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Shukui's proposal [[media:190821_LERF_DL_Upgrade.xlsx]]

* Shukui + on-leave * Carlos, Marcy, Riad, Shukui, Matt

# Report by Shukui on CEBAF laser status & TMG # Updates by Riad, Steve, Shukui on TMG check-lists

:*Shukui's proposed JLab Collaboration w/ Shandong University for Generation of Inte

Attending: John, Riad, Shukui, Kent, Caryn, Joe

** laser - shukui/steve<br />

# Revisit the project background and test plan for Shukui/John/Tomasz.

#Shukui

; Shukui update on CRADA

** Adriana and Shukui did a calibration of the laser power meter located inside the hutch and rea ...vered that the bad laser shape is due to a damaged polarizer in the hutch. Shukui gave permission to fix the problem.

#Shukui

** Shukui is making great progress with the laser transport system ** Shukui lent us a chiller, still needs to be connected

* IPAC'22 (Max, Riad, Sami, Shukui, Sunil)

4. Bubba/Carlos/Shukui - Plans for recovering gun/photocathode + laser @ LERF 6. Marcy/Shukui/Joe - Characterization tests of GaAs/GaAsP, DBR, Sb-cathode

** Shukui – Talk/Poster, Title:

* Shukui - 35% RSR, 65% R&D * Shukui's LDRD (Sep, 2023)

* IPAC'22 (Max, Riad, Sami, Shukui, Sunil)

; Shukui - KL workshop

* Shukui - test 12 Mhz beam generation at UITF, Max to test w/ beam * Shukui - submit PR for beam profiler for UITF

* (Shukui) - Describe modifications to laser layout, show a sketch ::Shukui will make/post preliminary layout of laser table table, pics

* On-call, Shukui laser training? * UITF schedule meeting just after 1:30 today...Shukui, Carlos, Max, Marcy, Phil

...tified., As soon as Jason Delk / Eric Diggs completes magnet installation, Shukui can proceed mounting optics near the gun with the shelves already in place.

...oder board (Riad), helicity magnets upgrade (Joe), RTP helicity HV driver (Shukui) * Shukui KL laser

* Status of UITF (Mamun, Shukui)

* (Shukui) optical function & evaluation [[media:SZ_TMG_evaluation_meeting_04112024.p

* Shukui - Green fiber laser

: Harmonic kicker - Max, Shukui

** Shukui has aligned the laser to the gun chamber entrance viewport! ** The GTS drive laser control is not working except the motor control. Shukui talked with Wes last week, he agreed to help with the GTS DL EPICS togethe

** Shukui has a plan to have full control of the laser output power and variable atte ** We should let Shukui take the time to give us full control of the laser power and attenuator.

* Plan for CEBAF from now until the SAD begins (Shukui, Steve, Riad), ...an to irradiate target foils with e- beam and laser at LERF Lab 6 (Andriy, Shukui, Silviu, Sandesh, Mamun) [[media:2022-12-13-Target-Tests.pptx]]

* Green fiber laser, Shukui

** Adirana and Shukui got the laser power control with a couple of PCs, one controls the actual V

#Shukui (31MHz laser)

* Laser: (Shukui)

* Laser: (Shukui)

* Shukui: get green laser into gun, power meter working, attenuator working. Laser

:: ...let's review laser plan with Shukui (replace Hall A mode-lock with temp regulating seed, continue developing/te

** JLAB : Joe (PI), Carlos (HV insulator), Silviu/Shukui (laser fatigue), Andriy/Eric (irradiation fatigue), Mamun (material analysi

* Green fiber laser, Shukui

* Shukui ~ need your input on the laser * Shukui - Green fiber laser

* laser: digital pulsing vs. picking - depends on Shukui, John

* Laser: (Shukui)

* laser: digital pulsing vs. picking - depends on Shukui, John

* Laser: (Shukui)

* Shukui - Green fiber laser

* Green fiber laser, Shukui

* Shukui - Green fiber laser

; Shukui (5 min) - Laser status and startup plans

'''[[Shukui Zhang]]''' x5575

* Phil installed shelves for the laser optics. Shukui is working on alignment to mark positions on the ceiling for mirrors.

