2015-Sep-18 Accel. R and D Biweekly Report

Slava Derbenev

• Completed an analytic estimations of space charge effect on the cooling electron beam at the ERL and the cooling solenoids and gave a talk at the MEIC accelerator R&D meeting
• Continued MEIC conceptual design studies
• Continued the organization work of COOL15 workshop and collaboration meetings
• Gave two talks in Rick's cafe

Fanglei Lin

• Looking at electron polarizations at high energies in the MEIC electron collider ring.
• Provided various electron ring downstream chicane optics and beam sizes, required by nuclear physicists.
• Continued working on establishing ZGOUBI, GPUSPINK and PTC.
• Will attend the COOL15 workshop from Sep.28 to Oct.2.

Vasily Morozov

• Ion polarization: helping Anatoliy's group prepare DSPIN presentation, racetrack booster, presentation at one of the R&D meetings.
• Ion collider ring: exploring optics compensation schemes, holding teleconference with SLAC.
• Detector integration: helping with electron polarimeter and beam pipe simulations.
• SBIR: helped prepare three LOIs.
• Isotope production ERL: tracking, optics studies, teleconference with Niowave.
• Beam-beam code development: paper preparation.

Guohei Wei

• Made nonlinear multiple errors of dipole to ELEGANT deck for the MEIC ion Ring. Communicated with Michael Borland to ensure it was done correctly.
• Prepared for the new 96-core computer with Yves Roblin, completed installation of PELEGANT
• Established wiki for the MEIC Single Particle Nonlinear Beam Dynamics with Fanglei Lin and Vasiliy Morozov
• Study decoupling and beta beat matching of the MEIC ion ring

Amy Sy

• Continued work on ERL/isotope production simulations:
  - Quantification of electron energy spread after passage through solid photon radiator.
  - Simulations of refined optics design for rastered, focused electron beams on thicker photon radiators.
  
• Fast kicker LDRD:
  - Met with Andrew Kimber, John Musson to discuss experimental work for inclusion in COOL'15 talk.
  - Kicker simulations for bunch frequency of 952 MHz.
  - Aggregation of material for COOL'15 talk.
  

Yuhong Zhang

• Continued working on bunched cooling LDRD
• Wrote an abstract for a poster on bunched cooling demo and submitted it to COOL15; Working on the poster
• Working on a poster for the JLab LDRD Poster Show
• Continued to write sections for the beam synchronization report
• Continued organization of COOL15 and MEIC collaboration meeting