11 April 2013

Thomas Bergauer

WP9.4 SiTra integration into common DAQ

AIDA WP9.4 meeting

WP9.4 Status

2

WP9.4 (silicon tracking) status

• Within WP9.4 task, there is only one deliverable (due M39, April 2014)

• Status of baseline deliverable:– Re-use old SiLC sensors done.– APV25-based front-end done.– Conventional mechanics done.– readout system hardware done.– Offline software done – Online (DAQ) software (re-implementation ongoing)– Integration with common DAQ missing

Thomas Bergauer11 April 2013

WP9.4 Status

3Thomas Bergauer11 April 2013

Status:• DAQ system based on APV25 readout chip (developed for CMS)• Three versions:

• APVDAQ: lab-system for 4 APVs/boards; 1kHz using 1 card• SiTra DAQ: 16 APVs/board; 3kHz (Zero Suppressed)• Belle II System: 48APVs/board; up to 20kHz

APV25chips

Front-endhybrids

Rad-hardvoltage

regulators

Analog level translation,data sparsification andhit time reconstruction

~2mcoppercable

Junctionbox

~10mcoppercable

VME boards

Data Acquisition System

WP9.4 Status

4

DAQ Details

• Compatibility with (old)

EUDET TLU box exists

• Has been used in previous

testbeams with EUDET

telescope (since 2009)

• offline merging of data

streams

• Uses “smart” mode, i.e.

saves trigger number with

each event

• Needs external trigger

(Scintillator)Thomas Bergauer11 April 2013

WP9.4 Status

511 April 2013

Readout System Components

Repeater BoxLevel translation, buffering

FADC+PROC (9U VME)Digitization, zero-suppression,

hit time reconstruction

Thomas Bergauer

WP9.4 Status

6Thomas Bergauer

Readout Chip: APV25

• Developed for CMS (LHC) by Imperial College

London and Rutherford Appleton Lab – 70.000 chips installed

• 0.25 µm CMOS process (>100 MRad tolerant)

• 128 channels

• 192 cell analog pipeline

enables 160xTclock latency

• 20-80 MHz clock frequency (40MHz nom.) using

peak mode

• 50 ns shaping time low occupancy

• Noise: 250 e + 36 e/pF

must minimize capacitive load!!!

• Multi-peak mode (read out several

samples along shaping curve)11 April 2013

WP9.4 Status

7Thomas Bergauer11 April 2013

APV25 – Hit Time Reconstruction

• Possibility of recording multiple samples (x) along shaped waveform (feature of APV25)

• Reconstruction of peak time (and amplitude)by waveform fit– Offline now– LUT in Hardware

for Belle II

• Is used toremove off-timebackground hits 0 50 100 150 200 250 300

0

5000

10000

15000

20000

25000

30000

S peak

tpeak

Measurement

WP9.4 Status

8Thomas Bergauer11 April 2013

• DAQ online software was ported recently from old LabWindows/CVI

system to Linux/ROOT-based system– Basic functionality available

– implementation of sophisticated run modes ongoing (ADC delay scan,

calibration scan,…) to be done by the end of the year

– Offers modular system

– Dummy EUDAQ producer exists, interface to new software seems to be possible

Status DAQ software

WP9.4 Status

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Summary

• WP9.4 deliverable (hardware) will be available in summer this year – Sensors, FE electronics, mechanics, DAQ

Hardware (mid-size System)

• DAQ Software re-implementation ongoing– Basic functionality available– Modular design– TLU integration (stores trigger number)– Interface to EUDAQ possible via EUDAQProducer

Thomas Bergauer11 April 2013