Difference: Infos (16 vs. 17)

Revision 172010-08-18 - AlbertoOliva

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META TOPICPARENT name="AmsTracker"

AMS02 DAQ Framework

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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.
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Analog signals from the Tracker are digitized and compressed in the Tracker Data Reduction boards (TDR). The next node in the data acquisition (DAQ) tree system, the JINF, receives data from up to 24 TDRs. In the JINF, the data from the TDRs are collated, buffered and sent to the top level JINJ boards. Then JINJ collates, buffers and passes data to the JMDC, the main DAQ Computer. The JMDC receives the complete event and monitors the detector performance. The events are then buffered and sent out the HRDL (High Rate Dynamic Link) when they become available.
 
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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:
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Tracker electronics is constituted 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. There are 4 JINJs, but only one is strictly needed for the whole DAQ system. In the Tracker, however, the redundancy is not complete:
 
  • JINJ-1 and 2 are connected with JINF-T-A
  • JINJ-0 and 3 are connected with JINF-T-B
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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):
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The data are then collected by JMDC and sent to the HRDL. The actual implementation of the two HRDL lines is given by two computers. Here the actual configuration (which may change) is:
 
  • 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)
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The JINJ Slaves

 
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