Kinematics

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Kinematics

Kinematic Calculators


HRS Calibration

HRS(L) and HRS (R) Elastic C(e,e') [ and Ta(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 1160 1202.1 (1206.1) 15 1202.1 (1206.1) -15 Carbon (Ta) Kin Map
2 1160 1179 (1182.9) 15 1179 (1182.9) -15 Carbon (Ta) Kin Map
3 1160 1155.9 (1159.7) 15 1155.9 (1159.7) -15 Carbon (Ta) Kin Map
4 1160 1132.8 (1136.5) 15 1132.8 (1136.5) -15 Carbon (Ta) Kin Map
5 1160 1109.6 (1113.3) 15 1109.6 (1113.3) -15 Carbon (Ta) Kin Map
  • The setup is according the Elastic scattering from Carbon
  • Values in brackets for Ta
  • With Sieve slit In/Out and multi foil target
  • Additional run at H3 kinematics with raster on

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

Original Kin Table


Kin Ein [MeV] HRS(L) Electrons HRS(R) Electrons BigBite 
 (not in use)
Neutron Arm 
 (not in use)
Target Plots MCEEP
I # P(e') Theta (e') P(e') Theta (e') P Theta P Theta
1 1160 1157.6 15 1157.6 -15 Carbon Kin Map
2 1160 1135.4 15 1135.4 -15 Carbon Kin Map
3 1160 1113.1 15 1113.1 -15 Carbon Kin Map
4 1160 1090.84 15 1090.84 -15 Carbon Kin Map
5 1160 1068.6 15 1068.6 -15 Carbon Kin Map
  • Calibration for relative acceptance measurement With Sieve slit Out

HRS(L) and HRS (R), Delta resonance C(e,e') - One pass

Kin Ein [MeV] HRS(L) Electrons HRS(R) Electrons BigBite 
 (not in use)
Neutron Arm 
 (not in use)
Target Plots MCEEP
L # P(e') Theta (e') P(e') Theta (e') P Theta P Theta
1 1160 818.2 15 818.2 -15 Carbon Kin Map
2 1160 802.4 15 802.4 -15 Carbon Kin Map
3 1160 786.7 15 786.7 -15 Carbon Kin Map
4 1160 770.9 15 770.9 -15 Carbon Kin Map
5 1160 755.2 15 755.2 -15 Carbon Kin Map
  • W^2 = M^2 - Q^2 + 2*M*nu (W=1232 MeV)
  • Calibration for relative acceptance measurement With Sieve slit Out

HRS(L) and HRS (R), Delta resonance C(e,e') - Two pass

Kin Ein [MeV] HRS(L) Electrons HRS(R) Electrons BigBite 
 (not in use)
Neutron Arm 
 (not in use)
Target Plots MCEEP
M # P(e') Theta (e') P(e') Theta (e') P Theta P Theta
1 2258 1843.4 15 1843.4 -15 Carbon Kin Map
2 2258 1807.9 15 1807.9 -15 Carbon Kin Map
3 2258 1772.5 15 1772.5 -15 Carbon Kin Map
4 2258 1737 15 1737 -15 Carbon Kin Map
5 2258 1701.6 15 1701.6 -15 Carbon Kin Map
  • Calibration for relative acceptance measurement With Sieve slit Out

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

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 1160 820 48.3 867 -44.92 LH2 Kin Map
2 2258 1605 33.8 1285 -44.01 LH2 Kin Map
  • With Sieve slit In/Out

What is this?! We need a right HRS optics run with sieve in and out at ~1.5 GeV/c. I don't understand this at all.

