Dee Patch Panel contents and layout


Link to Dee Assembly page
Link to Dee Mechanics page
 

2007
Patch panel drawing, J Hill 10.8 pgl

2004
Photos of HV connector proposal, patch panel versus envelope, J Williams 1.10 link
Drawing of proposed HV connector mounting on Dee, J Williams 1.10 jpg


Patch Panel Technical details

27.1.04    The list of EE Patch Panel services below is PROVISIONAL
                However, all items must be specified by July 04.
                Cabling memo, P Bloch doc pdf 
                Cabling tasks, P Bloch xls pdf
Patch panels to be rotationally symmetric from one Dee to the neighbouring Dee.
EE and ES services – cable length, estimated costs, problems and schedules W Funk 13.1.04 ppt
Cable tray reference documents, W Funk link

Ducts 6B/6A to14B/14A for one Dee = 9 sectors
Ducts 5A/5B to 1A/1B and 18A/18B to 15A/15B for other Dee = 9 sectors 

Fibre Optic bulkhead fittings
From W Funk, 22.1.04 txt :
MF-B2 and MF-B3 fibre optic bulkhead fittings, by Diamond,   proposed at the patch panel.
Yellow ribbons exiting Dee+double MEM, from W Funk, 26.9.03 txt :
TOTAL SUM of yellow ribbons per Dee+double MEM: 14+72+18+1=105
(in cabling mockup up to now: 120 (spares!).
NOTE! One of these needed for the double MEM, thus does NOT come to the EE patch panel!
Per Quadrant at the Patch Panels: 52 bulkhead fittings. Per Dee 104 bulkhead fittings.
 (8 spare yellow ribbons per Dee will be laid in the cable ducts (1 per respective duct with yellow ribbons) 
but these will be left flying and will be without their respective bulkhead fittings)
For both EEs: 416 bulkhead fittings

Low Voltage bulkhead fittings
40 LV sets per Dee = 80 cables (supply+return). 
Baseline, per set, is one 50mm2 Cu +2.5V supply and one 50mm2 return to/from the patch panel.
On the inside of the patch panel, a split to 2x16mm2 supplies (A, D) and 2x16mm2 returns (A, D),
in case A and D eventually has to be supplied separately from the external power supplies.
EB LV bulkhead fittings being designed by W Funk & W Lustermann

LVR control and sense
40 LV cable sets per Dee. 1 twisted pair sense to each of the 40 LV distribution boards.
=> 40 sense twisted pairs.
FE cards = 33+32+9+25+33+17 = 149/Dee
=> 149 Low Voltage Regulator cards per Dee
=> 149 LVR card inhibits (each a twisted pair) per Dee
=> 40 + 149 = 189 twisted pairs in total
Assume 12 cables per Dee each with 16 twisted pairs
=> 12 bulkhead fittings/Dee 

High Voltage bulkhead fittings
Baseline, Lemo-Redel  multiway connector with 51 pins = 24 core + 24 screen + 2 spare pins + 1 pin.
30.9.03 notes on provisional connector pin outs, K Bell et al txt
69 standard SCs/Q, requires 69 anode + 69 dynode lines
9 partial SCs/Q, requires 9 anode + 9 dynode lines
Total/Q 78 anode and 78 dynode lines = 3 *24 anodes + 3* 24 dynodes + an extra 6 anode lines + 6 dynode lines.
Total HV L-R multiway connectors, 6/Q + an extra 6 anode lines + 6 dynode lines/Q.
How to deal with the extra 6's not yet defined
Per Dee, need a total of 13 multiway connectors of 51 pins each
The 13th connector needs to have 12 anode and 12 dynode lines
Observation - the HV multicore cable is split into 13 and 12 coaxes for laying between EE and the intermediate patch panel
                       - the 13/12 could respectively contain the extra 12 anode and 12 dynode lines

Detector Slow Control (DCS) bulkhead fittings
Discussion on DCS integration + proposed PP fittings, W Funk, G Dissertori, D Cockerill, 20.2.04 txt
Baseline: 3 different multi twisted pair cables for the 3 different DCS systems:
   
     PTM (Precision Temperature Monitoring)  21 twisted pairs/Q
          HM (Humidity Monitoring)  4 twisted pairs/Q
          TSS (Temperature Safety System) 9 twisted pairs/Q 
Assume the same number of types and sensors as in EB (1 Quadrant=1 SM).
Problems and questions: Is the number of sensors extrapolated from EB correct? 
Is the baseline humidity sensor radiation resistant up to EE radiation dose?

