EIB Status, tests and production

1
EIB Status, tests and production

• - Introduction
• - QM2v1 Tests
• CSIST
• cosmic _at_ lapp
• - Planning (QM2v2 and FM/FS production)

SRL on behalf of the Lapp team TEM Subdetector
electronics - 01/11/06 _at_ CSIST
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EIB Functionality

• Interface between EFE-EDR ? Signal bus
• Signal Trigger on a threshold
• 9 Pmts connected to one EIB
• 36 EIBs in total of which 24 EIBs with Trigger
  function
• Regulation for Analog supply voltage Trigger
  and EFE

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EIB on the calorimeter
ECAL 5 rows
ECAL 4 rows
B side side12 triggers 6 Non
triggers
A side side12 triggers 6 Non
triggers Mirror of B new
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Trigger schematic
Amplifier
Comparator
Flip-flop
Bus Buffer
Dynode
ETRG
100 ns
Auto reset at t 400 ns
Threshold for 100 MeV signal ? 2 mV gt Signal x 10
Tbusy-Treset 1?s
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QM2v1-EIB

• 12 Layers 6 signals layers and 6 planes
• Material Polymide Coating
• Class 5 Constraints 0.15 mm
• Size 320 mm x 60 mm
• Smaller granularity 2 sub-EIB (4 pms trigger
  5pms)
• Mirror A side

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QM2v1 Test bench set-up_at_CSIST (I)
4 boards tested EIB_A_T,EIB_A_NT, EIB_B_T,EIB_B_N
T
9-14 October 2005
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QM2v1 Test bench Setup
EIB
4 High gains
EFE
4 Low gains
1 dynode signal
Analog dynode Signal x10
Trigger response Yes / no
PMT
Analog dynode signal
DAC command
Intermediate board
Main trigger LV1 from Generator Or from trigger
(standalone)
BTRG
Data acquisition on PXI
EFE data used to calibrate Trigger data
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QM2v1 EIB_A/B_NT _at_CSIST
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Bus tests - Gain
Expected values found for the 4 boards
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Bus tests - Saturation
Half of the expected values .. (for the 4 boards)
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Bus tests Modified Board
After a modification on the clock distribution
(sloppy edge)
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Bus tests Saturation bis
Nominal values After a modification tested on 2
boards (A side)
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BUS tests - Summary

• Consumption OK
• Good ordering (mirror AB) - PMT fired one by
  one OK
• Regulation OK
• Logical Signal shapes OK but the clock
• The 9 Pmts fired together
• Pedestals for the 9?9 channels (values and rms)
  (OK)
• Gains OK
• Saturations (OK)
• The EM EIB was used as reference and to check the
  test bench is properly running

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QM EIB_A/B_T _at_CSIST
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Trigger tests - Efficiency
Above the threshold
30 led amplitudes ranging from 0.1 to 2.5 Volts
same good behavior for the 2 boards , for
each pmts
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Trigger tests - Noise
The nominal threshold 100 MeV (20 mV)
No random trigger for 1000 events
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Trigger tests Hit pattern
20 different sequences, no failure for both
boards
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Trigger tests- Summary

• Consumption OK
• Good ordering (mirror AB)- PMT fired one by one
  OK
• DAC threshold measurement OK
• EFE dynode pedestals shifts 50 mV OK
• The 9 Pmts fired together or one PMt alone
• Efficiency (effective threshold) OK
• Noise measurement for different threshold OK
  (gt15 mV)
• Hit pattern tests (input and output
  comparison) OK
• To be tested in standalone mode timing

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QM Test bench set-up_at_CSIST
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First coated QM
In total the 4 QM2v1 eibs has been coated
Side view
Top view
First look very high quality Total weight 513
gr Checked at LAPP, with mechanics OK
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Tests at LAPP

• Studies on the clock signal
• tests with the EDR
• at CERN
• At LAPP cosmic data (using 3 QM2v1 boards)

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Studies on the clock signal
CLK ADUM Input
CLK ADUM Output
(16 Mhz)
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Studies on the clock signal
Modification on the QM2v1 a buffer is added
After introducing the buffer
In addition, tests were made on synchronization
times between BDR FPGA (sequencer) and ADC
The BDR is sensitive to delay of 5-8 ns (
induced by the adum and buffer EIB_EM )
(16 Mhz)
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Tests at LAPP with EDR

