Trigger Readout Connection Table

Checked 7/08/01. Prepared by Andrei Sukhanov.

TAC-T0 entry in channel 22 added 08/09/01 without chcking by P. Sarin based on information from W. Skulski

A sketch of the L0/L1 logic can be found here.

Name Source module TDC
slot #		 Chan
nel #		 Virtual
detector		 Trig
bit		 Valid since Note
PN A1C 8 32 GX00 n/a n/a At least 1 hit in negative paddle counter. 3
PP A1D 8 33 GX01 n/a n/a At least 1 hit in positive paddle counter. 3
CC Blue C12B 8 34 GX02 n/a n/a Blue crossing clock
PNPP(n) wide C4B-A8C 8 35 GX03 n/a 6/02 Wide coincidence PN(n)*PP(n). Previously it was CC_delayed from B5B
PNPP wide C4A-B4A-A2C 8 36 GX04 L0.11 n/a PN*PP coincidence
ZTrig D4A 8 37 GX05 L1.7 n/a ZN ZP narrow coincidence
L0 G11C 8 38 GX06 n/a n/a Slightly delayed L0.
L1 TML1O0 8 39 GX07 n/a n/a Generated by TML1 board.
ZN D6A 8 40 GX08 n/a n/a At least 1 hit in negative ZCal
ZP D6C 8 41 GX09 n/a n/a At least 1 hit in positive ZCal
Centrality
Trigger		 A12B-C10D 8 42 GX0A n/a 5404S4 Previously it was PN>2 from A9A.
PP(n) A9B 8 43 GX0B n/a n/a At least n hits in positive paddle counter
CC Yellow C12C 8 44 GX0C n/a n/a Yellow crossing clock. applied 5/26/00, run 3120
PNPP(n) narrow C4C-A8B 8 45 GX0D n/a 6/04 narrow coincidence
PNPP narrow C4D-A2B 8 46 GX0E n/a 6/04 narrow coincidence
ADCGate
 G6B 8 47 GX0F
~G11B		 n/a 6/08
run-3777		 ADC6 Gate for Paddles
TOF Gate
CN B1A 8 16 n/a n/a run 6970 Cherekov negative CFD OR
CP B1B 8 17 n/a n/a run 6970 Cherekov positive CFD OR
CN*CP B2B 8 18 n/a n/a run 6970 CN CP coincidence 40 ns
TN n/a 8 19 n/a n/a run 6970 T0 negative OR
TP n/a 8 20 n/a n/a n/a T0 positive OR
TN*TP n/a 8 21 n/a n/a n/a TN TP coincidence
Crk- TAC ECL-NIM ch 7 8 22 n/a n/a ru 7613 TAC output from cereknov
n/a n/a 8 23 n/a n/a n/a n/a

Note 1

The Notation L0.11 means that this trigger goes to TML0 board input 11. It can be read back as bit 11 at L0 latch register using GetTrigL0Latch()&0x800

Note 2

On 05/23/00 at 1000 (run 3060 Paddle Cosmic) the delay cable for all trigger time signals (TDC09 channels 48:63) were changed from 150 ns  to 190 ns

Note 3

Before 05/23/00 at 1000 ((run 3060 Paddle Cosmic) the PN and PP signals were connected to A1A, A1B respectively.

 

Trigger Scalers Connection Table

The scaler is Caen Model V560N. This is 16 channel 32-bit scaler. It is cleared only on program restart. The scaler value can be obtained using TPhEventBufferInfo::GetScaler(index). The DB column correspond to the channel number in the database table phoffline.daq_scalers

