nSQP’s

DBM Interfaces Meeting

D. Giugni / INFN Milano

D. GiugniDBM Interfaces Meeting 2011-09-28

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nSQP’s

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Project framework

• The 4 DBM telescopes (per side) are hold by the BPSS (Pixel Beam Pipe Services Support)

• They are supported by the “cruciform” at about Z=800mm

• The services, both cooling and electrical, are routed along ONE nSQP (the C34).

D. Giugni DBM Interfaces Meeting 2011-09-28

C34 nSQP

BPSSVertical

Direction

C1

C2 C3

C4

C5

C6 C7

C8

View from side C

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DBM Interfaces Meeting 2011-09-28 3

to DCS (and interlock for the SCT)

to Heater control and

power supply

to interlock and DCS

to BPR

from PR

Temperature sensors on return tube (one of which is redundant)

Temperature sensors on modules

Sensor of the fluid temperature after the heater (for control)

Sensor of the fluid temperature after the heater (for safety)

Heat exchanger

Detector structures

Hea

ter

Filter

Capillary

Cooling

• 1 Pixel loop = 220W @ -25C• Max Press = 13bara• Evaporation temperature -15C<T<+20C

D. Giugni

PP1PP0 DBM

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Electrical Services

• DBM looks like an IBL half stave with 4x3=12 FE chips instead 16.

• Both power and readout will belong to IBL readout

– Power lines and DCS reach the IBL AXON Connector on the IDEP – The signal lines (DTO, CLK and CMD) reach the IBL optobox where a

dedicated Optoboard reads-out the signals.

Since an IBL OptoBoard can handle 16FE chips, the 16-12=4 extras can be used to extract the trigger.

D. Giugni

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Scopes and goals of the meeting• Main scope is to define the interfaces:

– Connector type, number and position next to the DBM telescopes– Position of the fitting for the cooling line.

• ...and who designs what:– PP0 Boards [CERN]– Power and Readout Bundles [CERN]– Connector to the OptoBox (Conn. Board) [CERN]

– DBM Structure [Toronto]– Boiling Channel [Toronto]– Thermal coupling [Toronto]– DBM Flex [?]

D. Giugni

C34 nSQP

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Documentation available

• DBM Top level block connectivity ATL-IP-ES-0178 [Jacek]• DBM Top Level Schematic ATL-IP-ES-0184 [Jacek]• DBM Signal & Cable Board Schematic ATL-IP-ES-0183 [Jacek]• IBL Connector Board Schematic ATL-IP-ES-0176 [Steven]• IBL Connector Board Gerber Files ATL-IP-ES-0177 [Steven]• IBL OptoBoard Schematic (in the INDICO Agenda Material Section)

[Shane]

D. Giugni

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Prototypes Production Plan

• Hope to get from this meeting the green light for the design:– Interfaces (at PP0 and at PP1).

• Cooling fittings location• Cooling coupling• Connectors• Boards

– Services functionality.• Wires type, number and connectivity.

• Procurement – Wires, Shield, Braids (4 wks leading time), – PP0 boards (6wks)– IBL Connector Board (4wks)– AXON Connector and pinout (?)

D. Giugni

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Prototypes Production Plan (2)

• Middle November can start producing the fist full DBM harnesses.

• Production time (bundling and soldering) ~2 wks

• If something goes wrong there is time for a second try before Xmas

D. Giugni