Difference between revisions of "Kinematics"

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(→‎HRS Calibration)
(→‎HRS Calibration)
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=== Quasi Elastic C(e,e'p) ===
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* This calibration should be done '''AFTER''' the change to 2 pass
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{| border="1" cellpadding="2"
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|-
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! Kin
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! Ein [MeV]
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! colspan="2" | HRS(L) Electrons
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! colspan="2" | HRS(R) Protons
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! colspan="2" | BigBite
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  (not in use)
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! colspan="2" | Neutron Arm
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  (not in use)
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! Target
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! Plots
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! MCEEP
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| P(e')
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| Theta (e')
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| Carbon
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Revision as of 05:34, 1 April 2010

Kinematics

HRS Calibration

HRS(L) and HRS (R) C(e,e')

Kin Ein [MeV] HRS(L) Electrons HRS(R) Electrons BigBite 
 (not in use)
Neutron Arm 
 (not in use)
Target Plots MCEEP
H# P(e') Theta (e') P(e') Theta (e') P Theta P Theta
1 1162 1204.2 15 1204.2 -15 Carbon Kin Map
2 1162 1181.1 15 1181.1 -15 Carbon Kin Map
3 1162 1157.9 15 1157.9 -15 Carbon Kin Map
4 1162 1134.7 15 1134.7 -15 Carbon Kin Map
5 1162 1111.6 15 1111.6 -15 Carbon Kin Map -

Quasi Elastic C(e,e'p)

  • This calibration should be done AFTER the change to 2 pass
Kin Ein [MeV] HRS(L) Electrons HRS(R) Protons BigBite 
 (not in use)
Neutron Arm 
 (not in use)
Target Plots MCEEP
G# P(e') Theta (e') P(p) Theta (p) P Theta P Theta
1 2262 2090.3 15 592 -65.8 Carbon Kin Map
2 2262 2139.9 12.5 493 -69.5 Carbon Kin Map
3 1162 1157.9 15 1157.9 -15 Carbon Kin Map

=

BigBite Calibration

H(e,e'p) HRS(L) and BigBite

Kin Ein [MeV] HRS(L) Electrons HRS(R) 
 (not in use)
BigBite 
 (-68 Deg)*
Neutron Arm 
 (not in use, at 50 deg)
Target Plots MCEEP
A# P(e') Theta (e') P Theta P(p) Theta (p) P Theta
1 1162 1099.0 17.5 -12.5 349.5 71.0 -50 4cm LH2 Kin Map
2 1162 1077.5 20.5 -12.5 407.1 68.0 -50 4 cm LH2 Kin Map
3 1162 1057.9 23 -12.5 454.2 65.5 -50 4 cm LH2 Kin Map
4 2262 2139.7 12.5 -12.5 494.4 69.5 -50 4 cm LH2 Kin Map
5 2262 2090.3 15 -12.5 593.0 65.8 -50 4 cm LH2 Kin Map -
  • We do not know how to get within the constrains protons of more than 600 MeV/c to BB for Calibration.
  • 1st pass is not sure due to Qweak

Full acceptance calibration of BigBite C(e,e'p)

Kin Ein [MeV] HRS(L) (not in use) HRS(R) (not in use) 
 (not in use)
BigBite 
 (-68 Deg)*
Neutron Arm 
 (not in use, at 50 deg)
Target Plots MCEEP
B# P(e') Theta (e') P Theta P(p) Theta (p) P Theta
1 2262 27 -12.5 -68 -50 1 mm Carbon Kin Map
2 2262 27 -12.5 -68 -50 multifoil Carbon Kin Map

Full acceptance calibration of BigBite d(e,e'p)

Kin Ein [MeV] HRS(L) (not in use) HRS(R) (not in use) 
 (not in use)
BigBite 
 (-68 Deg)*
Neutron Arm 
 (not in use, at 50 deg)
Target Plots MCEEP
C# P(e') Theta (e') P Theta P(p) Theta (p) P Theta
1 2262 27 -12.5 -68 -50 4 cm LH2 Kin Map

Neutron Array calibration

H(e,e'p) HRS(L) and Neutron Array for protons

Kin Ein [MeV] HRS(L) Electrons HRS(R) 
 (not in use)
BigBite 
 (Not in use)
Neutron Arm 
  no lead wall 
 50 Deg 15m from target
Target Plots MCEEP
D# P(e') Theta (e') P Theta P(p) Theta (p) P Theta
1 2262 1777.75 27.5 -12.5 68 1069.2 -50 4 cm LH2 Kin Map

d(e,e'pn) x<1 HRS(L), HRS(R) and Neutron Array

Kin Ein [MeV] HRS(L) PROTONS HRS(R) ELECTRONS BigBite at -99 Deg, Magnet on 
detector off
Neutron Arm 
 Behind BigBite and lead wall
Target Plots MCEEP
E# P(p) Theta (p) P(e') Theta(e') P Theta P(n) Theta(n)
1 2262 778.7 59.2 1948.7 -12.5 -99 250 -99 4 cm LH2 Kin Map
2 2262 985.8 51.9 1757.9 -12.5 -99 400 -99 4 cm LH2 Kin Map
  • In this calibration we need to switch the polarity of HRS arms.
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