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AMS02 DAQ Framework

Analog signals from the Tracker are digitized and compressed in the Tracker Data Reduction boards (TDR). The next node in the DAQ system tree, the JINF, receives data from up to 24 TDRs. In the JINF data from the TDRs are collated, buffered and sent to the top level JINJ boards. Then JINJ collates, buffers and passes data to a JMDC, the Main DAQ Computer. The JMDC receives the complete event and monitor the detector performance. The events are then buffered and sent out the HRDL (High Rate Dynamic Link) when they becomes available.

Tracker electronics is constituded by 8 crates called T0, T1, T3, T2, T4, T7, T6, T5. Each crate contains 24 TDRs managed by 2 JINF (A and B). JINFs are doubled for redundancy (they are usually called brothers). All the 8 operating JINFs are read out by the JINJ. The JINJs are 4, but only one is strictly needed for the whole system DAQ. In the Tracker the redundancy are not complete:

  • JINJ-1 and 2 are connected with JINF-T-A
  • JINJ-0 and 3 are connected with JINF-T-B

Data are then collected by JMDC and sended to the HRDL. The actual implementation of the two HRDL lines is given by two computers. Here the actual configuration (may change):

  • HRDL-A --> means pcgsc00 used --> eas:hrdl pcgsc00 in the Lebedev style programs and in the slowconf.conf (SLOWGUI & AMSWire)
  • HRDL-B --> means pcgsc02 used --> eas:hrdl pcgsc02 in the Lebedev style programs and in the slowconf.conf (SLOWGUI & AMSWire)

The JINJ Slaves

Dec address 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23
Hex address 00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F 10 11 12 13 14 15 16 17
Crate T2 T3 U1 T0 S1A S1B S0A S0B U0 T1 R0 R1 E0 E1 JLA JLB T4 T5 S2A S2B S3A S3B T6 T7

The AMS Tracker Rosetta's Stele

          JINJ JMDC
Crate X Y Z OCT ADDR NUM A B P S  
T0 + WAKE + 1 0x033f 03 0xA6 0xA7 0xA8 0xA9  
T1 - WAKE + 2 0x093f 09 0xAA 0xAB 0xAC 0xAD  
T2 - RAM + 4 0x003f 00 0xAE 0xAF 0xB0 0xB1  
T3 + RAM + 3 0x013f 01 0xB2 0xB3 0xB4 0xB5  
T4 + WAKE - 5 0x103f 16 0xB6 0xB7 0xB8 0xB9  
T5 - WAKE - 6 0x113f 17 0xBA 0xBB 0xBC 0xBD  
T6 - RAM - 8 0x163f 22 0xBE 0xBF 0xC0 0xC1  
T7 + RAM - 7 0x173f 23 0xC2 0xC3 0xC4 0xC5  

Tables with HwId, TkId, Ladder Name, etc...

The TDR numeration conventions

Our 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23  
Hex 00 01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f 10 11 12 13 14 15 16 17  
Lebedev 00-A 00-B 01-A 01-B 02-A 02-B 03-A 03-B 04-A 04-B 05-A 05-B 06-A 06-B 07-A 07-B 08-A 08-B 09-A 09-B 10-A 10-B 11-A 11-B  
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Topic revision: r16 - 2010-08-18 - AlbertoOliva
 
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