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

  • Polarity change
Kin Ein [MeV] HRS(L) Protons HRS(R) Electrons BigBite 
 (not in use)
Neutron Arm 
 (not in use)
Target Plots MCEEP
G# P(p) Theta (p) P(e) Theta (e) P Theta P Theta
3 2258 1285 44.01 1605 -33.8 LH2 Kin Map
  • With Sieve slit In/Out

HRS(L) and HRS (R) H(e,e'p) (alternative)

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 2258 1420 41.0 1508 -38.13 LH2 Kin Map
  • With Sieve slit In/Out

HRS(L) and HRS (R) H(e,e'p) (alternative)

  • Polarity change
Kin Ein [MeV] HRS(L) Protons HRS(R) Electrons BigBite 
 (not in use)
Neutron Arm 
 (not in use)
Target Plots MCEEP
G# P(p) Theta (p) P(e) Theta (e) P Theta P Theta
2 2258 1508 38.13 1420 -41.0 LH2 Kin Map
  • With Sieve slit In/Out

Quasi Elastic C(e,e'p)

Note : These kinematics were a alternative to the first pass optics data for the two HRS's. See Kinematics H1-H5 above. These data points G4 and G5 are no longer necessary.

Quasi Elastic C(e,e'p) Kin Table

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

Original kin table
These are not quasielastic kinematics. The momentum appears to reflect the delta-resonance region instead.

Kin Ein [MeV] HRS(L) Electrons HRS(R) Protons BigBite 
 (not in use)
Neutron Arm 
 (not in use)
Target Plots MCEEP
F # P(e') Theta (e') P(p) Theta (p) P Theta P Theta
1 4462 3518.5 15 1400 -40.57 Carbon Kin Map
2 4462 3518.5 15 1400 -40.57 Multi Foil Carbon Kin Map
  • 4 pass calibration at x=1, with sieve slit In/Out (Doesn't make sense for right ARM due to punchthrough]

BigBite Calibration

Important : BB calibration can't be done with 3 or 4 pass because we can't lower the HRS left angle below 12.5 deg and BB angle lower than ~ 70 Deg.


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 1160 1097.2 17.5 -12.5 349.5 -71.0 -50 4cm LH2 Kin Map 
 P(p) vs P(e) 
 P(p) vs Ph(p)
 Ph(e) vs Ph(p)
 Mceep summary
2 1160 1076.5 20.4 -12.5 404 -68.08 -50 4 cm LH2 Kin Map 
 P(p) vs P(e) 
 P(p) vs Ph(p)
 Ph(e) vs Ph(p)
 Mceep summary
3 1160 1057.7 22.8 -12.5 450 -65.7 -50 4 cm LH2 Kin Map 
 P(p) vs P(e) 
 P(p) vs Ph(p)
 Ph(e) vs Ph(p)
 Mceep summary
4 2258 2136.1 12.5 -12.5 493 -69.54 -50 4 cm LH2 Kin Map 
 P(p) vs P(e) 
 P(p) vs Ph(p)
 Ph(e) vs Ph(p)
 Mceep summary
5 2258 2086.8 15 -12.5 592.0 -65.84 -50 4 cm LH2 Kin Map 
 P(p) vs P(e) 
 P(p) vs Ph(p)
 Ph(e) vs Ph(p)
 Mceep summary
  • We do not know how to get within the constrains protons of more than 600 MeV/c to BB for Calibration.

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

Kin Ein [MeV] HRS(L) (Electrons) 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 2258 2087 15 -12.5 -68 -50 1 mm Carbon Kin Map
2 2258 2087 15 -12.5 -68 -50 multifoil Carbon Kin Map
3* 2258 2087 15 -12.5 -68 -50 multifoil Carbon Kin Map
4* 2258 2087 15 -12.5 -68 -50 multifoil Carbon Kin Map
  • 3* Same as B2 with Sieve Slit
  • 4* Same as B2 with Sieve Slit and no Field in BigBite

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

Kin Ein [MeV] HRS(L) (Electrons) 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 2258 2086.8 15 -12.5 -68 -50 4 cm LD2 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 2258. 1772 27.6 -12.5 -68 1071 -50.07 4 cm LH2 Kin Map

This can also be done with 4.4 GeV beam and E' of 3.9 GeV and 12.5 degrees with the proton going with 1 GeV to 57 degrees. MUCH higher cross section if done with 4th pass. Not sure why done with 2nd pass?!

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

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.

