next version of new shaper‐‐

Next version of new shaper‐Next version of new shaper‐digitizer module g

Vladimir Zhulanov, Yury UsovVladimir Zhulanov, Yury Usov

BINP, Russia

2009.03.19

1

Update of barrel electronicsUpdate of barrel electronicsCurrent electronicsCurrent electronics

BelleQ – T – D

Sh ADCShaper-ADC

SuperBelleFADC pipelineFADC, pipeline

Shaper-DSP

SuperBelle

2

SuperBelleFADC, pipeline, DSP on shaper board

Shaper DSPShaper‐DSP

Dec.2008 – manufacturedJan 2009 – shipped to KEKJan.2009 shipped to KEKJan.2009…now – firmwaredevelopment, tests

Few modifications have been made

3

NoiseNoise

Some ADC or PCB layout problem

4

Dynamic rangeDynamic range

5

Good linearity It’s needed to use custom Voltages in VME bus:5 7.5, 12 15

Status (1)Status (1)

Things to be done with this board:

1. ADC replacement.1. ADC replacement.

2. coherent noise

3. Small firmware update: S/N, temperatures read out and a few other thingsg

6

Status (2)Status (2)

W d th d t t ith ti l li kWe need the new readout system with optical links to make the design ECL data collector and test waveform analysis on the Shaper‐DSP module!waveform analysis on the Shaper DSP module!

The new version of the Shaper DSP module will beThe new version of the Shaper‐DSP module will be designed by April 2009: 

1 ADC redesign1. ADC redesign2. The capacitors issue: Tantalum  ceramic (???)3 Supply3. Supply4. Tail compensation for FAM

7

Thank you

8

BackupBackup

9

Waveform fittingWaveform fitting

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→−−−−−−=∑ −

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10

ECL FINESSEECL FINESSE

11

Shaper ADC and ECL FINESSEShaper‐ADC and ECL FINESSE

12