CeC EIC Physics Meeting

Meeting Goals

The CeC EIC meeting is the place where the CeC experiment, physics and design issue of the CeC-based EIC cooling effort are discussed.

Meeting Agenda

• 04/19/2024:
  • Update on Mathematica code (solenoid field fitting and its impact on beam envelope evolution in cooling section), by V.N. Litvinenko;

• 04/12/2024:
  • Ion tracking results for the latest setup with 50 A but larger slice-to-slice energy deviation (041124, slides 41-47), by G. Wang;

• 03/29/2024:
  • SPACE simulation: cooling field for setup 04112024, by J. Ma;

• 06/30/2023:
  • SPACE simulation: emittance evolution along cooling section with action based cutting and sensitivity study of cooling force (current and emittance), by J. Ma;

• 04/07/2023:
  • Benchmarking Impact-T and SPACE in the CeC PCA Section (matching core of electron beam), by K.Shih;

• 03/31/2023:
  • Benchmarking Impact-T and SPACE in the CeC PCA Section, by K.Shih;

• 03/17/2023:
  • SPACE simulation (benchmarking with impact-t to resove discrepancy in emittance growth with space charge), by J. Ma;

• 03/10/2023:
  • Update on CeC beam simulation, by Y. Jing;

• 01/27/2023:
  • SPACE simulation (reasons for emittance growth was found and corrected), by J. Ma;

• 01/20/2023:
  • PCA solenoids nonlinearity, by V. Litvinenko;

• 01/13/2023:
  • Updates on SPACE simulation (Gaussian transverse distribution and unexpected emittance growth), by J. Ma;
  • Emittance growth in PCA, by K.Shih;
  • Fitting formula for CeC-X solenoids in the cooling section, by V. Litvinenko;

• 12/16/2022:
  • Dependance of PCA gain on solenoids' current, by J. Ma;

• 11/18/2022:
  • Update on CeC beam simulation, by Y. Jing;
  • Updates on SPACE simulation (with transverse dependance), by J. Ma;
  • Updates on ion tracking simulation with new wakes from SPACE simulation (with transverse simulated dependance), by G. Wang;

• 10/21/2022:
  • Solenoid misalignment scan, by K. Shih;

• 10/14/2022:
  • SPACE simulation of CeC X with Run21 e beam with solenoid settings optimizing center slice, by J. Ma;
  • Beam dynamic simulation for electrons with different initial current profile, by K.Shih;

• 10/07/2022:
  • SPACE simulation of CeC X with Run21 e beam with different solenoid settings, by J. Ma;
  • Updates on ion tracking simulation with new wakes from SPACE simulation (new solenoid settings), by G. Wang;

• 09/30/2022:
  • Updates on ion tracking code for the CeC experiment(the cooling force now depends on the local properties of the electrons that overlaps with the ion), by G. Wang;
  • Updates on the beam dynamics simulation(new distribution with more uniform beam parameters around core), by Y. Jing;
  • Estimate of the reduction of the cooling force due to longitudinal slipping of the off-momentum ions for the CeC experimen, by G. Wang;

• 09/02/2022:
  • SPACE simulation of CeC X with Run21 e beam for 5 slices sitting to the left (head) of the peak, by J. Ma;
  • Emittance measurement: new way (updates, waiting for the file...), by K.Shih;

• 08/19/2022:
  • SPACE simulation of CeC X with Run21 e beam for 3 slices and check sensitivity to charge variation, by J. Ma;
  • Emittance measurement: new way (updates), by K.Shih;

• 08/12/2022:
  • Simulation of impact due to laser intensity jitter (updates), by K.Shih;
  • Simulation results with electron bunch formed by combining two Guassian laser pulses, by Y. Jing;

• 08/05/2022:
  • SPACE simulation of CeC X with increased solenoids current and check superposition (100 ions), by J. Ma;
  • Analysis of solenoid measurement, by I. Pinayev;
  • Simulation of impact due to laser intensity jitter, by K.Shih;
  • Emittance measurement: new way (updates), by K.Shih;

• 07/29/2022:
  • Tracking for PCA Solenoids, by I. Pinayev;
  • Slice Emittance Measurement: new way, by K.Shih;
  • Impact-T Simulation in Misaligned CeC Beamline, by K.Shih;

• 07/22/2022:
  • Dependance of cooling force on the current of solenoid 3-5, by J. Ma;
  • Laser profile-Gaussian vs flattop, by Y. Jing;
  • Analysis of Magnetic Measurements Data of PCA Solenoids On axis, by I. Pinayev;
  • Kicker for Buncher transverse Kick Compensation, by V. Litvinenko;
  • Electric and magnetic fields along the beam axis of NSLS-II kicker, by M. Sangroula;

