A spill of events from a FiberTracker station. More...

Public Member Functions
	FiberTrackerEvent (const std::vector< uint32_t > &spill_data, std::size_t i_word)

Public Attributes
int	trigger_timestamp_lsb

int	trigger_timestamp_msb

int	event_timestamp_lsb

int	event_timestamp_msb

std::vector< uint32_t >	channel_hits

Detailed Description

A spill of events from a FiberTracker station.

Each event is 10 32-bit words where

Word 0: Timestamp LSB in 8 ns ticks since the last whole second, for the trigger signal Word 1: Timestamp MSB in UNIX epoch seconds for the trigger signal (in international atomic time)

Word 2: Timestamp LSB in 8 ns ticks since the last whole second, for the "event" Word 3: Timestamp MSB in UNIX epoch seconds for the "event" (honestly don't know what they mean by "event", so I ignore this timestamp)

Word 4-9: Hit information, the fiber tracker has 6*32=192 fibers, a 1 means a hit and a 0 means no hit.

There are 192 bits to make the system compatible with the samll and big detectors. In T9 we have small detectors (only 96 channels) so we have lots of zeros. Only channels 48-144 have detector data, the other channels are empty (all zeros).

Definition at line 135 of file FiberTrackerRawDecoder.cxx.

Constructor & Destructor Documentation

◆ FiberTrackerEvent()

packing::FiberTrackerEvent::FiberTrackerEvent	(	const std::vector< uint32_t > &	spill_data,
		std::size_t	i_word
	)

inline

Definition at line 142 of file FiberTrackerRawDecoder.cxx.

                                      {
    trigger_timestamp_lsb = spill_data.at(i_word);
    trigger_timestamp_msb = spill_data.at(i_word + 1);
    event_timestamp_lsb = spill_data.at(i_word + 2);
    event_timestamp_msb = spill_data.at(i_word + 3);
    channel_hits.clear();
    channel_hits.reserve(6);
    for (std::size_t i{i_word + 4}; i < i_word + 10 and i < spill_data.size();
         i++)
      channel_hits.push_back(spill_data.at(i));
  }