Difference between revisions of "Production Run Plan R-HRS"
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(→Proton Elastic Kinematics) |
(→Proton Elastic Kinematics) |
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* The 15 cm dummy runs need to be taken at the elastic setting. So keep the momentum as is for this run. | * The 15 cm dummy runs need to be taken at the elastic setting. So keep the momentum as is for this run. | ||
* <b>A GMp expert will check the data quality.</b> | * <b>A GMp expert will check the data quality.</b> | ||
| + | |||
| + | * <b>5th Pass (E<SUB>beam</SUB> = 11.0 GeV)</b> Time estimate: 39 days @ 20 μA | ||
| + | <table border="1" style="width:80%"> | ||
| + | <tr> | ||
| + | <td>Target</td> | ||
| + | <td>Raster</td> | ||
| + | <td>E<SUB>beam</SUB> [GeV]</td> | ||
| + | <td>P<sub>0</sub> [GeV/c]</td> | ||
| + | <td>θ<SUB>e</SUB> [deg]</td> | ||
| + | <td>Q<SUP>2</SUP> [GeV<SUP>2</SUP>]</td> | ||
| + | <td> Electron Rate [Hz] at 20 μA</td> | ||
| + | <td><b>PAC days</b> at 20 μA</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>15 cm LH2</td> | ||
| + | <td>2 x 2 mm<sup>2</sup></td> | ||
| + | <td>11.021</td> | ||
| + | <td>2.204</td> | ||
| + | <td>48.74</td> | ||
| + | <td>16.54</td> | ||
| + | <td>0.003</td> | ||
| + | <td>38 (for 10k events)</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Optics</td> | ||
| + | <td>Off</td> | ||
| + | <td>11.021</td> | ||
| + | <td>0.85</td> | ||
| + | <td>48.74</td> | ||
| + | <td>6.38</td> | ||
| + | <td>4.4</td> | ||
| + | <td>1 hour (for 16k events) </td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>15 cm Dummy</td> | ||
| + | <td>2 x 2 mm<sup>2</sup></td> | ||
| + | <td>11.021</td> | ||
| + | <td>2.204</td> | ||
| + | <td>48.74</td> | ||
| + | <td>16.54</td> | ||
| + | <td>----</td> | ||
| + | <td>1 hour</td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | <br> | ||
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% <b>Alternative kinematics for pointing run</b>. | % <b>Alternative kinematics for pointing run</b>. | ||
# <b>Take Al dummy data only if time permits</b>. | # <b>Take Al dummy data only if time permits</b>. | ||
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Revision as of 16:25, 12 April 2016
Proton Elastic Kinematics
* If you need to increase the spectrometer momentum setting, make sure you cycle Q2 and Q3 as per the cycling procedure. * Elastic electron rates assume 20 μA on 15 cm LH2 target, 5 mSr acceptance. * Use the following prescale factors: ps1=1, ps2=1, ps3=1, ps8=100. All other triggers should have zero prescale factor. * For the optics pointing run, decrease the spectrometer momentum to 0.85 GeV/c. The right dipole will need about 1.5 hours to settle. * Take one hour on the optics target. * After the optics run is completed, then increase the spectrometer momentum back to the elastic setting.
Make sure to cycle the right Q2 and Q3 when increasing the momentum. * The 15 cm dummy runs need to be taken at the elastic setting. So keep the momentum as is for this run. * A GMp expert will check the data quality.
- 5th Pass (Ebeam = 11.0 GeV) Time estimate: 39 days @ 20 μA
| Target | Raster | Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | Electron Rate [Hz] at 20 μA | PAC days at 20 μA |
| 15 cm LH2 | 2 x 2 mm2 | 11.021 | 2.204 | 48.74 | 16.54 | 0.003 | 38 (for 10k events) |
| Optics | Off | 11.021 | 0.85 | 48.74 | 6.38 | 4.4 | 1 hour (for 16k events) |
| 15 cm Dummy | 2 x 2 mm2 | 11.021 | 2.204 | 48.74 | 16.54 | ---- | 1 hour |
- 4th Pass (Ebeam = 8.8 GeV) Time estimate: 22 days @ 20 μA
| Target | Raster | Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | Electron Rate [Hz] at 20 μA | PAC days at 20 μA |
| 15 cm LH2 | 2 x 2 mm2 | 8.841 | 2.101 | 48.74 | 12.65 | 0.018 | 21 (for 32k events) |
| Optics | Off | 8.841 | 0.85 | 48.74 | 5.12 | 4.9 | 1 hour (for 17k events) |
| 15 cm Dummy | 2 x 2 mm2 | 8.841 | 2.101 | 48.74 | 12.65 | ---- | 1 hour |
- 2nd Pass (Ebeam = 4.5 GeV) Time estimate: 7 hours @ 20 μA
| Target | Raster | Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | Electron Rate [Hz] at 20 μA | PAC hours at 20 μA |
| 15 cm LH2 | 2 x 2 mm2 | 4.481 | 1.706 | 48.75 | 5.21 | 2.4 | 4 (for 35k events) |
| 15 cm Dummy | 2 x 2 mm2 | 4.481 | 1.706 | 48.75 | 5.21 | 0.4 | 2.5 (for 3.6k events) |
- 2nd Pass (Ebeam = 4.5 GeV) Time estimate: 12 hours @ 20 μA
| Target | Raster | Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | Electron Rate [Hz] at 20 μA | PAC hours at 20 μA |
| 15 cm LH2 | 2 x 2 mm2 | 4.481 | 1.547 | 52.91 | 5.5 | 1.4 | 7 (for 35k events) |
| Optics | Off | 4.481 | 1.547 | 52.91 | 5.5 | 0.23 | 0.5 (for 400 events) |
| Optics% | Off | 4.481 | 0.85 | 52.91 | 3.0 | 4.2 at 10 μA | 0.5 (for 7.5k events) at 10 μA |
| 15 cm Dummy# | 2 x 2 mm2 | 4.481 | 1.547 | 52.91 | 5.5 | 0.26 | 4 (for 3.7k events) |
% Alternative kinematics for pointing run. # Take Al dummy data only if time permits.
