ESR RPC Link Warsaw 8'7'03

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ESR RPC Link Warsaw 8.7.03

• RPC Link Board Integration
• FW RPC installation schedule

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Link Board Box Integration

• Initially
• Barrel 60 LBB i.e. 12 / wheel distributed
  around yoke
• End caps 48 LBB distributed around disks
• 12 LBB in HE cutout zone for RE1/1
• ? Keep cable length short ( ? 12 m )
• Boxes require cooling ( 250 W )
• safety - grounded shield ( metallic box )
• - smoke detection
• - N2 inertion
• ? Complicated project for 10812 boxes with up to
  96 cables/box
• ? Engineering design in Finland
• ? Cost and production in nobodys scope

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January 2003 _at_ Warsaw

• 108 LLB to become 6 U VME like crates ( mechanics
  ) put inside standard CMS racks on the metallic
  structures
• ? Cooling safety provided by CMS racks
• ? Points of concern ( mainly in barrel)
• - length of skew clear cable
• - space in the racks on the metallic structures
• 12 LLB for RE1/1 remain special
• - choke point occupancy
• - cable length

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HE cutout zone
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Skew of Kabelwerk cable
F.Loddo , A.Ranieri
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Degradation of signal
F.Loddo , A.Ranieri
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Cabling RE1/2 and 1/3 signalsLink Board Boxes in
Racks
L max 11.5 m
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YE-1 Racks on Towers
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YE-1 Racks on Towers x side
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Barrel cabling
S.Bally
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Barrel cabling
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Rack occupancy YB0
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Rack occupancy YB1
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Rack occupancy YB2
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RE production and installation

• Initial RE system tailored to fit within the
  available budget
• 3 RPC stations at low ? i.e. RE1/2,3 ( China )
• RE2,3/2,3 ( Pakistan )
• 1 HV channel/chamber modules in USC ( CAEN )
• - magnetic field radiation tolerances
  irrelevant
• - easy upgrade as new funds become available
• 2 LV channels/chamber ( analog digital )
• - 48V provided by AC-DC converter to distri mods
  in racks

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The proposed initial system
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Coverage of initial system?4 stations up to
1.24 3 up to 1.6
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Initial system
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Gap production schedule
?
?
?
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Schedule YE1
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Status summary

• Cut Italian Bakelite delivered to Korea
• for 20 FW RPC pre-series according to EDR
  recommendation
• Korean oiling facility ready being commissioned
• Gap production schedule in accordance with CMS
  V33
• RE installation schedule
• station 1 is critical since behind CSCs
• station 3 installation underground
• LBB only RE1/1 ( 12 special boxes ) on critical
  path
• all other LBB in crates fitted in the racks on
  the metallic structures