Ducts 9B/11A (other Dee rotationally symmetric)
1 bulkhead fitting/Q for DCS 1*11mm2 cable, 21 twisted pairs     
1 bulkhead fitting/Q for DCS 1*7.2mm2 cable, 9 twisted pairs
1 bulkhead fitting/Q for DCS 1*5.8mm2  cable, 4 twisted pairs
Need input from G Dissertori.

Cooling bulkhead fittings
Duct 5A (6B) 2 cooling pipes, 14mm diameter
Duct 5B (6A) 1 cooling pipe, 14mm diameter
Duct 4A (7B) 1 cooling pipe, 14mm diameter
Duct 4B (7A) 1 cooling pipe, 14mm diameter
Duct 3A (8B) 2 cooling pipes, 14mm diameter plus 1of 12mm and 4 of 10mm
Duct 3B (8A) 1 cooling pipe, 14mm diameter
Duct 2A (9B) 1 cooling pipe, 14mm diameter
Duct 2B (9A) 3 cooling pipes, 14mm diameter
Duct 18A (11B) 3 cooling pipes, 14mm diameter
Duct 18B (11A) 1 cooling pipe, 14mm diameter
Duct 17A (12B) 1 cooling pipe, 14mm diameter
Duct 17B (12A) 2 cooling pipes, 14mm diameter plus 1of 12mm and 4 of 10mm
Duct 16A (13B) 1 cooling pipe, 14mm diameter
Duct 16B (13A) 1 cooling pipe, 14mm diameter
Duct 15A (14B) 1 cooling pipe, 14mm diameter
Duct 15B (14A) 2 cooling pipes, 14mm diameter
Total of 24 bulkhead fittings for 14mm diameter pipes/Dee
Total of 2 bulkhead fittings for 12mm diameter pipes/Dee 
Total of 8 bulkhead fittings for 10mm diameter pipes/Dee 

Fibre optic monitoring bulkhead fittings     
Duct 2B (9A other Dee)
One laser pipe of  9mm diam, per Dee, containing 6 fibres, to 6 separate bulkhead feedthroughs at the patch panel.
Inside Dee, 4 used, 2 spare.
4 Level 2's/Dee, 20 level 1's per Dee
A level 1 diffuser serves up to 8 standard SCs (200 crystals). 
Also through patch panel:
  bias voltage for PN diodes, LV for ASIC using TP bus
   
                                :  signals from ASICs
   
                                :  clock/trigger/control from token ring on Dee to external double MEM box

2 level 2 ASICs per Dee and 10 level 1 ASICs per Dee, each with 2 channels = 24 channels 
=> 24 of 2.2mm coax ASIC signal cables = 24 separate? bulkhead fittings/Dee

4 of 1.5x2mm2 multiway (5 diff. pairs) cables for TP bus for PN bias?, ASIC bias?=4 bulkhead fittings /Dee.
                                     Note: bulkhead fitting should be same as for EB
6 of 2x10mm2  multiway (? diff. pairs) cables for token rings for clck/trigger/control=6 bulkhead fittings/Dee
                                    Note: bulkhead fitting unique to EE since it is not needed on EB.
Need input from Marc Anfreville, Saclay.

Gas purge bulkhead fittings
Ducts 15B (14A) and 5A (6B)
=>
1 bulkhead fitting for an  8/6 mm Cu pipe for  purge/Q
=> 1 bulkhead fitting for a  6/4 mm Cu sniffer pipe/Q


Photos of mockups

 duct1_mini.JPG (7481 bytes)   duct3._miniJPG.jpg (9029 bytes)

                                                  Duct model photo 1                 Duct model photo 3