2024 End-of-Run MD programs and final data collection
Programs to collect additional data, further push diagnostics and software for future development.
MD Item | Procedure Link | Machine Time | Responsible Party | Requirements | Details |
---|---|---|---|---|---|
Test LI17/LI18 PAU functionality for S20 energy feedback improvements | 1 shift | Preferred beam to dump, requires EP01 micro | Attempt to recommission fast phase shifters (LI17 and LI18 PAU subboosters) previously used for EP01 energy feedback. Will need some crusty old crates revived and almost certainly a lot of sage SLC timing guru guidance. | ||
Collect SYAG data with variable compressions | 4 hours | Beam to dump | Data collection to interpret compression profile of SYAG with the goal of further calibrating that screen. | ||
Improved BC20 BLEN vs L2 chirp | 1 Shift | Beam to dump, more XTCAV juice | Recollect data for actual XTCAV bunch length over a chirp scan now that we have more streaking. Possibility for a 2 dimensional scan by repeating with variable L1 compression. Suggested to not recalibrate XTCAV during scans. | ||
Injector LLRF firmware updates | 1-3 days (passive) | TID readiness | Upgrade the LLRF firmware for 10-2, 10-3, and 10-4 to match newer versions deployed at 10-5 and LCLS XTCAV. Should be fairly quick to implement, but preferred to have at least a few days to monitor to make sure it works as expected. | ||
Any outstanding RP surveys | 4 hours | Variable | Parts f (beam to heater screens) and maybe n (external surveys with beam to S20 collimators/notch) or others. | ||
2 nC stability tests | 1 shift | Beam to dump | Investigate emittance blow up at higher charge, see if this reproduces with single bunch now that we have consistently compressed beam at 1.6 nC. | ||
PLIC indexing | 10 minutes | Beam to dump | Generate losses in known locations to calibrate X xcale of PLIC (for known scope settings) in order to have a calibrated loss monitoring system. | ||
Software commissioning | 2-4h | Beam to dump |
2024 MD Planning & Priorities
Priority | MD Item | Procedure Link | Machine Time (shifts) | Responsible Party | Needed By | Prerequisites | Notes | Complete |
---|---|---|---|---|---|---|---|---|
3 | Injector setup for 10deg off Schottky zero crossing | 3 | White | TCAV0 operational | Maybe investigate smaller laser spot | |||
3 | Laser spot size variation | Discussion with Glen... | ||||||
4 | Very low bunch charge setup | Laser spot size variation study | ||||||
3 | Linac Ballistic Data | 5 | ||||||
3 | S20 Ballistic Data | Good pencil beam config S20 Quad BBA, energy feedback | ||||||
3 | Individual mechanical<>magnetic offsets in L2 | Loney | ||||||
1 | 10-2 peak power | 1 | Kalsi, Loney |
Move peak power detection from WVG FWD to cavity probe. Follow up with RF and TID to get the Software diagnostics built out. | Partial, watch & wait | |||
1 | S20 BBA | 2 |
Kalsi | 2/6/2024 |
2-4 | Notch Collimator recommissioning | 1+2 | Loney | Completion of RP Survey and Monitoring Plan parts N and Q | Current energy spread may not be compatible with clean cuts | |||
2 | S20 matching studies/emittance in S20 | 1 | Loney | Good pencil beam config, S20 Quad BBA, S20 launch feedback | ||||
3 | 2nC running/instability investigation | 2 | Loney | FJD interested | ||||
1 | Two-bunch prep/setup | Two-bunch config development | 8 | Yocky |
, Majernik, Buschmann | 4/2 - 4/3 2024 | linked plan is for first ~2 shifts | ||
4 | BLEN sensitivities | BLEN Sensitivities MD |
Kalsi | ||||||||
2 | S20 BLEN | Kalsi | ||||||
2 | Investigate orbit dependent matching into L2 | Loney | BBA, working steering app | FJD notes similar issue in LCLS–likely eta from BC1 | ||||
1 | Complete ORM | Loney | Analysis tools | Done? | ||||
2 | Tuning IP with smaller beta* | Yocky | ||||||
1 | Pencil beam config | Oct 13, 2022 |
Kalsi | ||||||||
1 | Flag beam config | Feb 2, 2024 | Parker | |||||
3 | Learning data for MDL FF / Track hardware issues | Oct 6, 2022 | Perez, Loney | |||||
4 | RF kicks |
Kalsi | ||||||||
