Difference between revisions of "Quad Tuning 1pass 48d"

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(New page: ==== Procedure without Sieve-slit ==== * <b>Kinematics need to be updated!</b> * Time estimate: 1-2 hours * Take a run at the following kinematics without the sieve-slit collimator. * S...)
 
(→‎Procedure without Sieve-slit)
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  * 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>&theta;<SUB>e</SUB> [deg]</td>
 +
    <td>Q<SUP>2</SUP> [GeV<SUP>2</SUP>]</td>
 +
    <td>W [GeV]</td>
 +
    <td> Rate [Hz] at 20 &mu;A</td>
 +
    <td> minutes for 71k events at 20 &mu;A</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%: 159.75 A</li>
 +
<li> -6%: 150.165 A</li>
 +
<li> -5%: 151.7625 A</li>
 +
<li> -4%: 153.36 A</li>
 +
<li> -3%: 154.9575 A</li>
 +
<li> +5%: 167.7375 A</li>
 +
</ol>
 +
 +
 +
* <b>Right-HRS Kinematics: 1st Pass (E<SUB>beam</SUB> = 2.2 GeV)</b> <br>
 
<table border="1"  style="width:80%">
 
<table border="1"  style="width:80%">
 
   <tr>
 
   <tr>

Revision as of 12:56, 8 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 right HRS spectrometer tune with the new quad in place of right Q1.
* 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 out of 11 carbon foils, 5 mSr acceptance, and 8% delta acceptance.
* A GMp expert will check the data quality and decide, if the right HRS tune needs 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:

  1. 0%: 159.75 A
  2. -6%: 150.165 A
  3. -5%: 151.7625 A
  4. -4%: 153.36 A
  5. -3%: 154.9575 A
  6. +5%: 167.7375 A


  • 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:

  1. 0%: 159.75 A
  2. -6%: 150.165 A
  3. -5%: 151.7625 A
  4. -4%: 153.36 A
  5. -3%: 154.9575 A
  6. +5%: 167.7375 A
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