Difference between revisions of "Production Run Plan R-HRS"

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(→‎Proton Elastic Kinematics)
(→‎Proton Elastic Kinematics)
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     <td>----</td>
 
     <td>----</td>
 
     <td></td>
 
     <td></td>
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  </tr>
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</table>
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<br>
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* <b>2nd Pass (E<SUB>beam</SUB> = 4.5 GeV)</b> Time estimate: 12 hours<br>
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<table border="1"  style="width:80%">
 +
  <tr>
 +
    <td>Target</td>
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    <td>Raster</td>
 +
    <td>E<SUB>beam</SUB> [GeV]</td>
 +
    <td>P<sub>0</sub> [GeV/c]</td>
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    <td>&theta;<SUB>e</SUB> [deg]</td>
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    <td>Q<SUP>2</SUP> [GeV<SUP>2</SUP>]</td>
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    <td> Electron Rate [Hz] at 20 &mu;A</td>
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    <td> hours at 20 &mu;A</td>
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  </tr>
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  <tr>
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    <td>15 cm LH2</td>
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    <td>2 x 2  mm<sup>2</sup></td>
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    <td>4.481</td>
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    <td>1.706</td>
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    <td>48.75</td>
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    <td>5.2</td>
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    <td>2.4</td>
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    <td>4 (for 35k events)</td>
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  </tr>
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  <tr>
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    <td>15 cm Dummy</td>
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  <td>2 x 2  mm<sup>2</sup></td>
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    <td>4.481</td>
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    <td>1.706</td>
 +
    <td>48.75</td>
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    <td>5.2</td>
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    <td>0.4</td>
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    <td>2.5 (for 3.6k events)</td>
 
   </tr>
 
   </tr>
 
</table>
 
</table>
 
<br>
 
<br>

Revision as of 19:03, 15 February 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. 
* A GMp expert will check the data quality.
  • 2nd Pass (Ebeam = 4.5 GeV) Time estimate: 12 hours
Target Raster Ebeam [GeV] P0 [GeV/c] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 20 μA 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)
15 cm Dummy 2 x 2 mm2 4.481 1.547 52.91 5.5 0.26 4 (for 3.7k events)


  • 4th Pass (Ebeam = 8.8 GeV) Time estimate: 22 days
Target Raster Ebeam [GeV] P0 [GeV/c] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 20 μA 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)
15 cm Dummy 2 x 2 mm2 8.841 2.101 48.74 12.65 ----


  • 5th Pass (Ebeam = 11.0 GeV) Time estimate: 39 days
Target Raster Ebeam [GeV] P0 [GeV/c] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 20 μA 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)
15 cm Dummy 2 x 2 mm2 11.021 2.204 48.74 16.54 ----


  • 2nd Pass (Ebeam = 4.5 GeV) Time estimate: 12 hours
Target Raster Ebeam [GeV] P0 [GeV/c] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 20 μA hours at 20 μA
15 cm LH2 2 x 2 mm2 4.481 1.706 48.75 5.2 2.4 4 (for 35k events)
15 cm Dummy 2 x 2 mm2 4.481 1.706 48.75 5.2 0.4 2.5 (for 3.6k events)


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