per blade, RTM (W)? Max Cooling per blade required, RTM (CFM)? Please let me know if you would like to have a phone conversation to discuss. Best Regards, Shai 3/19/20135