• Modified QM2v1 tested
• - at CERN with the EDR, JINF and backplane
• with A.Kounine, V. Koutsenko
• pedestal runs worked well
• at LAPP on the calorimeter, 27 pms , HV Brick,
  EPSFE, EDR,JINF backplane (cosmic data)
• (S. DiFalco, Zuhao Li, SRL, Thanks to A.Kounine
• and V.Koutsenko for providing materials)

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Tests at LAPP with EDR
The third EIB(qm2v1)
2 EIBs (qm2v1) on the FM ecal
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27 HV CABLES
ECAL
EIB to EDR cables
LECROY BUS
LEMO connector
3.3
1 AMSWIRE cable adapted for ext trigger
1 AMSWIRE cable
220 V


220 V
(Only to reprogram Flash ROM in case of need)
PC Linux (Windows 2000 Or XP) ( run as root )
To be soldered on back plane
3.3
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5
BRICK LOW VOLTAGES
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Tests at LAPP with EDR
HV 800 Volts (default values), 27 pmts
powered MIP 75-80 ADC channels
ADC channels
ADC channels
Special events selections on extreme anode
channels (top and bottom) 4 out of 6 left for
MIP measurement
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Tests at LAPP with EDR
Lecroy HV PS corresponding to 2105 gain ( 650
Volts) 9 pmts powered MIP 15 ADC channels
ADC channels
ADC channels
Special events selections extreme anode channels
(top and bottom) 4 out of 6 left for MIP
measurement
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Cosmics tests - Summary

• 3 eibs (qm2v1) connected , 1 EPSFE, 1 EDR and 27
  Pmts powered together
• Consumption OK
• (-2.7 309 mA 3.8 482 mA)
• Regulation OK
• before regulator 2.44
  3.49
• after regulator (-1.99 -2.00)
  (2.99, 3.01)
• Logical Signal shapes OK
• Pedestals for the 27?9 channels (values and rms)
  (OK)
• MIP seen for two HV (ie gains) (OK)
• DAC values set and measured (OK) on both eibs

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Cosmics tests - Summary

• - It worked globally well, despite the HV values
  could not be set
• - Promising results. Final and complete results
  to be ready by the next TIM
• Need further training to use properly EBP, JINF
  and the complete chain
• It would be nice to have a EBPJINFEDREPSFE
• system available for future tests
• - Thanks to A.Kounine and A. Koulemszine for all
  and for repairing the damages on JINF connector.

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QM2v2 Planning
Modifications (including the 2 buffers)

• As suggested by G.Ambrosi and M.Capell, the
  overall FM/FS pcb production should be started as
  soon as possible
• PCB modified for the boards. One qm2v2 EIB_A
• Documentation ready sent to Giovanni A. ( 18
  December)
• Components
• Active, should arrive this week
• Passive list sent to Michael Capell together
  with the one for the production (8 weeks, tbc)

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QM2v2 tests

• Functionality (as qm2v1, at CSIST BDR)
• Vibration at CSIST and (thermal stress ?)
  before coating
• Mechanical pieces needed, F.Cadoux proposal
  (design at LAPP, production at CSIST ?)
• ReFunctionality tests after coating at CSIST
• Thermal Vacuum tests at LAPP
• Tests with EDR and EPSFE, at CERN or LAPP
• (as suggested and decided on last TIM meeting,
  A.Lebedev, G.Ambrosi and Doctor Ting)

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Production Planning

• After positive tests on the QM2
• PCB should identical to the QM2v2 one. Files
  ready
• Documentation ready sent to Giovanni A. (end of
  December)
• Components
• Active ordered. maximum delay 12 weeks
  (beginning of April) including cables and
  connectors
• Passive list sent to Michael Capell together
  with the one for the production (8 weeks, tbc)

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EIB_at_CSIST
Files sent to Giovanni should be reviewed before
to send to Elaine and Frank
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EIB_at_CSIST - Plans
See A.Lebedev for the complete list
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Production tests

• Functional tests (as QM2v1, at CSIST BDR)
• Vibration at CSIST
• Mechanical pieces should be ready (cf QM2v2)
• ReFunctionality tests after coating at CSIST
• VT at LAPP
• Physics tests at Cern
• Test beam scheduled mid September-October
• Tested EIBS should be mounted on the ECAL in
  August

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Summary