<td>Overview of 2um spectral broadening experiment progress and challenges at the iFAST facility, accessed via the LaserNetUS program.</td>
</tr>
<tr>
<td>
<timedatetime="2024-03-20">20 Mar 2024</time>
</td>
<td>General overview of FS-LA (LAC talk)</td>
<td>Ingmar</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-04-03">03 Apr 2024</time>
</td>
<td>No meeting</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-04-17">17 Apr 2024</time>
</td>
<td>High Rep Rate Mid-IR Project Plan and Results</td>
<td>Martin Cross</td>
<td>Experience with operating Carbide + Orpheus-ONE OPA and characterization of Mid-IR output pulses.</td>
</tr>
<tr>
<td>1 May 2024</td>
<td>No meeting</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-05-15">15 May 2024</time>
</td>
<td>MAC, Emittance, Shaping</td>
<td>Ingmar</td>
<td>
Contents
* what do we expect to gain from emittance optimization for EuXFEL ( higher photon energies, needed for cw gun)
* brief intro into newly commissioned NEPAL laser and capabilities + commissioning experience.
* update on NEPAL laser design flaws and fix (can't get desired pulse durations, pulses are too short).
* update on design flaws of our beam-transport laser - photocathode at EuXFEL and plans what we want to do.
* update on new ideas to spatial shaping using DOEs I got at CLEO.
</td>
</tr>
<tr>
<td>
<timedatetime="2024-05-29">29 May 2024</time>
</td>
<td>LCLS Photoinjector lasers update</td>
<td>Joe Robinson</td>
<td>
* Begin with the talk
* Continue discussion on common ground and future joint projects that could benefit both labs
</td>
</tr>
<tr>
<td>
<timedatetime="2024-06-12">12 Jun 2024</time>
</td>
<td>Laser Safety</td>
<td>Ingmar Hartl, Eric Cunningham, others</td>
<td>
DESY
* Googles for OPCPA labs - hard to get ones with sufficient coverage. They are also very heavy and have very low transmission. VR headsets might be a path to go - is there a path to qualify them for laser safety?
* We started a laser safety protocol for FLASH seeding - can present what issues we had.
</td>
</tr>
<tr>
<td>
<timedatetime="2024-06-26">26 Jun 2024</time>
</td>
<td>Laser Safety II</td>
<td>Eric, Tino, Giovanni</td>
<td>
***DESY's Challenge:** Tino presents a case with a high-power, tunable OPCPA system where parasitic frequency mixing creates a broadband visible light hazard, exceeding the protection of available laser goggles.
***SLAC's Approach:** SLAC scientists describe their strategies for managing similar scenarios:
***Enclosures:** Encapsulating hazardous systems in boxes accessible only with tools.
***Administrative Controls:** Utilizing class 1 and class 4 operational modes with distinct procedures and goggles for different hazard levels.
***Job-Specific Analyses (JSAs):** Detailed documentation outlining hazards, controls, and procedures for non-standard work, requiring approval from the site laser safety officer.
***VR Goggles:** Both facilities discuss the potential of VR goggles to provide full-spectrum protection and enhance user experience, acknowledging the need for certification and approval from their respective laser safety officers. SLAC is actively pursuing testing and approval of VR goggles.
</td>
</tr>
<tr>
<td>
<timedatetime="2024-07-10">10 Jul 2024</time>
</td>
<td>DESY's technical design for seeding laser beamline</td>
<td>Ingmar, Massimo?</td>
<td>
would like to present the technical design of the seeding laser beamline and get feedback on validity of design.
Open questions:
* vacuum level
* how to measure wavefront distortions
* beam steering diagnostics
* diagnostic tables design
</td>
</tr>
<tr>
<td>
<timedatetime="2024-07-24">24 Jul 2024</time>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-08-14">14 Aug 2024</time>
</td>
<td>August Break</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-08-28">28 Aug 2024</time>
</td>
<td>August Break</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-09-11">11 Sep 2024</time>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-09-25">25 Sep 2024</time>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
<table>
<tr>
<th>SLAC suggestions / requests.</th>
<th>suggested by</th>
<th>speaker</th>
</tr>
<tr>
<td>MIR OPA development from DESY side</td>
<td>Joe</td>
<td>Rosen/Ilie ??</td>
</tr>
<tr>
<td>OIP Project Update: OPA Deep UV Extension for 200 - 240 nm pump coverage at MeV-UED (results by end of June...)</td>
<td>
</td>
<td>Patrick Kramer</td>
</tr>
<tr>
<td>SIP Project Update: High Rep Rate Transient Absorption setup</td>
<td>Overview of plans for source development and laser-only experiments in ASC lab space</td>
<td>
</td>
<td>Slava Leshchenko</td>
</tr>
<tr>
<td>
SIP Project Update: Resonant Antenna THz Streaking - electron beam control and time of arrival measurements at MeV-UED (project start delayed to \~October 2024)
<td>Quality control strategy for new / spare parts</td>
<td>Patrick</td>
<td>joint discussion (?)</td>
</tr>
<tr>
<td>Machine learning for lasers in accelerators / pump-probe experiments</td>
<td>Henrik / Patrick</td>
<td>Fuhao Ji (invite) ?</td>
</tr>
<tr>
<td>Compact MPC for spectral broadening - DESY</td>
<td>Huanyu</td>
<td>Arthur Schoenberg</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
| DESY Suggestions | Speaker |
|------------------|---------|
| Machine learning | Henrik Tuennermann |
| Tunable UV-Vis source (Spring or summer) | Yujiao |
| NEPAL (new photo-cathode lasers) | Christoph |
| Victor UV MPC | Victor |
| MOD2.3/ FL23 (March or later) | Skirmantas/Huseyin |
| Pulse shaping in MIR (Spring or summer) | Luca |
| MPC in XFEL | Joachim/Moritz ?? |
| Sync. system in DESY | Sebastian S. |
<table>
<tr>
<th>DESY suggestions / requests.</th>
<th>who made the suggestion</th>
</tr>
<tr>
<td>
Would like to discuss operational aspects. Suggest both groups give a short presentation
followed by a discussion.
