STAR Trigger Data Definitions
2002 Run
Data from the L01 crate is
available at Level 1 and Level 2
Data from the L2 DSM Crates
is only available at Level 2
L01 Crate DSMs
DSM Boards |
#Bytes |
Origin |
#Bytes |
Data description |
Last DSM |
16 |
CTB |
2 |
Multiplicity (ADCs or MIPs) |
CTB |
2 |
2-bits Topology and LED info 14 bits: Unused |
||
ZDC |
2 |
1-bit East analog sum over low threshold 1-bit West analog sum over low threshold 1-bit East analog sum over high threshold 1-bit West analog sum over high threshold 1-bit East TAC over threshold 1-bit West TAC over threshold 1-bit East+West attenuated analog sum over threshold 9-bits TAC difference |
||
Special Trigger |
2 |
5-bit definition of which detector is requesting the
special trigger 3-bit definition of which trigger is being requested 8 bits: Unused |
||
BEMC and EEMC |
2 |
Semi-defined 10 bits from BEMC
6 bits from BEMC |
||
BBC data |
2 |
Undefined |
||
FPD data |
2 |
Undefined |
||
RHIC |
2 |
2-bits blue and yellow ring strobes 7-bits polarization information 7 bits: Unused |
||
Bunch Crossing |
32 |
Internal |
6 |
48-bit bunch crossing number |
Internal |
1 |
0:119 bunch type number |
||
N/A |
25 |
Unused |
||
ZDC |
16 |
ZDC |
1 |
1 byte East PMT1 ADC value |
ZDC |
1 |
1 byte East PMT2 ADC value |
||
ZDC |
1 |
1 byte East PMT3 ADC value |
||
ZDC |
1 |
1 byte East analog sum: PMT1 + PMT2 + PMT3 |
||
ZDC |
1 |
1 byte West PMT1 ADC value |
||
ZDC |
1 |
1 byte West PMT2 ADC value |
||
ZDC |
1 |
1 byte West PMT3 ADC value |
||
ZDC |
1 |
1 byte West analog sum: PMT1 + PMT2 + PMT3 |
||
ZDC |
1 |
1 byte East PMT1 attenuated ADC value |
||
ZDC |
1 |
1 byte East attenuated analog sum: PMT1 + PMT2 + PMT3 |
||
ZDC |
1 |
1 byte West PMT1 attenuated ADC value |
||
ZDC |
1 |
1 byte West PMT2 attenuated ADC value |
||
ZDC |
1 |
1 byte West attenuated analog sum: PMT1 + PMT2 + PMT3 |
||
ZDC |
1 |
1 byte East+West attenuated analog sum |
||
ZDC |
1 |
1 byte East TAC |
||
ZDC |
1 |
1 byte West TAC |
||
CPA |
64 |
CTB - East |
16 |
8 2-byte multiplicity measurements (ADC or MIP) each
covering Dh=0.5, Df=p/2 |
CTB - West |
16 |
8 2-byte multiplicity measurements (ADC or MIP) each
covering Dh=0.5, Df=p/2 |
||
MWC - East |
16 |
8 2-byte wire counts each covering Dh=0.5, Df=p/2 |
||
MWC - West |
16 |
8 2-byte wire counts each covering Dh=0.5, Df=p/2 |
||
Quad DSM |
16 |
CTB - East |
2 |
2-byte multiplicity measurement (ADC or MIP) covering Dh=1, Df=2p |
CTB - East |
2 |
Topology and LED information |
||
CTB - West |
2 |
2-byte multiplicity measurement (ADC or MIP) covering Dh=1, Df=2p |
||
CTB - West |
2 |
Topology and LED information |
||
MWC - East |
2 |
2-byte wire count covering Dh=1, Df=2p |
||
MWC - East |
2 |
Unused |
||
MWC - West |
2 |
2-byte wire count covering Dh=1, Df=2p |
||
MWC - West |
2 |
Unused |
||
EMC L2 |
16 |
BEMC |
6 |
3 2-byte words from each of 3 Layer 1 BEMC DSMs
|
EEMC |
2 |
1 2-byte word from 1 Layer 1 EEMC DSM
|
||
N/A |
8 |
Unused |
||
BBC L2 |
16 |
N/A |
N/A |
Undefined |
FPD L2 |
16 |
N/A |
N/A |
Undefined |
Special Trigger |
16 |
TCD |
6 |
16 3-bit Special Trigger requests, one from each of 16
detectors |
N/A |
10 |
Unused |
||
TOTAL |
208 |
|
|
|
L2 DSM Crates
CTB L0 |
256 bytes |
240 1-byte CTB slat values, either ADCs or MIPs 16 bytes - Unused |
MWC L0 |
128 bytes |
96 1-byte MWC subsector wire counts 32 bytes - Unused |
BEMC L0 |
240 bytes |
150 6-bit high tower values 150 6-bit trigger tower values 15 bytes - Unused |
BEMC L1 |
48 bytes |
18 2-byte data words from the 15 Layer 0 DSMs:
12 bytes - Unused |
EEMC L0 and L1 |
80 bytes |
40 6-bit high tower values in 4 Layer 0 DSMs 40 6-bit trigger patch values in 4 layer 0 DSMs 4 bytes unused in 4 Layer 0 DSMs 16 Undefined bytes from 1 Layer 1 DSM |
BBC L1, FPD L0 and FPD L1 |
80 bytes |
16 1-byte BBC East inner annulus ADC values 16 1-byte BBC West inner annulus ADC values 16 1-byte BBC East inner annulus TAC values 16 1-byte BBC West inner annulus TAC values 8 1-byte BBC East outer annulus ADC values 8 1-byte BBC West outer annulus ADC values FPD L0 Undefined FPD L1 - Undefined |