^ First Kinematics cross section of 0.7E-7 fm^2/MeV/sr^2 BUT recoil is only 250 MeV/c. TOO SMALL?! (i.e. below physics range)

^ Second Kinematics cross section of 0.6E-8 fm^2/MeV/sr^2 for recoil of 400 MeV/c

4400 GeV beam 4068 & 12.5 electron with -35.5 & 628 proton which will put a 527 MeV/c neutron into 99 degrees. [MCEEP PWBA sigma of 0.8E-9 fm^2/MeV/sr^2 BUT should x10 higher due to FSI in these kinematics]

For cm of exactly 90 4400 GeV beam 12.5 electron and 15 degrees proton at 700 MeV/c 0.1E-9 {no FSI in simulation}

Production

D(e,e'pn) Triple coincidence for x>1

Kin Ein [MeV] HRS(L) Electrons HRS(R) Protons BigBite Neutron Arm Target Plots MCEEP
K# P(e') Theta (e') P Theta P(p) Theta (p) P Theta
2 4454 3601.4 20.33 1375.8 -33.4 500 -98.23 500 -98.23 4 cm LD2 Kin Map
6 4454 3601.4 20.33 1468.9 -40.5 300 -97.63 300 -97.63 4 cm LD2 Kin Map

Kin2 above is 0.16E-10 fm-2/MeV/sr2 (0.04 (e,e'p) events per sec.) or ~2 events per minute (15cm target)

Kin6 above is 0.3E-9 fm-2/MeV/sr2

He(e,e'pp)/(e,e'pn) Triple coincidence for x>1

Kin Ein [MeV] HRS(L) Electrons HRS(R) Protons BigBite Neutron Arm Target Plots MCEEP
K# P(e') Theta (e') P Theta P(p) Theta (p) P Theta
1 4454 3601.4 20.33 1427.6 -36.9 400 -99.29 400 -99.29 4 cm LHe4 Kin Map
2 4454 3601.4 20.33 1375.8 -33.4 500 -98.23 500 -98.23 4 cm LHe4 Kin Map
3 4454 3601.4 20.33 1296.6 -29 625 -95.22 625 -95.22 4 cm LHe4 Kin Map
4 4454 3601.4 20.33 1201 -24.45 754.7 -91.22 754.7 -91.22 4 cm LHe4 Kin Map
5 4454 3601.4 20.33 1099.2 -20.1 875 -87.06 875 -87.06 4 cm LHe4 Kin Map


Production (alternative) Q2=1.8

Notice : Mott Cross Section for Q2=1.8 GeV^2 is 1.32 times higher than Mott Cross Section for Q2=2 GeV^2

D(e,e'pn) Triple coincidence for x>1

Kin Ein [MeV] HRS(L) Electrons HRS(R) Protons BigBite Neutron Arm Target Plots MCEEP
L# P(e') Theta (e') P Theta P(p) Theta (p) P Theta
1 4454 3686.6 19.06 1270.8 -34 500 -99.68 500 -99.68 4 cm LD2 Kin Map
2 4454 3686.6 19.06 1366.9 -41.65 300 -99.97 300 -99.97 4 cm LD2 Kin Map

He(e,e'pp)/(e,e'pn) Triple coincidence for x>1

Kin Ein [MeV] HRS(L) Electrons HRS(R) Protons BigBite Neutron Arm Target Plots MCEEP
M# P(e') Theta (e') P Theta P(p) Theta (p) P Theta
1 4454 3686.6 19.06 1323.97 -37.75 400 -101.14 400 -101.14 4 cm LHe4 Kin Map
2 4454 3686.6 19.06 1270.8 -34 500 -99.68 500 -99.68 4 cm LHe4 Kin Map
3 4454 3686.6 19.06 1190.2 -29.3 625 -96.3 625 -96.3 4 cm LHe4 Kin Map
4 4454 3686.6 19.06 1090.1 -24.3 755.5 -91.83 755.5 -91.83 4 cm LHe4 Kin Map
5 4454 3686.6 19.06 984.13 -19.55 875 -87.25 875 -87.25 4 cm LHe4 Kin Map
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