Difference between revisions of "Quad Tuning 1pass 48d"
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* <b>A GMp expert will check the data quality and decide, if the HRS tunes need to be adjusted to change the size of the acceptance.</b> | * <b>A GMp expert will check the data quality and decide, if the HRS tunes need to be adjusted to change the size of the acceptance.</b> | ||
* This process will be repeated until the spectrometer tune is satisfactory.<br> | * This process will be repeated until the spectrometer tune is satisfactory.<br> | ||
| + | |||
| + | * <b>Right-HRS Kinematics: 1st Pass (E<SUB>beam</SUB> = 2.2 GeV)</b> <br> | ||
| + | <table border="1" style="width:80%"> | ||
| + | <tr> | ||
| + | <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>W [GeV]</td> | ||
| + | <td> Rate [Hz] at 20 μA</td> | ||
| + | <td> minutes for 71k events at 20 μA</td> | ||
| + | </tr> | ||
| + | <tr> | ||
| + | <td>2.217</td> | ||
| + | <td>0.85</td> | ||
| + | <td>48.75</td> | ||
| + | <td>1.28</td> | ||
| + | <td>1.47</td> | ||
| + | <td>119</td> | ||
| + | <td>10</td> | ||
| + | </tr> | ||
| + | </table> | ||
| + | |||
| + | We want to take runs with the following Q1 currents: | ||
| + | <ol> | ||
| + | <li> 0%: 173.825 A</li> | ||
| + | <li> -10%: 156.443 A</li> | ||
| + | <li> -5%: 165.134 A</li> | ||
| + | <li> -2%: 170.349 A</li> | ||
| + | <li> +2%: 177.302 A</li> | ||
| + | <li> +5%: 182.516 A</li> | ||
| + | <li> +10%: 191.208 A</li> | ||
| + | </ol> | ||
* <b>Left-HRS Kinematics: 1st Pass (E<SUB>beam</SUB> = 2.2 GeV)</b> <br> | * <b>Left-HRS Kinematics: 1st Pass (E<SUB>beam</SUB> = 2.2 GeV)</b> <br> | ||
Revision as of 11:48, 14 October 2016
Procedure without Sieve-slit
- Kinematics need to be updated!
- Time estimate: 1-2 hours
* Take a run at the following kinematics without the sieve-slit collimator. * Start with initial HRS spectrometer tunes for the left and right arms with the new quads in place of Q1s. * If you need to increase the spectrometer momentum setting, make sure you cycle Q2 and Q3 as per the cycling procedure. * Electron rates assume 9 carbon foils, 5 mSr acceptance, and 8% delta acceptance. * A GMp expert will check the data quality and decide, if the HRS tunes need to be adjusted to change the size of the acceptance. * This process will be repeated until the spectrometer tune is satisfactory.
- Right-HRS Kinematics: 1st Pass (Ebeam = 2.2 GeV)
| Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | W [GeV] | Rate [Hz] at 20 μA | minutes for 71k events at 20 μA |
| 2.217 | 0.85 | 48.75 | 1.28 | 1.47 | 119 | 10 |
We want to take runs with the following Q1 currents:
- 0%: 173.825 A
- -10%: 156.443 A
- -5%: 165.134 A
- -2%: 170.349 A
- +2%: 177.302 A
- +5%: 182.516 A
- +10%: 191.208 A
- Left-HRS Kinematics: 1st Pass (Ebeam = 2.2 GeV)
| Ebeam [GeV] | P0 [GeV/c] | θe [deg] | Q2 [GeV2] | W [GeV] | Rate [Hz] at 20 μA | minutes for 2M events at 20 μA |
| 2.217 | 1.0 | 17.5 | 0.20 | 1.72 | 9800 (3260 Hz with ps = 3) | 10 |
We want to take runs with the following Q1 currents:
- 0%: 204.5 A
- -10%: 184.05 A
- -5%: 194.275 A
- -2%: 200.41 A
- +2%: 208.59 A
- +5%: 214.725 A
- +10%: 224.95 A
Right HRS Quad Tuning Plan (Only if right HRS magnets are working)
