LumiCal mechanical LumiCal mechanical & &

sensors designsensors design

Wojciech Wierba

J.Błocki, E.Kielar, J.Kotuła, K.Oliwa, L.Zawiejski

FCAL Workshop, IFJ PAN Cracow, 06-07.05.2008

LumiCal inside LumiCal inside ILDILD

•LumiCal can be mounted to special support fixed to the ‘construction’ pipe.•Cables and cooling water pipes can be feed out in the gap between TPC and ECal endcap.•Space for connectors•Access to connectors•LumiCal has to be centered on the outgoing beam.

Gravity!Gravity!

VX

D ?

Lum

iCal ~

250

kg

Lum

iCal ~

250

kg

LHCal ~1000 kg ? LHCal ~1000 kg ?

Beam

Cal ~

200 k

g

Beam

Cal ~

200 k

g

How to fix the How to fix the LumiCal?LumiCal?

x & y initial x & y initial positioning better positioning better than 0.5 mmthan 0.5 mm

z initial positioning z initial positioning better than 0.1 mmbetter than 0.1 mm

Temporary support Temporary support for detector for detector assembly on the assembly on the beam pipebeam pipe

Fine x, y, z position Fine x, y, z position adjustmentadjustment

Mechanical designMechanical design

Two options 1. Silicon sensors glued on both

sides of every second tungsten plate

2. Silicon sensors glued on one side of each tungsten plate

Cooling systemWater pipes going around half plate. Estimated water flow – a few liters per minute (P mean = 20 W, Δt = 0.1 ºC)

Space for sensors Space for sensors & &

electronicselectronics

Sensor prototypeSensor prototype

Masks for prototypes Masks for prototypes have beehave beenn ordered ordered from Hamamatsu (~2 from Hamamatsu (~2 months, ~20 k€)months, ~20 k€)

Sensors order depends Sensors order depends on money (price from on money (price from ~900 €/40 pcs. order to ~900 €/40 pcs. order to ~1400 €/10 pcs. order ~1400 €/10 pcs. order per one tile)per one tile)

„„Dummy” sensor readyDummy” sensor ready

Fan outFan out

Traces on Kapton Traces on Kapton foil (50 foil (50 µm)µm)

Double sided Double sided Trace 150 µm, Trace 150 µm,

space between 150 space between 150 µm (can be smaller)µm (can be smaller)

Sensor pads will be Sensor pads will be glued with glued with conductive glue to conductive glue to fan out tracesfan out traces

SummarySummary – Mechanical – Mechanical designdesign

Very challenging project for mechanical Very challenging project for mechanical design.design.

We have to choose between single sided and We have to choose between single sided and double sided versiondouble sided version..

Opening and closing the half barrels with Opening and closing the half barrels with accuracy better than ~5 accuracy better than ~5 µm.µm.

Work in progress on precise adjustment of x, Work in progress on precise adjustment of x, y, z and tilt position of LumiCal.y, z and tilt position of LumiCal.

Need detailed study on cooling.Need detailed study on cooling. More information about ‘construction’ tube.More information about ‘construction’ tube.

SummarySummary – Sensor – Sensor designdesign

Sensor prototypes will be ready by the end of Sensor prototypes will be ready by the end of this year. this year.

Fan out have to be tested (crosstalk, stray Fan out have to be tested (crosstalk, stray capacitance, conductive gluing, bonding on capacitance, conductive gluing, bonding on Kapton foil).Kapton foil).

„„Dummy” sensor have to be equipped with Dummy” sensor have to be equipped with capacitors and tested with fan out – can be capacitors and tested with fan out – can be used for FE electronic tests.used for FE electronic tests.

Test beam prototype - the design should Test beam prototype - the design should start soon start soon