Ivano LIPPI – 17/06/2003

 

 

Trigger Configurations

 

 

There are 4 basic Trigger Configurations : one is the default and the three other have a subset of the parameters modified for special purpose.

 

·        default  is the reference configuration.

 

 

BTI

Parameter

ST43

RE43

DEAD

XON

RON

SET

LTS

AC1

AC2

ACH

ACL

Bit Setting

41

1

30

0

0

111

11

00

11

01

10

 

 

TRACO

Parameter

HISM

HTPRF

HTMSK

LTMSK

SLMSK

PRGCOMP

LTF

LTS

REUSEI/O

Bit Setting

0

1

0

0

0

10

0

0

1

 

 

TSS

TSM

Parameter

CARRY

GHOST1

GHOST2

CARRY

GHOST

Setting

enabled

enabled

enabled

enabled

enabled

 

·        synchro  is especially used for the synchronization procedure.

 

All Low Trigger are disabled and the correlation tolerance is tightened :

 

 

TRACO

TSS

Parameter

LTS

HTMSK

LTMSK

PRGCOMP

THCRL

Bit Setting

1

1

1

01

011

 

·        debug  is especially used to check the BTI and TRACO performance.

 

The TSS and TSM actions are neutralized and the data of a single TRACO is output :

 

 

TSS

TSM

Parameter

CARRY

GHOST1

GHOST2

TRMSK

CARRY

GHOST

Setting

disabled

disabled

disabled

only 1 Traco enabled

disabled

disabled

 

·        backup  is used to check the backup running mode of the TSM.

 

Both the TSMD are run in backup mode, no other chip is touched.

 

 

 

 

synchro

 

The synchronization procedure was used also to find the best Drift Velocity estimate.

 

3 different settings were used with three different drift velocity values:

 

Name

ST43

RE43

DEAD

corresponding to

sync381

40

2

29

Tmax = 381.2 ns   Vdrift = 55.1 µm/ns

sync388

41

1

30

Tmax = 387.5 ns   Vdrift = 54.2 µm/ns

sync394

42

0

30

Tmax = 393.7 ns   Vdrift = 53.3 µm/ns

 

 

default

 

17 different trigger configurations were tested varying a single parameter :

 

Name

Chip

Modified Parameter

Description

default

 

none

 

T01def

TSS

THCRL = 001

Only High Theta Passed to Traco

T02def

TRACO

LTMSK = 1

Single Low Always Discarded

T03def

BTI

LTS = 00

Low Trigger Suppression Disabled

T04def

BTI in Theta

LTS = 00

Low Trigger Suppression Disabled

T05def

BTI

ACx = 01

All Tolerance Parameters to 1

T06def

BTI

ACx = 10

All Tolerance Parameters to 3

T07def

TRACO

LTS = 1

Low Trigger Suppression Enabled

T08def

TRACO

PRGCOMP = 01

Correlation Tolerance to 1

T09def

TRACO

PRGCOMP = 11

Correlation Tolerance to 3

T10def

TSS e TSM

CARRY = 1

Carry Disabled in all TS system

T11def

TSM

HINREC = 1

Recover High Inner Enabled

T12def

TSS

GHOST2 = 1

Ghost Type 2 Rejection Disabled

T13def

TSS e TSM

GHOST1 & 2 = 1

Ghost Type 1 & 2 Rejection Disabled

T21def

TRACO

HTMSK = 1

Single High Only with Theta

T22def

TRACO

SLMSK = 1

Single Outer Preferred

T23def

TRACO

HTPRF = 0

High Quality Ignored in Sorting

T24def

TRACO

REUSEI/O = 0

Disable Recycling of Uncorrelated

 

debug

 

9 different trigger configurations were tested varying a single parameter :

 

Name

Chip

Modified Parameter

Description

debug

 

none

 

T01deb

TSS

THCRL = 001

Only High Theta passed to Traco

T02deb

TRACO

LTMSK = 1

Single Low always discarded

T03deb

BTI

LTS = 00

Low Trigger suppression Disabled

T04deb

BTI in Theta

LTS = 00

Low Trigger suppression Disabled

T05deb

BTI

ACx = 01

All Tolerance parameters to 1

T06deb

BTI

ACx = 10

All Tolerance parameters to 3

T07deb

TRACO

LTS = 1

Low Trigger suppression Enabled

T08deb

TRACO

PRGCOMP = 01

Correlation Tolerance to 1

T09deb

TRACO

PRGCOMP = 11

Correlation Tolerance to 3

 

 

backup

 

6 different backup mode options of TSM were tested :

 

Name

Description

backup

 

T01bck

Single Outer Disabled

T02bck

Single Low Enabled

T03bck

Uncorrelated Disabled

T04bck

Single Low Enabled + Carry Disabled

T05bck

Single Low Enabled + Carry Disabled + Single Outer Disabled

T06bck

Single Low Enabled + Carry Disabled + Single Outer Disabled + Consecutive Disabled