Tracker in DATE¶

A description of the tracker DAQ in Date.

Equipment which date uses:

• VLSB
• VLSBBank
• VLSBMaster
• VLSBTriggerHandler

Date Functions¶

Arm¶

ArmVLSB:¶

• Creates a "MDEVLSB" object and sets up with VME Base addresses.
• Calls MDEVLSB Arm() Function.
  • Initilises TrVLSBController. No bus ops are done. Just some memory initialisation. This seems to have all VLSB addresses inside.

ArmVLSBBank:¶

• Creates "MDEVLSBank" equipments and sets up with VME Base Addresses.
• Calls MDEVLSBank Arm() Function.
  • Initilises TrVLSBController. No bus ops are done. Just some memory initialisation. This seems to have all VLSB addresses inside.

ArmVLSBMaster:¶

• Sets parameters inside MDEVLSBMaster. Note a pointer to MDEVLSBMaster is written to a global variable.
• Calls MDEVLSBMaster Arm() Function.
  • Sets a memory address for TrVLSBMasterController

ArmVLSBTriggerHandler¶

• Sets parameters inside MDEVLSBMaster. Note an extern pointer to MDEVLSBMaster is used as a global.
• Calls MDEVLSBMaster Arm() Function.
  • Sets a memory address for TrVLSBMasterController

ReadEvent (Start of Burst)¶

VLSBReadEvent (Start of Burst) - Do Nothing

VLSBBankReadEvent (Start of Burst) - Do Nothing

VLSBMasterReadEvent (Start of Burst) - Do Nothing

VLSBTriggerHandlerReadEvent (Start of Burst)¶

• Calls MDEVLSBMaster ReadEventVLSBMasterTrailer()
  • Calls TrVLSBMasterController enableTrigger():
    

    modeRegisterValue = 0xF4; // External trigger
    int result = CAENVME_WriteCycle(0, baseAddress + addresses["control"], &modeRegisterValue, addressModifier, dataWidth);
    

ReadEvent (PhysicsEvent)¶

VLSBReadEvent (PhysicsEvent)¶

• Calls MDEVLSB.ReadEvent("READOUT"):
  • Calls TrController.setReadoutMode()
    

    CAENVME_WriteCycle(0, baseAddress + addresses["lvdsControl"], &lvdsSetting["disableLVDS"], addressModifier, dataWidth)

VLSBBankReadEvent (PhysicsEvent)¶

• Calls MDEVLSBBank.setDataPtr(data_ptr_32)
• Calls MDEVLSBBank.ReadEvent()
  • Calls TrVLSBController.readBank(parameters["BankNumber"],0,mde_dataPtr_)
    CAENVME_MultiRead does the work here.

VLSBMasterReadEvent (PhysicsEvent)¶

• Calls MDEVLSBMaster.ReadEventVLSBMaster()
  • Calls TrVLSBMasterController.disableTrigger();
    

    CAENVME_WriteCycle(0, baseAddress + addresses["control"], &triggerSetting["spillDisable"], addressModifier, dataWidth)

VLSBTriggerHandlerReadEvent (PhysicsEvent) - Does Nothing

ReadEvent (End of Burst)¶

VLSBReadEvent (End of Burst)¶

• Calls MDEVLSB.ReadEvent("ACQUIRE")
  • TrVLSBController.setDataMode()
    

    en = 0x40;
    CAENVME_WriteCycle(0, baseAddress + addresses["control"], &en, addressModifier, dataWidth);
    CAENVME_WriteCycle(0, baseAddress + addresses["lvdsControl"], &lvdsSetting["enableLVDS"], addressModifier, dataWidth);

VLSBBankReadEvent (End of Burst) - Do Nothing

VLSBMasterReadEvent (End of Burst) - Do Nothing

VLSBTriggerHandlerReadEvent (End of Burst) - Do Nothing