Difference between revisions of "GMp Production Run Plan, Dedicated Time L-HRS and R-HRS"

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(Proton Elastic Kinematics)
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  * If you need to increase the spectrometer momentum setting, make sure you cycle Q2 and Q3 as per the cycling procedure.
 
  * 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 60 μA on 15 cm LH2 target, 5 mSr acceptance.
 
  * Elastic electron rates assume 60 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.
+
  * Use the following prescale factors: <br>
 +
  ps1=1, ps2=1, ps3=1, ps8=100 for the Right HRS.  
 +
  ps1=1, ps2=1, ps3=1, ps7=1, ps8=10000
 +
  All other triggers should have zero prescale factor.
 
  * For the carbon pointing run, decrease the spectrometer momentum for the left and right spectrometers to 1.0 GeV/c.  <br>
 
  * For the carbon pointing run, decrease the spectrometer momentum for the left and right spectrometers to 1.0 GeV/c.  <br>
 
   The right dipole will need about 2-3 hours to settle.
 
   The right dipole will need about 2-3 hours to settle.

Revision as of 17:39, 20 October 2016

Proton Elastic Kinematics

During each pass change, we require a spectrometer pointing survey for the Left HRS and sometimes for the Right HRS.

* 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 60 μA on 15 cm LH2 target, 5 mSr acceptance.
* Use the following prescale factors: 
ps1=1, ps2=1, ps3=1, ps8=100 for the Right HRS. ps1=1, ps2=1, ps3=1, ps7=1, ps8=10000 All other triggers should have zero prescale factor. * For the carbon pointing run, decrease the spectrometer momentum for the left and right spectrometers to 1.0 GeV/c.
The right dipole will need about 2-3 hours to settle. * Take a one hour run on the optics target. * After the carbon run is completed, then increase the spectrometer momentum back to the elastic setting.
Again, the right dipole will need about 2-3 hours to settle
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. * We should take dummy target data to accumulate at least 10% of the LH2 statistics. * A GMp expert will check the data quality.


  • Left-HRS Kinematics: 4th Pass (Ebeam = 8.5 GeV)
    Time estimate: 8 days @ 60 μA
Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC days at 60 μA Real Time at 60 μA
K4-11 15 cm LH2 2 x 2 mm2 8.517 2.531 527.94 42.0 11.18 0.18 2.6 (for 40k events) N/A
K4-11 15 cm Dummy 2 x 2 mm2 8.517 2.531 527.94 42.0 11.18 ---- (@ 40 μA) N/A at least 1 hour
K4-11 Single Carbon Off 8.517 1.0 208.59 42.0 4.38 12.4 N/A 1 hour (for 44k events)


Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC days at 60 μA Real Time at 60 μA
K4-10 15 cm LH2 2 x 2 mm2 8.517 3.259 679.79 34.4 9.81 0.71 0.7 (for 40k events) N/A
K4-10 15 cm Dummy 2 x 2 mm2 8.517 3.259 679.79 34.4 9.81 0.26 (@ 40 μA) N/A at least 1 hour
K4-10 Single Carbon Off 8.517 1.0 208.59 34.4 2.98 34 N/A 0.5 hour (for 61k events)


Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC days at 60 μA Real Time at 60 μA
K4-9 15 cm LH2 2 x 2 mm2 8.517 3.685 768.65 30.9 9.0 1.6 0.3 (for 40k events) N/A
K4-9 15 cm Dummy 2 x 2 mm2 8.517 3.685 768.65 30.9 9.0 0.54 (@ 40 μA) N/A at least 1 hour
K4-9 Single Carbon Off 8.517 1.0 208.59 30.9 2.42 53 N/A 0.5 hour (for 95k events)


  • Right-HRS Kinematics: 4th Pass (Ebeam = 8.5 GeV)
    Time estimate: 8 days @ 60 μA
Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC days at 60 μA Real Time at 60 μA
K4-12 15 cm LH2 2 x 2 mm2 8.517 2.060 412.84 48.75 12.1 0.071 3.5 (for 21k events) N/A
K4-12 15 cm Dummy 2 x 2 mm2 8.517 2.060 412.84 48.75 12.1 ---- (@ 40 μA) N/A at least 1 hour
K4-12 Single Carbon Off 8.517 1.0 200.41 48.75 5.80 4.5 N/A 1 hour (for 16k events)


  • Left-HRS Kinematics: 3rd Pass (Ebeam = 6.4 GeV)
    Time estimate: 3 days @ 60 μA
Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC hours at 60 μA Real Time at 60 μA
K3-6 15 cm LH2 2 x 2 mm2 6.417 3.224 672.49 30.9 5.93 14 1 (for 50k events) N/A
K3-6 15 cm Dummy 2 x 2 mm2 6.417 3.224 672.49 30.9 5.93 2.5 (@ 40 μA) N/A at least 1 hour
K3-6 Single Carbon Off 6.417 1.0 208.59 30.9 1.82 79 N/A 0.33 hour (for 90k events)


Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC hours at 60 μA Real Time at 60 μA
K3-4 15 cm LH2 2 x 2 mm2 6.417 3.962 826.43 24.25 4.5 101 0.17 (for 60k events) N/A
K3-4 15 cm Dummy 2 x 2 mm2 6.417 3.962 826.43 24.25 4.5 16.3 (@ 40 μA) N/A at least 1 hour
K3-4 Single Carbon Off 6.417 1.0 208.59 24.25 1.13 190 N/A 0.25 hour (for 170k events)


Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC hours at 60 μA Real Time at 60 μA
K3-7 15 cm LH2 2 x 2 mm2 6.417 3.672 765.94 37.0 7.0 3.7 3.0 (for 40k events) N/A
K3-7 15 cm Dummy 2 x 2 mm2 6.417 3.672 765.94 37.0 7.0 0.6 (@ 40 μA) N/A at least 1 hour
K3-7 Single Carbon Off 6.417 1.0 208.59 37.0 2.58 35 N/A 0.5 hour (for 60k events)


Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC hours at 60 μA Real Time at 60 μA
K3-8 15 cm LH2 2 x 2 mm2 6.417 2.304 480.59 42.0 7.67 1.5 8 (for 40k events) N/A
K3-8 15 cm Dummy 2 x 2 mm2 6.417 2.304 480.59 42.0 7.67 0.3 (@ 40 μA) N/A at least 1 hour
K3-8 Single Carbon Off 6.417 1.0 208.59 42.0 3.30 18 N/A 0.5 hour (for 32k events)


  • Right-HRS Kinematics: 3rd Pass (Ebeam = 6.4 GeV)
    Time estimate: 3 days @ 60 μA
Kinematic Target Raster Ebeam [GeV] P0 [GeV/c] Q1 current [A] θe [deg] Q2 [GeV2] Electron Rate [Hz] at 60 μA PAC days at 60 μA Real Time at 60 μA
K3-9 15 cm LH2 2 x 2 mm2 6.417 1.602 321.06 55.5 9.0 0.27 31 (for 30k events) N/A
K3-9 15 cm Dummy 2 x 2 mm2 6.417 1.602 321.06 55.5 9.0 0.05 (@ 40 μA) N/A at least 1 hour
K3-9 Single Carbon Off 6.417 1.0 200.41 55.5 5.56 2.3 N/A 1 hour (for 8k events)