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SiD LoI preparation workshop, SLAC 3th March 2 Spanish Network LoI contribution Iván Vila Álvarez Instituto de Física de Cantabria [CSIC-UC]

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Page 1: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

SiD LoI preparation workshop, SLAC 3th March 2009

Spanish Network LoI contribution

Iván Vila Álvarez Instituto de Física de Cantabria [CSIC-UC]

Page 2: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

2Spanish R&D Network ,2nd March '09, I. Vila

Caveat

In this talk just the current Spanish contribution the LoI

See tomorrow’s R&D session for a complete review of Spanish consortium activities.

Page 3: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

3Spanish R&D Network ,2nd March '09, I. Vila

Members and R&D lines

IFCA (Santander)TRACKING; mechanicsalignment; uStrips.

IFIC(Valencia)ACCEL, VTX, TRACKING;

BPM, mechanics, DEPFET

CNM, UB, URL (Barcelona)VTX;TRACKING; sensors,

R/O electronics; DEPFET

USC (Santiago de Comp.)VTX; TRACKING, 3D

sensors, DEPFET

CIEMAT (Madrid)ACCEL; CALO;

mechanics, RPC R/O

Page 4: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

4Spanish R&D Network ,2nd March '09, I. Vila

RD on Sensors: IRuS for alignment

Statement of the issue: The ultimate alignment precision will be

achieved by track-based alignment algorithms. BUT …

….a real time monitoring of the vtx/tracker stability/deformation during detector normal operation (thermal, magnetic loads) and pull-push procedure is a MUST.

Requirements: Alignment resolution should be at least as

good as the intrinsic hit resolution. Avoid as much as possible the increase of

material in the tracking volume.

Page 5: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

5Spanish R&D Network ,2nd March '09, I. Vila

AMS-01 innovation (W. Wallraff)= 1082 nm

IR “pseudotracks”

1-2 µm accuracy obtained

Transmittance~ 50%

= 1075 nm

• Optimization of sensors not included from beginning

of sensor design lower transmittance achieved~20%

• 180 deg beam splitters in the middle of the tracker

produce

back to back beams measured by modules

• Laser spot reconstructed with 10 µm resolution (1st

sensor)

9 TEC disks (18 petals) reconstructed using 2 beams with

50 µm accuracy (100 µm required in CMS)

FittedMeasure

d

Up to 4 ladders

traversed

CMSTEC

RD on Sensors: IRuS for alignment (2)

Page 6: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

6Spanish R&D Network ,2nd March '09, I. Vila

RD on Sensors: IRuS for alignment (3) Advantages:

Similar sensors for tracking and alignment. Same r/o electronics. Same code as for track alignment No precision mechanics, mechanical transfer does

not contribute to the error budget Minimal material:

In CMS forced to put the lasers and optics within the tracking volume.

Al the lasers collimators could be put outside the tracker volume as long as the sensors are transparent enough in such a way that the same laser can go through multiple layers

The name of the game is to increase the sensor transmittance

Page 7: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

7Spanish R&D Network ,2nd March '09, I. Vila

R&D program

Starting with a conventional microstrip desing baseline design (p on n; AC coupling, 50 um pitch) introduce minimal design modifications to boost sensor IR transmittance.

1st - Validation of optical simulation software with material samples. (done)

2nd - Production of IR baby sensors. (on progress)

3th - Bench and beam testing of sensors

Page 8: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

8Spanish R&D Network ,2nd March '09, I. Vila

Current proposal for ILD’s FTD

Page 9: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

9Spanish R&D Network ,2nd March '09, I. Vila

Detector simulation

Page 10: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

10Spanish R&D Network ,2nd March '09, I. Vila

Simulation and material validation

Page 11: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

11Spanish R&D Network ,2nd March '09, I. Vila

Simulation and material validation(2)

Page 12: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

12Spanish R&D Network ,2nd March '09, I. Vila

Baby sensors being produced at CNM

Page 13: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

13Spanish R&D Network ,2nd March '09, I. Vila

About the LoI content on aligment

Concerning the tracker alignment there is a 1.5 page on the current LoI draft proposing “two methods” FSI a IR laser alignment.

The two technics are very complimentary: IR laser system strong on measuring transverse displacement while FSI strong measuring linear displacements.

A smart combination of both monitoring technologies would be the optimal solution

Page 14: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

14Spanish R&D Network ,2nd March '09, I. Vila

Final remark

During the pull-push procedure beyond rigid desplacements deformations and vibrations may be an issue.

We should consider introducing well know monitoring technologies in aeronatics and civil works based on fiber optics sensors. (accelaration, strain, temperature)

Those sensors should be integrated on the composite layout of the FC support they add zero material

Page 15: SiD LoI preparation workshop, SLAC 3th March 2009 Spanish Network LoI contribution Iv á n Vila Á lvarez Instituto de F í sica de Cantabria [CSIC-UC]

15Spanish R&D Network ,2nd March '09, I. Vila

INTEGRATED FOS

For the Track structure would be interesting to use a embedded fiber optic sensor.

more precise and reliable data It could be use 2 side solution

Better understanding of the results

Useful to quantify the termical strain

Integrated FOS in a FC strut


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