Physic prototype : completion

1
Physic prototype completion
Only one new Slab from February 2005 ?
Problem Wafer delivery and quality !!!
We have ordered (end march 2005) 100 matrices
from INP in Russia in order to complete the
central part of the prototype.
2
Silicon Sensors characterization set-up

• I(V) ? Leakage Breakdown
• I(t) ? aging
• 36 pixels must be polarized

Conductive Foam
3
Silicon Sensors new characterization set-up

• new system with 36 contacts done with points gone
  up on springs allowing us to perform
• I-V curve
• C-V curve

• C-V meter
• Pico ammeter
• High voltage power supply
• temperature monitoring
• humidity monitoring

4
Silicon sensors Czech production (1/2)
April 2005 in collaboration with people from
Prague Different chemical passivation Different
gluing protocol (Temp., Time and glue)
results not very conclusive
wafers already manufactured cannot be recovered
August2005 10 new processed wafers from ONsemi
Before gluing stable After gluing Leakage
increase Vbr seems stable
5
Silicon sensors Czech production (2/2)
September 2005 5 new processed wafers from
ONsemi
Before gluing stable After gluing Leakage
increase but after one month recovery ? need
confirmation Vbr seems stable
6
Matrices Silicone New Russian production
C-V curves

• September 2005 24 matrices
• Yield 50
• 12 matrices glued ? one slab !
• Problem depletion bias

• Novembrer 2005 22 matrices
• Yield 0 !!
• Problem depletion bias

7
Matrices Silicone New Russian production

• January 2006 24 matrices
• Yield 33 (8 matrices)
• Yield 62.5 by releasing the spec
• Mean leakage _at_ 200V 200 nA
• Few wafer with high dep. Bias

• New Russian production
• 100 ordered
• 70 delivered
• 20 good ? total yield 28,6
• First prod. 75

8
Silicon sensors other producer ?

• Looking for new producer
• Corean production of 50 matrices (February
  2006)
• Brasil
• order of 100 matrices
• First delivery for test 10 matrices Feb. or
  March 2006
• Other contact
• India 2 producer ? more new during LCWS06
• Japan Hamamatsu ? offer for 30 wafers
  19 k (NRE) 16 k (30 wafers)
• We have 500 raw wafer at EP (we will send 50 to
  ONsemi)

9
Test beam DESY (II)

• March 2006 Test
• Ecal
• Structure 1,2 and 3
• 15 Slabs, 30 layers
• 180 matrices ? 6480 pixels
• Motorized XY support
• Drift chamber (200 ?m resolution)
• Slow control (power supplies and temperature
  monitoring)
• VME DAQ
• 15 full days of run

10
Calibration ? Cosmic test bench
Calibration of the slab must be done before test
beam At EP we have just single slab DAQ ? just
go no go test after slab assembly ? Must be done
at DESY ? Need VME DAQ
Cosmic calibration test bench is ready at DESY

• End of December 2004 at EP
• One structure (5 slabs)
• 10 days ? 1 million of cosmic events

Calibration 1
11
Test beam CERN

• Summer 2006 Test
• Ecal
• Structure 1,2 and 3
• 15 Slabs central part
• 15 Slabs bottom part
• 270 matrices ? 9720 pixels
• Motorized XY support
• Beam hodoscope ??
• Slow control
• VME DAQ
• xx full days of run

Picture soon !!