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static constexpr float | NaN = std::numeric_limits<float>::signaling_NaN() |
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Quantities used to characterize the spill-by-spill beam quality.
These variables store measurements from multiple devices placed along the beam line.
- POT (Protons on Target): Measured by the toroids E:TRTGDT, E:TOR101, and E:TR101D.
The POT value is given per pulse and includes a normalization factor of 1e12 so that users do not need to apply any additional scaling.
- Horn Current: Determined as a linear combination of four strip-line measurements (NSLINA, NSLINB, NSLINC, and NSLIND).
The calculation follows the method described in
https://cdcvs.fnal.gov/redmine/projects/novaart/repository/svn/entry/trunk/IFDBSpillInfo/IFDBSpillInfo_module.cc#L685.
- Beam Position (Pre-target): Measured by the monitors “121” and “TGT”, which provide the horizontal and vertical position of the beam, as well as its intensity, in the pre-target region for each of the six batches.
- Beam Position (On target): Computed as an intensity-weighted average of the measurements from the 121 and TGT monitors.
- Beam Width (TGT location): the MTGTDS device contains the readout voltages of horizontal and vertical wires (206 values, 48 horizontal + 48 vertical + additional values). The horizontal and vertical spread of the beam is obtained from a gaussian fit of the voltages as function of the wire postion
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bool | ismc |
| | data or simulated beam pulse?
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bool | isgoodpulse = true |
| | Was the pot for a pulse good? (only applicable to data)
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unsigned long int | pulsetimesec = 0 |
| | pulse time in seconds [s]
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unsigned long int | pulsetimensec = 0 |
| | pulse time in nanoseconds [ns]
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unsigned long int | gpspulsetimesec = 0 |
| | pulse time from GPS [s]
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unsigned long int | gpspulsetimensec = 0 |
| | pulse time from GPS [ns]
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signed long long int | deltapulsetimensec = -9999999 |
| | Delta time [ns].
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float | pulsepot = NaN |
| | POT as measured by the toroid E:TRTGDT device.
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float | potTOR101 = NaN |
| | POT as measured by the toroid E:TOR101 device.
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float | potTR101D = NaN |
| | POT as measured by the toroid E:TR101D device.
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float | hornI = NaN |
| | Horn current [kA].
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float | hornDir = NaN |
| | Horn polarity [V].
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float | beamHwidth = NaN |
| | Beam horizontal width [mm].
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float | beamVwidth = NaN |
| | Beam vertical width [mm].
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std::vector< double > | horizontalposTGT |
| | horizontal beam position as measured by E:HPTGT device (7 values = 6 batches + 1 mean value) [mm]
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std::vector< double > | horizontalintTGT |
| | horizontal beam intensity as measured by E:HITGT device (7 values = 6 batches + 1 mean value) []
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std::vector< double > | horizontalpos121 |
| | horizontal beam position as measured by E:HP121 device (7 values = 6 batches + 1 mean value) [mm]
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std::vector< double > | verticalposTGT |
| | vertical beam position as measured by E:VPTGT device (7 values = 6 batches + 1 mean value) []
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std::vector< double > | verticalintTGT |
| | vertical beam intensity as measured by E:VITGT device (7 values = 6 batches + 1 mean value) [mm]
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std::vector< double > | verticalpos121 |
| | vertical beam position as measured by E:VP121 device (7 values = 6 batches + 1 mean value) [mm]
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std::vector< double > | multiwireInfo |
| | horizontal and vertical readout voltages measured by E:MTGTDS device (216 values) [a.u.]
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bool | isFHC () const |
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bool | is0HC () const |
| | Checks hornI to see if the polarity is positive --> this is FHC.
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| bool | isRHC () const |
| | Checks hornI to see if the polarity is zero.
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◆ isRHC()
| bool caf::SRBeamBranch::isRHC |
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Checks hornI to see if the polarity is zero.
Checks hornI to see if the polarity is negative --> this is RHC
The documentation for this class was generated from the following file:
