Trigger System StatusTrigger System Status

Adele Di CiccoAdele Di Cicco

86.4 cm28.8 cm 9.6 cm

T600 pixel definitionT600 pixel definition

Trigger SystemTrigger System

Local TriggerControl

Unit

Local TriggerControl

Unit

Local TriggerControl

Unit

Local TriggerControl

Unit

T riggerControl

Unit

T riggerSuperv isor

T riggerControl

Unit

T riggerControl

Unit

T riggerControl

UnitTC1

TI1

TC20

TI2 0

N bit request

N bit request

N bit request

N bit request

Trig

ger

NPM

T

Externa

lSig

nal

Adele Di Cicco Napoli 4 Febbraio 2004

LTCULTCU

FiredChannel

Recorder

RS232Interface

F_O R

M UX18x1T est

Pulse

Discriminators outputASUMInput

DAC DAC DAC

+

-

18 Discriminators

T hresholds

XILINX Spartan 2

6 6 6

1818

4

2

RS232 I/O

RJ11

RJ11

OR

Co

nn

ec

tor

Ch

an

ne

lO

utp

ut

Co

nn

ec

tor

RS

23

2C

on

ne

cto

r

MASK

Main technical specificationMain technical specification

Trigger definitionsTrigger definitions

TCU gives TCU gives GlobalGlobal trigger trigger when a MAJORITY when a MAJORITY condition is met incondition is met in

PMT logic.PMT logic.AWS logicAWS logic..

TCU gives TCU gives Local TriggerLocal Trigger according toaccording to data data

recorded during drift time.recorded during drift time.

GLOBAL/LOCAL trigger BUSY logicGLOBAL/LOCAL trigger BUSY logic

After a trigger request TS gives the DRIFT signal to all v789 boards

During a DRIFT, TCU doesn’t accept any other trigger request and decides globality/locality of event.

After the DRIFT time, TS according to topology of event gives global trigger to all crate or local trigger to fired crates .

during a GLOBAL_BUSY (DAQ dead time for acquisition data download from all chambers) it accepts only a Local Trigger request

Flow ChartFlow Chart

PMTTrigger condition logic

Global trigger request

Local trigger request

Global drift or busy?

Acquire all crates

No trigger

Acquire only fired

pixels

Local drift or busy?

PMT-pixels coincidences logic

Pixels Majority/Pattern logic

PMT local trigger request?

Wire planes coincidence Logic (pixel fired)

No Trigger request

AWS

Discriminator

LTCU - PMT AWS - LTCU

Discriminator

TCU

TS

PMT

Rack 11Rack 13

Each 100s TCU makes pictures of detector

Window runs on the detector

Majority condition is checked for each window

If majority condition (>1) is verified,horizontal

scanning will start.

General Idea on Partial majorityGeneral Idea on Partial majority

Spot detectionSpot detection Freeze detector

It Sums pixels in the stripeand it stores pixels in shift

register

Majority Condition is verified?

It Sums two adjacent stripes

ACC=0

Start horizontal scanning

It sums two adjacentpixels

Sum equal 0?

ACC=ACC+RowSum

ACC equalTotal pix

end

ACC=0

end

ADDR[4:0]

SYNCBLK

ANDBLK

9INA

INB

MASK

9MASK 9

AA

BB

13

A0_B[4:0]

A1_B[5:1]

A2_B[6:2]

A3_B[7:3]

A4_B[8:4]

A5_B[9:5]A6_B[10:6]

A7_B[11:7]

A8_B[12:8]

FLASH ENC REGA

1

ADDRESSADDRESSGENERATORGENERATORFLASH

CLK

PIPELINE

SYNCBLK

5

5

CentralUnit

REGB

13

13

SUMREG

ACC

PISO BLK

Status of all systemStatus of all system

LTCU prototype is finished and tested in the SER Tests on DAQ are going on these days (Pietro,Paolo,Adele). The board’s documentation has been done (Adele,Maurizio). Test will be finished at the end of February Test at the CERN will be start on beginning of March (Adele)

TCU block scheme definition is in progress New scheme can be proposed