Difference between revisions of "HRS Detector Calibrations"
From Hall A Wiki
| Line 17: | Line 17: | ||
<td>Optics</td> | <td>Optics</td> | ||
<td>2 mm x 2 mm</td> | <td>2 mm x 2 mm</td> | ||
| − | <td>5μA</td> | + | <td>5 μA</td> |
<td>S0&&S2m</td> | <td>S0&&S2m</td> | ||
</tr> | </tr> | ||
Revision as of 13:23, 4 February 2016
| Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Collimator | Target | Fast Raster X x Y |
Beam Current | Trigger |
| 4.481 | 0.75 | 48.0 | None | Optics | 2 mm x 2 mm | 5 μA | S0&&S2m |
- Check the timing and calibration constants (shower ADC gains, pedestals, timing offsets, pulse height corrections, attenuation lengths, efficiencies, position dependencies).
- VDCs and Straw Chambers
* Look at drift time spectra, is the shape reasonable? in the right time range?
* Fit for new time-to-distance map
* Look at focal plane distributions.
* Check fiducial tracking efficiency, is it > 95%, If not, then check TDC windows and tracking parameters.
- HRS Scintillators
* Look at all channels, compare against standard histograms.
* Are any channels firing at high rate (possible light leak)?
- Gas Cherenkov (Barak Schmookler)
* Look at histograms (Npe vs. x, and Npe vs. Shower), compare with standard distributions, ideally there shoudl be no x dependence.
- Electromagnetic calorimeters
* Make sure all ADC channels have signals.
* Calibrate with electrons. Maybe not be possible at this energy due to low rates.
- After these steps, the detectors should be fairly well calibrated.