* Shukui - Green fiber laser

** Shukui and Carlos to work with software for re-commissioning cathode QE scanner. T

* Shukui - install new amplifier for KL, test 499/32 setup, measure D pulse length,

* Shukui - Green fiber laser

* Shukui - Green fiber laser

* Shukui and Matt are talking about laser, what takes to get us started for RF timin

...acios-Serrano, Steve Covert, Marcy Stutzman, Andriy Ushakov, Md. Al Mamun, Shukui Zhang. Not pictured Carlos Hernandez-Garcia and Jessica Carucci. (8/1/23)]

: USPAS (Max, Shukui)

:Aaron, Omar, John, Roger, Caryn, Shukui, Joe

...ing to control rep rate and how it will interface to the control room, and Shukui can you make a couple of slides summarizing the tests you are doing to comp

* Shukui LTT the laser :: ...let's review laser plan with Shukui (replace Hall A mode-lock with temp regulating seed, continue developing/te

...ttenuators is not responding properly to commands form the control screen. Shukui has contacted Scott Higgins.

* Shukui completed the LSOP and is now approved and in the EH&S system.

***1) dc laser light making dc beam. Shukui thinks he has all the necessary epics control to adjust laser power and ope

* Shukui and Aziz published paper https://aip.scitation.org/doi/10.1063/5.0130884

* Shukui - Green fiber laser

* Green fiber laser, Shukui

* LDRD's - Shukui, Joe

* Shukui - Green fiber laser

: June 5-16 (Shukui teaching laser class, Max taking RF class), U.S. Particle Accelerator Schoo

* (Shukui, Joe, Tomasz, Reza) Install and test mode locked fiber laser https://opsweb

* Shukui installing ML-laser 2/8-11

** Insertable 1/2-waveplate => Shukui needs help

** Insertable 1/2-waveplate => Shukui needs help

## Shukui installed ND3 filter on spare servo motor 2. We should start using this ND

...echt, Reza Kazimi, Matt Poelker, Daniel Moser, Marcy Stutzman, R. Suleiman Shukui Zhang "Milliampere beam studies using high polarization photocathodes at th

:During year working group grew w/ Dave Gaskell (Compton polarimeter) and Shukui Zhang (OAM laser)

3) gain switched MO and fiber amplifier at 1064/532nm (POC, Shukui)

*(Joe/Shukui) Align the rest of the beamline

...with pump out port to the upstream of the gun valve with the goal to help Shukui and S&A to se the laser launch for laser retro-reflection after the gun is

** Shukui measured the transmission ,Laser: 532nm/ p-polarized

...r firepipe install wrapped up, I will schedule a time next week to meet w/ Shukui about new laser box, need in ~month

*pA BPMs, purchase in-line fiber modulator (Shukui)

Yoshitaka Taira, Shukui Zhang, "''Split in phase singularities of an optical vortex by off-axis dif

* Align laser to photocathode, using retro and QE (8/5) [Shukui]

...t actually depend on the availability of the kicker. Max will reach out to Shukui to find out how realistic it would be to get a 6 MHz beam this year (f/121/

...n pockles cell, laser output was lower. I increased the amplifier power at Shukui's direction)

::Shukui, tight, how to fit optics, inside laser room?

* Xincun Peng, Matt Poelker, Marcy Stutzman, Bin Tang, Shukui Zhang, and Jijun Zou, "''Mie-type GaAs nanopillar array resonators for nega ...ng Wang, Yun Liu, Dennis M. Manos, Matt Poelker, Marcy Stutzman, Bin Tang, Shukui Zhang, and Jijun Zou, "''Optical-Resonance-Enhanced Photoemission from Nano

* Align laser to photocathode, using retro and QE (8/5) [Shukui]

* Align laser to photocathode, using retro and QE (8/5) [Shukui]

* Shukui ? * Wei Lui, Matt Poelker, Shukui Zhang, Marcy Stutzman, "Spin Polarization Sensitivity of Electrons Emitted

...r firepipe install wrapped up, I will schedule a time next week to meet w/ Shukui about new laser box, need in ~month

: Shukui - Laser outrigger table as-founds, remove components * Laser table disassembly (Shukui/Scott)