Difference between revisions of "Parasitic Production Run Plan R-HRS 48.75 degrees"

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(Proton Elastic Kinematics)
(Proton Elastic Kinematics)
 
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Line 19: Line 19:
 
     <td>E<SUB>beam</SUB> [GeV]</td>
 
     <td>E<SUB>beam</SUB> [GeV]</td>
 
     <td>P<sub>0</sub> [GeV/c]</td>
 
     <td>P<sub>0</sub> [GeV/c]</td>
 +
    <td>Q1 Current [Amps]</td>
 
     <td>&theta;<SUB>e</SUB> [deg]</td>
 
     <td>&theta;<SUB>e</SUB> [deg]</td>
 
     <td>Q<SUP>2</SUP> [GeV<SUP>2</SUP>]</td>
 
     <td>Q<SUP>2</SUP> [GeV<SUP>2</SUP>]</td>
Line 29: Line 30:
 
     <td>8.517</td>
 
     <td>8.517</td>
 
     <td>1.804</td>
 
     <td>1.804</td>
 +
    <td>361.54</td>
 
     <td>53.47</td>
 
     <td>53.47</td>
 
     <td>12.56</td>
 
     <td>12.56</td>
 
     <td>0.011</td>
 
     <td>0.011</td>
     <td>19 (for 17.4k events)</td>
+
     <td>19 (for 17k events)</td>
 
   </tr>
 
   </tr>
 
   <tr>
 
   <tr>
Line 39: Line 41:
 
     <td>8.517</td>
 
     <td>8.517</td>
 
     <td>1.804</td>
 
     <td>1.804</td>
 +
    <td> 361.54 </td>
 
     <td>53.47</td>
 
     <td>53.47</td>
 
     <td>12.56</td>
 
     <td>12.56</td>
Line 49: Line 52:
 
     <td>8.517</td>
 
     <td>8.517</td>
 
     <td>0.85</td>
 
     <td>0.85</td>
 +
    <td>170.35</td>
 
     <td>53.47</td>
 
     <td>53.47</td>
     <td>5.81</td>
+
     <td>5.86</td>
 
     <td>0.83</td>
 
     <td>0.83</td>
 
     <td>1 hour (for 3k events)</td>
 
     <td>1 hour (for 3k events)</td>
Line 64: Line 68:
 
     <td>E<SUB>beam</SUB> [GeV]</td>
 
     <td>E<SUB>beam</SUB> [GeV]</td>
 
     <td>P<sub>0</sub> [GeV/c]</td>
 
     <td>P<sub>0</sub> [GeV/c]</td>
 +
    <td> Q1 current [Amps]</td>
 
     <td>&theta;<SUB>e</SUB> [deg]</td>
 
     <td>&theta;<SUB>e</SUB> [deg]</td>
 
     <td>Q<SUP>2</SUP> [GeV<SUP>2</SUP>]</td>
 
     <td>Q<SUP>2</SUP> [GeV<SUP>2</SUP>]</td>
Line 73: Line 78:
 
     <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>1.896</td>
+
     <td>2.165</td>
     <td>53.25</td>
+
     <td>433.89</td>
     <td>16.33</td>
+
     <td>48.75</td>
     <td>0.002</td>
+
    <td>15.82</td>
     <td>22 (for 3.6k events)</td>
+
     <td>0.003</td>
 +
     <td>22 (for 5.7k events)</td>
 
   </tr>
 
   </tr>
 
   <tr>
 
   <tr>
Line 83: Line 89:
 
     <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>1.896</td>
+
     <td>2.165</td>
     <td>53.25</td>
+
     <td>433.89</td>
     <td>16.33</td>
+
     <td>48.75</td>
 +
    <td>15.82</td>
 
     <td>----</td>
 
     <td>----</td>
 
     <td>1 hour</td>
 
     <td>1 hour</td>
 
   </tr>
 
   </tr>
 
   <tr>
 
   <tr>
     <td>Single Carbon</td>
+
     <td>Optics</td>
 
     <td>Off</td>
 
     <td>Off</td>
 
     <td>10.617</td>
 
     <td>10.617</td>
 
     <td>0.85</td>
 
     <td>0.85</td>
     <td>53.25</td>
+
     <td>170.35</td>
     <td>7.24</td>
+
     <td>48.75</td>
     <td>0.69</td>
+
     <td>6.15</td>
     <td>1 hour (for 2.5k events) </td>
+
     <td>3.0</td>
 +
    <td>0.5 hour (for 5.4k events) </td>
 
   </tr>
 
   </tr>
 
</table>
 
</table>
 
<br>
 
<br>

Latest revision as of 10:50, 8 November 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] Q1 Current [Amps] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 15 μA PAC days at 15 μA
15 cm LH2 2 x 2 mm2 8.517 1.804 361.54 53.47 12.56 0.011 19 (for 17k events)
15 cm Dummy 2 x 2 mm2 8.517 1.804 361.54 53.47 12.56 ---- 1 hour
Single Carbon Off 8.517 0.85 170.35 53.47 5.86 0.83 1 hour (for 3k events)


  • 5th Pass (Ebeam = 10.6 GeV) Time estimate: 22 days @ 15 μA
Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [Amps] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 15 μA PAC days at 15 μA
15 cm LH2 2 x 2 mm2 10.617 2.165 433.89 48.75 15.82 0.003 22 (for 5.7k events)
15 cm Dummy 2 x 2 mm2 10.617 2.165 433.89 48.75 15.82 ---- 1 hour
Optics Off 10.617 0.85 170.35 48.75 6.15 3.0 0.5 hour (for 5.4k events)