4 | Linac BBA (rechecks) | BBA Shift Plan | Loney | |||||
3 | Toroid ringing investigation | Sep 1, 2022 |
Kalsi | ||||||||
4 | Injector RF Standby triggering | Loney | ||||||
2 | Automated Steering development | Buschmann |
, Cesar | good R measurements and ability to implement those into steering app | |||||||
2 | L1 orbit stability study | Oct 6, 2022 | Parker | |||||
2 | RF stability (jitter, jumps, and djrift) | Sep 15, 2022 | Ripman | |||||
3 | PCAV 0 commissioning | 2 | Loney | Thing works | ||||
2 | TCAV3 commissioning | 2 | Thing works | |||||
2 | DC magnet stability | Sep 29, 2022 | Parker | |||||
2 | TCAV0 study (sigz v. Sch. phase, etc.) | Oct 6, 2022 TCAV0 Shift Plan | Parker | Done? | ||||
1 | Linac wakefield bump tuning exploration | Yocky,Kalsi | ||||||
Laser heater TTO | 1 | Majernik | 3/11/24 | |||||
3 | Stability improvements to IN10 RF | 2 |
Cesar | 2/19/24 | Implement in 10-5 first, then L0 stations, lastly 10-2 | |||
1 ? | Longitudinal Feedback Debugging | shift plan draft | 0 |
.5 | Buschmann | Stable beam to S20 |
Mainly forensic | |||
2 | BC14 chicane exploration | shift plan draft | 0.5 - 1 |
Buschmann | Stable beam to |
S20 | ||||||||
Software development/testing |
Standby Machine Development (SMD)
MD Item | Procedure Link | Machine Time | Responsible Party | Required beam destination | Notes | Completed |
---|---|---|---|---|---|---|
Injector wire commissioning | TD11 | Find wires, verify planes | ||||
Compare injector wire emittances to 571 quad scan | TD11, IN10 561 wire | Sounds like the kind of task that will challenge your faith in our most reliable measurement | ||||
Characterize BC11 Collimators | ||||||
Characterize BC14 energy offset | ||||||
Stagger L1 chirp | (draft) | 1-2h | Buschmann | TD11 initially, S20 after setup | want to characterize effect on longitudinal phase space, emittance growth in L2 and relationship with collimation of beam tails/losses in BC14 | |
S20 Configurator variable waist scans | 2 shifts | Beam to dump | Measure IPWS1 sizes with fix X and variable Y, and through different waist shifts | |||
YOUR IDEAS HERE | Curious about something? Propose a study to get data about it! |
Past Completed MD Programs
MD Item | Procedure Link | Machine Time (shifts) | Responsible Party | Prerequisites |
---|
Results, notes | Completed | |
---|---|---|
S20 BBA | Oct 13, 2022 | 2 |
Kalsi | x | |||||
S20 matching studies/emittance in S20 | Sep 29, 2022 | 1 | White | Good pencil beam config, S20 Quad BBA, S20 launch feedback | x | |
2nC running/instability investigation | 2 | Loney | FJD interested | x | ||
Pencil beam config | Oct 13, 2022 | Alsberg | x | |||
Learning data for MDL FF / Track hardware issues | Oct 6, 2022 | Alsberg | ? | |||
Linac BBA | BBA Shift Plan | Loney | x | |||
Toroid ringing investigation | Sep 1, 2022 | Alsberg | ? | |||
DC magnet stability | Sep 29, 2022 | Parker | x | |||
Linac wakefield bump tuning exploration | Yocky | ? | ||||
Commissioning Laser Heater | Yocky* | Laser Heater Commissioning Task List | x | |||
7-hole Cathode Alignment Procedure | <1 | Loney | x | |||
Simple 3nC Setup | 1-hour | Loney, Kalsi | Good Starting point at current charge configuration | x | ||
SYAG energy calibration | Loney | Low energy spread | Average of 54.7 keV/um but lots of variation | 3/8/2024 | ||
DL10 energy minimization vs bunch charge | E-log | Ops | TD11 | 2/13/24 Unoptimized SOL121 | ||
Injector bunch length vs bunch charge | Ops | TD11 | 4/7/2024 | |||
S20 beam density measurements | S20 beam density vs chrip | Ops | FACET dump | |||
S20 beam density measurements | 2 | Loney | 2/5/2024 | |||
XTCAV calibration vs power | FACET dump | 4/20/24 Data | ||||
XTCAV Resolution vs IP config | Loney | FACET dump | Compare different beta*s at nominal IPWS1, DSOTR, and possibly other locations/shifts | 4/20/24 | ||
New phase scan GUI | commissioning notes (5/6/24) | Buschmann | tested in L0, L1 and L2-3. deployed to prod. |
Link to FACET-II Global Planning Airtable
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