• 07/08/2022:
  • Cathode and SRF gun axis, by V. Litvinenko;
  • Optimization of the CeC Kicker’s cross section, by M. Sangroula;

• 05/20/2022:
  • Requirements for CeC systems, by Y. Jing;
  • Tolerance on the Bunch-by-Bunch Energy Jitter for the CeC Experiment, by G. Wang;

• 05/18/2022:
  • CeC Physics, by J. Ma;

• 03/18/2022:
  • More Realistic Signal Suppression and Detection, by W. Bergan;

• 02/04/2022:
  • Some 3D effects in MBEC, by G. Stupakov;
  • Updates on 3D simulations for the CeC experiment, by J. Ma;

• 01/21/2022:
  • Slice Emittance Measurement on CeC Diagnostic Beamline, by K. Shih;

• 11/12/2021:
  • APEX on Recombination studies at LEReC, by D. Kayran;
  • Updates on 3D simulations for the CeC experiment, by J. Ma;

• 10/29/2021:
  • CSR and space charge impedance in MBEC for EIC, by G. Stupakov;
  • 1D vs 3D model for microbunched electron cooling, by P. Baxevanis;

• 10/15/2021:
  • 3D cooling with PCA μ bunching CeC, by V. Litvinenko;
  • Progress on EIC Strong Hadron Cooling, by E. Wang;

• 10/01/2021:
  • Updates on SPACE simulation of CeC experiment (50A, various waist), by J. Ma;
  • Benchmarking Impact-T and Parmela for CeC buncher voltage (updated), by K. Shih;

• 09/17/2021:
  • Updates on SPACE simulation of CeC experiment (50A), by J. Ma;
  • Benchmarking Impact-T and Parmela for CeC buncher voltage, by K. Shih;

• 08/27/2021:
  • Dependance of recombination rate on energy deviation of electrons, by G. Wang;

• 08/20/2021:
  • Simulation of traditional electron cooling for CeC experiment, by H. Zhao;
  • The puzzle of the large recombination peak widths measured during the CeC run, by P. Thieberger;
  • Simple model for the energy change for central slice, by V. Litvinenko;
  • Laser Imprint Study with Impact-T, by K. Shih;

• 08/13/2021:
  • eCooling time estimate for CeC experiment, by D. Kayran;
  • Sensitivity studies of PCA gain to e beam parameters, by J. Ma;

• 08/06/2021:
  • Cooling rate analysis (data analysis for run 21 CeC experiment), by K. Shih;
  • Influence of energy jitter (jitter with Gaussian distribution), by G. Wang;

• 07/30/2021:
  • Electron-ion longitudinal misalignment in CeC scheme, by S. Seletskiy;
  • Influence of energy jitter (tracking with wake from 3D simulation), by G. Wang;

• 07/23/2021:
  • Effect of energy jitter (analytical), by V. Litvinenko;
  • Influence of energy jitter (macro-particle tracking), by G. Wang;
  • Simulation of type 2 PCA for EIC (investigating emittance growth), by J. Ma;

• 07/16/2021:
  • Reflections on the bend-based CeC designs (with updates), by Y. Derbenev;
  • Simulation of type 2 PCA for EIC: single cell gain in FFT components, by J. Ma;
  • Study of microbunching instability in an EIC MBEC cooling system, by G. Stupakov;

• 07/02/2021:
  • Cooling decrement with painting, by V. Litvinenko;
  • Simulation of beam size dependence on common section solenoid with SPACE for PoP experiment, by J. Ma;
  • Simulation of type 2 PCA for EIC: influence of solenoid radius to emittance, by J. Ma;

• 06/25/2021:
  • Updates of 1-D PCA model, by G. Wang;
  • PCA amplifier and PCA with wigglers, by G. Stupakov;
  • Reflections on the bend-based CeC designs, by Y. Derbenev;

• 06/11/2021:
  • Coherent electron cooling experiment at RHIC, by V. Litvinenko;
  • EIC SHC design profress, by E. Wang;

• 06/04/2021:
  • MBEC/PCA Cooling time comparison, by W. Bergan;
  • Comments on May 14 presentation by Stupakov, by V. Litvinenko

• 05/14/2021:
  • Comparison of PCA and MBEC for EIC, by G. Stupakov;

• 05/07/2021:
  • CeC for EIC, by V. Litvinenko;
  • Preliminary Estimates for Cooling EIC with PCA Based CeC, by G. Wang;
  • CeC Physics (type I PCA simulation for EIC), by J. Ma;

• 04/30/2021:
  • EIC Strong Hadron Cooling, by E. Wang;

• 04/16/2021:
  • EIC Beam Parameters, by M. Blaskiewicz;

• 04/09/2021:
  • Updates on CeC Physics Meeting, by G. Wang;