SLHC - WP7 Barrel UPDATE onLAYOUT OF SERVICES AT THE BARREL ENDS OPTO PCBS:Sketches describe options after discussion withTony Weidberg (6.6.2007)

Preference for OPTO PCBs to be outside barrelconfines for reasons of accessibility – easier tochange and modify boards during testing andeasier to cool locally, possibly making use of ‘fins’.

There may have to be four boards per module row –easier to fit these in outside.

Each PCB will have one jacketed fibre connectingto it. This will mean 12-way ribbons are split witheach fibre having a measured length to reach themodule row (can be from different ‘barrels’)

TJF 22/06/07

cooling input

exhaust

connectorcable

flat cable

module

rail guides integral with cylinder

SECTION through‘stave’ suggestiononly – not baseline

flat bus cablehousing &LOCALsupport

barrel flange region

exhaust

input

Opto PCBs supported on structural ‘end plate’

Bus housed in localsupport with strip linksto connectors on hybrid

4 readoutPCBsconnections

cool inputconnector

coolingcapillary

power andsensor cableconnectors

BARREL ENDview fromoutside end

exhaustcoolingpipe

TJF 22/05/07

exhaustconnector

1 readout/ttc optofibre connected to top ofeach Opto PCB

coolingfins

4 Opto PCBlayout option

cool input

Z=1000 Z=

1050

R 380

R 490

100

mm

OPTO PCB

MO

DU

LE

coolinginput

power

electricaldata/ttc

barrelflange

barrelflange

single sleevedoptofibre connectsto top of PCB

sensor andpower cablesor cable-tapes

moduleconnector

BUS

TJF 22/05/07Z=

1100

sensor

coolout

barrelendstructure

seal

modulerow endplate withfeedthroughs

BARREL ENDside view

4 Opto PCBlayout option

nbZ ENVELOPEUNDERDISCUSSION !

clip

11.2522.50

0

0

1)Evap. coolingrouting off barrel end. = input = exhaustwill needPressureRelief Valves

n input pipesgo to eachcoolingchannelon cryostat

will needto havemanifolds

TJF 31/05/07

6

4

5

3

4

6 exhaustpipes go toeach ‘old’coolingchannel

exhaustmanifold

45.0

5

6

7

7 7

2) Power cable routing: distribution in PHI depends on space available in cryostat

11.2522.50

0

0

TJF 22/06/07

coolinginputconnector

power cablex2 ie 54 p Quad

thesebelongto samequadrant

3) Optofibre routing:one fibre from each PCBjoins one 12 way ribbon:9 ribbons per quadrant

11.2522.50

0

0

TJF 22/06/07

each single fibreconnects ontoa PCB (nosplice)

= FOUR adjacent Opto PCBs

7 rows

9 rows

11 rows

fibres could berouted in channels

ribbonchannels

Evap.cooling routing offbarrel end.

inputexhaustexhaustmanifold

3

11.2522.5

45.0

rows perQuadrant:

11

9

7

45

3

4

5

6

6

7

6 exhaustpipes to‘old’ coolingchannel incryostat

7 7

input pipesin ‘TRT’channels(need manifolds)

exhaustmanifold

TJF 28/06/07

11.2522.5

45.0

rows perQuadrant:

11

9

7

TJF 28/06/07

exhaustcoolingonly

power andsensor cablesgo in old TRTchannels

power andsensorcables indedicatedchannels