Difference between revisions of "Run Plan"

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== [https://hallaweb.jlab.org/wiki/index.php/Calibrations Calibration] ==
 
    
 
    
  
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* [[  Beam line check]]
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*     Tune beam to 1 pass, Set HRSL(-) and HRSR(-) at 15 (-15) deg.
 +
 
 
    
 
    
 +
1.  <span style="color:#ff0000"> HRSs calibration with C(e,e') (elastic) with/ without sieves. </span>
  
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* [[    HRSs checks]]
 
−
 
 
  
−
* [[     Momentum scane for BigBite commission, H(e,e'p) , H(e,p) and C(e,p) Kin A 1,2,3,6 (and Kin G2).]]
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*    Move HRS(R) to 12.5 deg change polarity to HRSR(+), Set BigBite at 68 Deg.
  
−
* [[    Energy change 1 pass to 2 pass.]]
 
 
    
 
    
 +
2.    <span style="color:#ff0000">Momentum scane for BigBite calibration, H(e,e'p) Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#H.28e.2Ce.27p.29_HRS.28L.29_and_BigBite A 1,2,3].</span>
  
−
* [[    Continue momentum scale for BigBite calibration, H(e,e'p), H(e,p) and C(e,p) Kin A 4,5 (and Kin C1,G1).]]
 
  
−
 
+
*      Energy change 1 pass to 2 pass.
  
−
* [[  BigBite angle change. (Rotate BB to an angle so that there will be no obsticle in the line of sight from target to the n-array).]]
 
−
 
 
  
−
* [[   n-array commision, Kin B1]]
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3.    <span style="color:#ff0000"> Continue calibration of BigBite H(e,e'p), D(e,e'p) and C(e,e'p) Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#H.28e.2Ce.27p.29_HRS.28L.29_and_BigBite A 4,5], [https://hallaweb.jlab.org/wiki/index.php/Kinematics#Full_acceptance_calibration_of_BigBite_C.28e.2Ce.27p.29_and_C.28e.2Cp.29 B 1,2,3,4] and [https://hallaweb.jlab.org/wiki/index.php/Kinematics#Full_acceptance_calibration_of_BigBite_d.28e.2Ce.27p.29 C1] </span>
−
 
+
 
 +
*      Move BigBite to backward angle (should allow HRSR at ~70 deg)
  
−
* [[    Change set-up to BB and N-Array both at 99 Deg + Energy change 2 pass to 4 pass.]]
 
 
    
 
    
 +
*      Put the Neutron array (without the lead wall) at 50 Deg and 15 meters from target.
  
−
* [[    Singles rates study.]]
 
−
 
 
  
−
* [[   D(e,e'pn) X<1, Kin D1]]
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4.   <span style="color:#ff0000"> Calibration of the HAND with H(e,e'p) Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#H.28e.2Ce.27p.29_HRS.28L.29_and_Neutron_Array_for_protons D1].</span>
  
−
==  [[End of commision]]  ==
 
−
 
 
  
−
* [[   D(e,e'pn) X>1, Kin E1]]
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5.   <span style="color:#ff0000"> Continue calibration of HRSs with quasi elastic scattering C(e,e'p) Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#Quasi_Elastic_C.28e.2Ce.27p.29 G 1,2].</span>
−
 
+
  
−
  * [[    SRC Run, low Momentum range, Kin F1 ]]
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 +
 
 +
*     Put the BigBite at 99 Deg (magnet on detector off) and HAND behind and install lead wall. Switch the polarity of HRSs to HRSL(+) and HRSR(-).
 +
 
 +
 
 +
6.  <span style="color:#ff0000"> Continue calibration of HRSs with quasi elastic scattering C(e,e'p) Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#Quasi_Elastic_C.28e.2Ce.27p.29_2 G 3,4]</span>
 +
 
 +
 
 +
 
 +
7.  <span style="color:#ff0000"> HAND neutron efficiency calibration.Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#d.28e.2Ce.27pn.29_x.3C1_HRS.28L.29.2C_HRS.28R.29_and_Neutron_Array E 1,2].</span>
 +
 
 +
==  End of Calibration  ==
 
    
 
