1. EMC front-end Electronics
Valerio Bocci
INFN sezione di Roma
Isola d’Elba General Meeting 30 May- 5 June , 2010
A. Papi, C. Cecchi, P. Lubrano (INFN Perugia)
V.Bocci,G. Chiodi, R.Faccini,R.Lunadei,L. Recchia,D. Ruggieri, (INFN Roma)
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci 1

2. SuperB EMC structure BaBar Crystals are radiation damaged.
Need replacement
SuperB EMC Barrel =
BaBar EMC Barrel
5760 CsI(Tl) Crystals
SuperB EMC Forward
= 4400 Lyso Crystals
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci 2 2

3. Front End main design choise
Barrel read-out: Pin diode (Babar structure constraint)
Forward readout:Pin Diode or APD under test
Charge preamplifier + 2 range gain
12 bits digitalizazion + 1 bit range
Special range for calibration purpose
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

4. Old ADB Energy resolution
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci 4

5. Energy Resolution new ADB
MeV
% Low Range
% High Range
% Range selected/ 1
6.87
219.73 10
0.69
21.97
100
0.07
2.20
200
0.03
1.10
300
OVF
0.73
1000
0.22
9000
0.02
Low Range
High Range
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci 5

6. EMC 5 Channel readout protoype
Crystals Mechanics
Ranges Lvds 5
Shaper
Range
Board
VFE Board
Differential
ADC
Board 5 5
ranges
analog
Coded
PIN Or
APD
ADC CLK
I2c
VME
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

7. EMC 5 Channel readout protoype (single ended ADC)
Crystals Mechanics
Ranges Lvds 5 5
Diff2Single
Single
Ended
ADC
Board
Shaper
Range
Board
VFE Board 5 5
ranges
analog
Coded
PIN Or
APD
ADC CLK
I2c
VME
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

8. Very Front End Board HV CSP EMC VFE Board 5 CSP Channels
Buffer
Diff or SE
DRV
EMC VFE Board
5 CSP Channels
Enable to mount: Cremat, Hamamatsu, Home Made CSP
HV distribution
CSP
Buffer
Diff or SE
DRV
CSP
Buffer
Diff or SE
DRV
CSP
Buffer
Diff or SE
DRV
CSP
Buffer
Diff or SE
DRV
Annecy SuperB XII General Meeting March 15-19, Valerio Bocci

9. Three Type of CSP under evaluation
Cremat 1.4 V/pC
Hamamatsu 1 V/pC
Homemade 1 V/pC
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

10. LABE Made Charge preamplifier
charge sensitive preamplifier in radeka configuration and push pull output
Luigi Recchia & Antonio Papi simulation and optimization.
Home made in LABE (Electronic LAboratory) in Rome.
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

11. Very Front End Board EMC VFE Board 4 Layers 5 CSP Channels
Enable to mount:
Cremat,Hamamatsu,Home Made CSP
HV distribution
Mounted on crystals
Interface with EMC range Board
24 May in production
Estimated delivery time
for test 7 June week
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

12. EMC Ranges shaper board
X5 Channels
Analog
Rcv from FE
x.5
CR200
Analog
Diff Output
Signal out
1bit range
LVDS
x32
CR200
ADC
CLK
Switch
Logic
Switch_Ctrl
Cmp_stretch
DAC
Thr
Setting
ProAsic3
FPGA
Range
info
Analog
Coded
Fast
Comparator
I2c
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

13. EMC Range Board EMC Range Board 8 Layers VME size
5 Channels Analog Differential input
5 Channles Analog Differtial output
1 Main clock input
Long line I2c control input
Range info analog coded
Lvds output for Range bit
24 May in production
Estimated delivery time
for test 14 June week.
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

14. Differential2Single ended Board
Utility board to convert differential signals
to Single Ended signals.
Four layer PCB 5 channel
Diff to SE
DRV
Diff to SE
DRV
Diff to SE
DRV
Diff to SE
DRV
Diff to SE
DRV
24 May in production
Estimated delivery time
for test 7 June week
Elba SuperB General Meeting 30 May- 5 Jume Valerio Bocci

15. Conclusions There are three boards in production
VFE boards comes the 7 June must be tested and integrated with mechanics
The support Se2diff board come in the same week permit to use single ended ADC
Range Shaping Board is coming june need to be programmed and tested
Annecy SuperB XII General Meeting March 15-19, Valerio Bocci