CMSEElogo38x52mm.jpg (120642 bytes) CMS ECAL Endcaps 
UK Group
CMS EE HV distribution

CMS EE HV distribution Things:

1U = 1.75 in

One Quadrant of CMS EE has xx full supercrystals and xx specials, = 78 total per quadrant = 156 per Dee

Supercrystals are supplied using 51way Redel SLG.H51 connectors. One connector supplies 12 Supercrystals, so 13 bunched coax cables ("looms") are required per Dee.

This means 26 cables per rack

If the distribution boxes are arranged in quadrants, this means 7 looms per box (sort of)
Or, if the distribution boxes are arranged in octants(?) this means 4 looms per box (sort of)
etc etc...

Our racks are  S2B09 and S2G09 (actually I think this may have changed!)

Rack Wizard : http://glege.home.cern.ch/glege/RackWizard/RackWizard.html

Redel connector spec:
http://kwb.home.cern.ch/kwb/cms/ecal/eeservices/REDEL-HV-KandS.pdf

Redel connector pinout
http://kwb.home.cern.ch/kwb/cms/ecal/eehv/EE-Redel-proposed-pinout.txt
or pretty version
redel_pinout.pdf

OPAL HV distribution drawings:
busbar_support.jpg
dump_circuit_component_list.jpg
eht_dump_&_overvoltage_trip_circuits.jpg
front_panel_detail.jpg
general_arrangement.jpg
overvolt_trip_component_list.jpg
instructions.pdf

 

Page "maintained" by Joolz Williams j.h.williams@rl.ac.uk