Scaler
Channel		 Name Source Valid
since		 DB Notes
0 ZP*ZN narrow C3.6-D3B 7/10/00 7 Before 7/10 it was connected to D2C
1 PN*PP wide B4A-A2C 5/1/00 8 wide range 38 ns
2 ZN C3.9-D6A 5/1/00 5  
3 ZP C3.10-D6B 5/1/00 6  
4 PP A1B 5/1/00 4 07/21 It was always connected to A1B
5 PN A1A 5/1/00 3  
6 PN*PP narrow A2B 6/2/00 0 narrow coincidence
7 PNPP(n) narrow A8B 6/4 9 narrow coincidence
8 PNPP(n) wide A8C 6/15 n/c wide coincidence. Between 6/14 and 6/15 it was mistakenly connected to A2B
9 vtx*coll A10b run 7928 09/17/01 n/c vertex trigger and collision trigger (PN*PP N>2 narrow)
10 ZN*ZP 15ns*CC D8A 08/09/00 2 This signal is delivered to RHIC
11 L1.1Acc
 TML1.CO.11- G5.03 run 5441
08/11/00		 1 Number of accepted Central Triggers ( L1.O11) previously it was
Number of accepted PN*PPnarrow triggers (L1.O1)
PnPp(n)  Accepted L1.CO4 7494s12 1 Number of accepted Pn*Pp Narrow triggers
12   A12B run 5444 12 Number of applied Central Triggers
13 L1 L1.CO00 7442 13 Accepted triggers
14 vtx*centrall*coll A11A run 7928 09/17/01 n/c vertex trigger and central trigger and collision trigger(PN*PP N>2 narrow)
15 Live Time EMM scalers 3,2 run 7486 15 Live time in microseconds. The cumulative time when DAQ was enabled and not busy. Previously it was not Crossing clock, yellow..

 

Trigger bits

Trigger bits of the L0 board. Accessible using TPhEventBufferInfo::GetTrigL0Latch()

L0
bits		 Name Source Valid
since		 Notes
0 reserved      
1 reserved   run 3525  
2 reserved   run 3525  
3 reserved   run 3525  
4 reserved   run 3525  
5 reserved      
6 reserved      
7 reserved      
8 Heartbeat   06/05/00 Heartbeat generator T=8sec. Provides triggers in absence of the beam for Si monitoring.
9 TimeCal   01/01/00 Time calibrator. It is ON for plastic time calibration runs
10 Pedestal   run 3525 100 Hz generator, switched on for Si Pedestal Run
11 SiCosm   run 3525 Silicon Cosmic Trigger.
Before 06/14 it was PN*PP
12 PN*PP wide   run 3525 Wide gate coincidence of the PN and PP
13 ZTrig0   run 4296 ZCAL trigger
14 CC     Crossing clock
15 Veto     External signal to veto L0 board. Should never be seen.

 

Trigger bits of the L1 board. Accessible using TPhEventBufferInfo::GetTrigL1Latch()

L1
bits		 Name Source Valid
since		 Notes
0 L0 Output of the L0 board.
1 Pn>2*Pp>2 narrow C4C-A8B run 4982 Collision trigger
2 ZTrig DC7-C9B ZCAL trigger after hardware prescaler
3 PnPp narrow C4D-A2B 4982 Moved here from L1.1
4 Vtx A10B 7801 Vertex trigger
5 CT A12B-C10D 5577 Centrality Trigger
6 CVtx A12A 7801 Centrality & Vertex
7
8 0
9 0
10 0
11 0
12 0
13 0
14 L1 Output signal.
15 Busy Generated inside the L1 board

Notes:

  1. L1.1. For runs 3525-4982 was connected to PnPpNarrow.
  2. L1.4. For runs 5441-5575 L1.4 was connected to Centrality trigger
  3. L1.6. For runs 3535-3539 L1.6 was connected to PnPp(n) A8C

 

History of prescaler settings

Run Date P0 P1 P2 P3 P4 P5 P6 P7
n/a n/a all L0 PNPP>0 ZTrig n/a n/a
3540 6/15 22:35 8 1 1 n/a n/a
3905 6/28 9:31 1 1 1 n/a n/a
4321 07/23 4:29 1024 1 1 n/a n/a
4363 07/24 17:02 256 1 1 n/a n/a
4747 8/10 20:31 2048 1 8 n/a n/a
4982 8/14 21:01 all L0 PNPP>2 ZTrig PNPP>0 CT
4982 8/14 21:01 2048 1 8 8 n/a
5441 08/26 14:40 16384 32 64 256 1
5483 08/28 17:35 16384 32 128 256 1
5516 08/30 16:15 16384 8 128 256 1
5578 9/2 6:24 all L0 PNPP>2 ZTrig PNPP>0 n/a CT
5578 9/2 6:24 16384 8 128 256 1 1

 

Changes

7/30/01 10:33, Run 7487.

The Live Time Scaler is added to the database instead of crossing clock. It is extracted in rocdbgateway using (eventBuilder->GetEMMScaler(3)<<16)+eventBuilder->GetEMMScaler(2)). This scaler measures time in microseconds when DAQ is enabled and not busy. Never cleared.

7/31/01 2:20, Run 7494s12

PnPp Narrow accepted connected to Scaler 11 (DB ch_01) from L1.CO.04