Difference between revisions of "Parasitic Production Run Plan R-HRS 48.75 degrees"
From Hall A Wiki
(→Proton Elastic Kinematics) |
(→Proton Elastic Kinematics) |
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<td>0.018</td> | <td>0.018</td> | ||
<td>19 (for 29k events)</td> | <td>19 (for 29k events)</td> | ||
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</tr> | </tr> | ||
<tr> | <tr> | ||
| Line 50: | Line 40: | ||
<td>1.815</td> | <td>1.815</td> | ||
<td>53.25</td> | <td>53.25</td> | ||
| − | <td>12. | + | <td>12.54</td> |
<td>----</td> | <td>----</td> | ||
<td>1 hour</td> | <td>1 hour</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Single Carbon</td> | ||
| + | <td>Off</td> | ||
| + | <td>8.517</td> | ||
| + | <td>0.85</td> | ||
| + | <td>53.25</td> | ||
| + | <td>4.93</td> | ||
| + | <td>6.9</td> | ||
| + | <td>1 hour (for 24k events)</td> | ||
</tr> | </tr> | ||
</table> | </table> | ||
| Line 73: | Line 73: | ||
<td>2 x 2 mm<sup>2</sup></td> | <td>2 x 2 mm<sup>2</sup></td> | ||
<td>10.617</td> | <td>10.617</td> | ||
| − | <td> | + | <td>1.896</td> |
| − | <td> | + | <td>53.25</td> |
| − | <td> | + | <td>16.33</td> |
<td>0.003</td> | <td>0.003</td> | ||
<td>22 (for 5.7k events)</td> | <td>22 (for 5.7k events)</td> | ||
</tr> | </tr> | ||
<tr> | <tr> | ||
| − | <td> | + | <td>15 cm Dummy</td> |
| + | <td>2 x 2 mm<sup>2</sup></td> | ||
| + | <td>10.617</td> | ||
| + | <td>1.896</td> | ||
| + | <td>53.25</td> | ||
| + | <td>16.33</td> | ||
| + | <td>----</td> | ||
| + | <td>1 hour</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>Single Carbon</td> | ||
<td>Off</td> | <td>Off</td> | ||
<td>10.617</td> | <td>10.617</td> | ||
<td>0.85</td> | <td>0.85</td> | ||
| − | <td> | + | <td>53.25</td> |
<td>6.15</td> | <td>6.15</td> | ||
<td>6.0</td> | <td>6.0</td> | ||
<td>1 hour (for 21k events) </td> | <td>1 hour (for 21k events) </td> | ||
| − | |||
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</tr> | </tr> | ||
</table> | </table> | ||
<br> | <br> | ||
Revision as of 16:06, 29 October 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 15 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.
- 4th Pass (Ebeam = 8.5 GeV) Time estimate: 19 days @ 15 μA
| Target | Raster | Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | Electron Rate [Hz] at 15 μA | PAC days at 15 μA |
| 15 cm LH2 | 2 x 2 mm2 | 8.517 | 1.815 | 53.25 | 12.54 | 0.018 | 19 (for 29k events) |
| 15 cm Dummy | 2 x 2 mm2 | 8.517 | 1.815 | 53.25 | 12.54 | ---- | 1 hour |
| Single Carbon | Off | 8.517 | 0.85 | 53.25 | 4.93 | 6.9 | 1 hour (for 24k events) |
- 5th Pass (Ebeam = 10.6 GeV) Time estimate: 22 days @ 15 μA
| Target | Raster | Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | Electron Rate [Hz] at 15 μA | PAC days at 15 μA |
| 15 cm LH2 | 2 x 2 mm2 | 10.617 | 1.896 | 53.25 | 16.33 | 0.003 | 22 (for 5.7k events) |
| 15 cm Dummy | 2 x 2 mm2 | 10.617 | 1.896 | 53.25 | 16.33 | ---- | 1 hour |
| Single Carbon | Off | 10.617 | 0.85 | 53.25 | 6.15 | 6.0 | 1 hour (for 21k events) |
