2015-08-07 Accelerator R&D Biweekly Report

CASA Accelerator R&D
Biweekly Report: 07/25/15 - 08/07/15
Submitted by: Yuhong Zhang

Slava Derbenev

1. Continued working on scanning synchronization scheme and supporting technology, gave a short presentation at the discussion session
2. Studied the gear-change beam-beam instability
3. Worked with Yuhong on scientific program for
4. COOL15 workshop
5. Gave a presentation at Rick's Café

Fanglei Lin

1. Optimizing the storage-ring cooler optics to obtain small chromaticities and a large emittance.
2. Writing a python translator to convert the MADX output file of rings’ optics into a ZGOUBI input file with the required format.
3. Continued working on the improvement of code SLICKTRACK.

Vasily Morozov

1. Study of beam synchronization (presentations at the R&D and NP meetings).
2. Study of non-linear dynamics in the ion collider ring (tracking, working with Guohui, teleconference with SLAC).
3. Ion polarization (support of Anatoliy's group, teleconference with them)
4. Completion of a draft of an EPIC closeout report.
5. Beam-beam code development (writing a paper on the tracking results).
6. Isotope production (calculations, tracking, working with Amy). Lower effort activities: detector integration, electron cooling, SBIR.

Amy Sy

1. Beam optics simulations for ERL/isotope production project
2. Converging electron beam vs beam waist and resultant photon beam distributions.
3. Effects of solid photon radiators on electron and photon beam phase space distributions.
4. Induced angular spread and photon yield dependence on photon radiator thickness.

Guohei Wei

1. Made Dynamic aperture maps for 2 CCB lattice of MEIC ion ring. Found 3 problems in dynamic aperture maps studies in CODE Elegant. One was solved, while two other under considering.
2. Made a nonlinear parameter table for 2 CCB lattice of MEIC ion ring, including high order chromaticity and dynamic aperture with off momentum, etc.
3. Initated error studies of first step for MEIC ion ring. Considering misalignment, strength error, BPM noise and corrector jitter.

Yuhong Zhang

1. Organized two discussion sessions on beam synchronization
2. Developed several new ideas on beam synchronization and collaborated with Vasily Morozov and Jiquan Guo
3. Continued working on cooling demo LDRD
4. Continued to work with Slava to complete COOL15 workshop program
5. Supported Fulvia on MEIC R&D planning

What are expected in the next two weeks

nothing special