    
 +
== [https://hallaweb.jlab.org/wiki/index.php/Production Production] ==
 +
 +
 +
*    Tune beam to 4 pass, switch HRSs polarity to HRSL(-) and HRSR(+).
 +
 +
 +
*    Singles rates study
 +
 +
 +
8.    <span style="color:#ff0000">D(e,e'pn), Establish triple coincidence at x>1 [https://hallaweb.jlab.org/wiki/index.php/Kinematics#D.28e.2Ce.27pn.29_Triple_coincidence_for_x.3E1 (Kin Pmiss = 500 MeV/c)] </span>
 +
 +
 +
*  Run for 2 calendar days, Q=1 C - expected ~100 events in the d(e,e'pn) TOF peak, (see [http://hallaweb.jlab.org/experiment/E01-015/ E01-015] previous measurement, for 4 cm LD2 target at 10 uA). Should be able to identify the [https://hallaweb.jlab.org/wiki/index.php/Rate_Estimation_for_LD2_pmiss%3D500_MeV/c_(based_on_e01-015) TOF n peak] at the known location ~ 40 events after a day of running: a check for x>1 timing etc.
 +
 +
 +
9.    <span style="color:#ff0000">4He(e,e'pp)/(e,e'pn), production, Pmiss = 500 MeV/c Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#H.28e.2Ce.27pp.29.2F.28e.2Ce.27pn.29_Triple_coincidence_for_x.3E1 K2] </span>
 +
 +
 +
10.    <span style="color:#ff0000">4He(e,e'pp)/(e,e'pn), production, Pmiss = 625 MeV/c Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#H.28e.2Ce.27pp.29.2F.28e.2Ce.27pn.29_Triple_coincidence_for_x.3E1 K3] </span>
 +
 +
 +
11.    <span style="color:#ff0000">4He(e,e'pp)/(e,e'pn), production, Pmiss = 755 MeV/c Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#H.28e.2Ce.27pp.29.2F.28e.2Ce.27pn.29_Triple_coincidence_for_x.3E1 K4] </span>
 +
 +
 +
12.    <span style="color:#ff0000">4He(e,e'pp)/(e,e'pn), production, Pmiss = 875 MeV/c Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#H.28e.2Ce.27pp.29.2F.28e.2Ce.27pn.29_Triple_coincidence_for_x.3E1 K5] </span>
 +
  
−
  * [[   SRC Run, High Momentum range, Kin F2
+
13.   <span style="color:#ff0000">4He(e,e'pp)/(e,e'pn), production, Pmiss = 400 MeV/c Kin [https://hallaweb.jlab.org/wiki/index.php/Kinematics#H.28e.2Ce.27pp.29.2F.28e.2Ce.27pn.29_Triple_coincidence_for_x.3E1 K1] </span>

Latest revision as of 11:04, 6 January 2011

Calibration

  • Tune beam to 1 pass, Set HRSL(-) and HRSR(-) at 15 (-15) deg.


1. HRSs calibration with C(e,e') (elastic) with/ without sieves.


  • Move HRS(R) to 12.5 deg change polarity to HRSR(+), Set BigBite at 68 Deg.


2. Momentum scane for BigBite calibration, H(e,e'p) Kin A 1,2,3.


  • Energy change 1 pass to 2 pass.


3. Continue calibration of BigBite H(e,e'p), D(e,e'p) and C(e,e'p) Kin A 4,5, B 1,2,3,4 and C1

  • Move BigBite to backward angle (should allow HRSR at ~70 deg)


  • Put the Neutron array (without the lead wall) at 50 Deg and 15 meters from target.


4. Calibration of the HAND with H(e,e'p) Kin D1.


5. Continue calibration of HRSs with quasi elastic scattering C(e,e'p) Kin G 1,2.


  • Put the BigBite at 99 Deg (magnet on detector off) and HAND behind and install lead wall. Switch the polarity of HRSs to HRSL(+) and HRSR(-).


6. Continue calibration of HRSs with quasi elastic scattering C(e,e'p) Kin G 3,4


7. HAND neutron efficiency calibration.Kin E 1,2.

End of Calibration

Production

  • Tune beam to 4 pass, switch HRSs polarity to HRSL(-) and HRSR(+).


  • Singles rates study


8. D(e,e'pn), Establish triple coincidence at x>1 (Kin Pmiss = 500 MeV/c)


  • Run for 2 calendar days, Q=1 C - expected ~100 events in the d(e,e'pn) TOF peak, (see E01-015 previous measurement, for 4 cm LD2 target at 10 uA). Should be able to identify the TOF n peak at the known location ~ 40 events after a day of running: a check for x>1 timing etc.


9. 4He(e,e'pp)/(e,e'pn), production, Pmiss = 500 MeV/c Kin K2


10. 4He(e,e'pp)/(e,e'pn), production, Pmiss = 625 MeV/c Kin K3


11. 4He(e,e'pp)/(e,e'pn), production, Pmiss = 755 MeV/c Kin K4


12. 4He(e,e'pp)/(e,e'pn), production, Pmiss = 875 MeV/c Kin K5


13. 4He(e,e'pp)/(e,e'pn), production, Pmiss = 400 MeV/c Kin K1

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