1. JLEIC simulation report 3/09/2017 Y. Roblin

2. Recommendations from report
Beam Beam:
Investigate pushing to higher beam beam parameters
Simulate the gear-change synchronization, develop tool for it.
Crabbing
Simulate crabbing (detailed list in report)
Come up with an alternate setup in case crabbing cavities do not perform as needed.
Other: two stream instability (e- cloud) and use of feedback systems to counteract it.

3. Workplan (cont) Beam-Beam effects (BB3D, GHOST)
Run at the nominal parameters over many turns.
Scan luminosity versus e- beam current
Scan luminosity versus p beam current
Determine beam-beam limits
Repeat with non linear map (3rd order or higher). Map produced via MAD-X and COSY. (GHOST)
Estimate dynamic aperture using the previously determined working points. Adjust and iterate.
Compare dynamic beta effect on electron beam with theoretical estimates GHOST, BB3D

4. Simulated configurations
From the 2015 MEIC report, table 3.1, 44.7 GeV CM
From eic.jlab.org/wiki , the latest set for 44.7 GeV CM

5. 2015 design point e Energy 5 gamma 9784.735812 tune shift e
tune shift e
x norm emit
144
E-08
sigmaX
E-05
1.40E-02
y norm emit 72
7.3584E-09
sigmaY
E-06
betax
2.60E-02
betay
1.30E-02 p
4.00E-02
energy
100
2.00E-02
tune shift p 1
9.3828E-09
1.9373E-05
6.23E-03
0.5
4.6914E-09
E-06 Np
6.60E+09 Ne
3.90E+10
L cm-2 corrected
2.82E-15 re
Luminosity
5.10E+37
5.10E+33
4.53E+33
1.53E-18 rp
RF frequency
4.76E+08
6.58E-16
hbar
Hourglass
8.88E-01
alpha
bunchlength
1.20E-02
1.00E-02
HG calc
tx^2
7.84E+00
1.28E-01
ty^2
1.92E+00
5.20E-01
wolfram:
integrate e^-x^2/sqrt( *x^2)/sqrt( *x^2)/sqrt(pi) from -infinite to infinite
tracked L=

6. Results for strong-strong simulation
Predicted with hourglass

7. GHOST comparisons

8. GHOST comparisons(cont)

9. GHOST comparisons(cont)

10. EIC 44.7 GeV CM design

11. Luminosity 100K turns
Preliminary: Still accessing convergence and influence of longitudinal slicing and nbr of particles. Comparison with other codes ongoing.

12. Beam size evolutions

13. Strong-Strong 100K turns

14. Strong-Strong 100K turns(cont)