E.g. LCLS now seems to appoint two experienced scientists per beamtime plus one person to learn
Topics to be discussed
* when is first contact with users established
* is there a joint meeting with X-ray instrument scientist and laser scientist with users ?
* what can go wrong? when to raise red flags? how to prevent failures of beamtimes ?
* what laser controls are given to users?
* how much staff is needed - e.g. how many experiments / scientist / year ?
</td>
<td>Ingmar</td>
</tr>
<tr>
<td>
Have a joint topic discussion on photocathode laser shaping for emittance optimization
would we benefit from joint experiments?
</td>
<td>Ingmar</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
Tiles operation in LCLC
* Enginering efforts
* Operation performance
</td>
<td>Huseyin</td>
</tr>
<tr>
<td>
Performance of new 1 µm amplifier systems:
* New Light Conversion Amplifier system
* Industrial version of the Amphos Amplifiers
</td>
<td>Huseyin</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
</tr>
</table>
<table>
<tr>
<td>
## **date**
</td>
<td>
## **title**
</td>
<td>
## **speaker**
</td>
<td>
## **Abstract**
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-01-24">24 Jan 2024</time>
</td>
<td>High Energy AOM</td>
<td>Yannick</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-02-07">07 Feb 2024</time>
</td>
<td>No meeting</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-02-21">21 Feb 2024</time>
</td>
<td>divided pulse MPC</td>
<td>Henrik S, Marcus, Nayla ??</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-03-06">06 Mar 2024</time>
</td>
<td>Summary of LaserNetUS beamtime</td>
<td>Mat Britton</td>
<td>Overview of 2um spectral broadening experiment progress and challenges at the iFAST facility, accessed via the LaserNetUS program.</td>
</tr>
<tr>
<td>
<timedatetime="2024-03-20">20 Mar 2024</time>
</td>
<td>General overview of FS-LA (LAC talk)</td>
<td>Ingmar</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-04-03">03 Apr 2024</time>
</td>
<td>No meeting</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-04-17">17 Apr 2024</time>
</td>
<td>High Rep Rate Mid-IR Project Plan and Results</td>
<td>Martin Cross</td>
<td>Experience with operating Carbide + Orpheus-ONE OPA and characterization of Mid-IR output pulses.</td>
</tr>
<tr>
<td>1 May 2024</td>
<td>No meeting</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-05-15">15 May 2024</time>
</td>
<td>MAC, Emittance, Shaping</td>
<td>Ingmar</td>
<td>
Contents
* what do we expect to gain from emittance optimization for EuXFEL ( higher photon energies, needed for cw gun)
* brief intro into newly commissioned NEPAL laser and capabilities + commissioning experience.
* update on NEPAL laser design flaws and fix (can't get desired pulse durations, pulses are too short).
* update on design flaws of our beam-transport laser - photocathode at EuXFEL and plans what we want to do.
* update on new ideas to spatial shaping using DOEs I got at CLEO.
</td>
</tr>
<tr>
<td>
<timedatetime="2024-05-29">29 May 2024</time>
</td>
<td>LCLS Photoinjector lasers update</td>
<td>Joe Robinson</td>
<td>
* Begin with the talk
* Continue discussion on common ground and future joint projects that could benefit both labs
</td>
</tr>
<tr>
<td>
<timedatetime="2024-06-12">12 Jun 2024</time>
</td>
<td>Laser Safety</td>
<td>Ingmar Hartl, Eric Cunningham, others</td>
<td>
DESY
* Googles for OPCPA labs - hard to get ones with sufficient coverage. They are also very heavy and have very low transmission. VR headsets might be a path to go - is there a path to qualify them for laser safety?
* We started a laser safety protocol for FLASH seeding - can present what issues we had.
</td>
</tr>
<tr>
<td>
<timedatetime="2024-06-26">26 Jun 2024</time>
</td>
<td>Laser Safety II</td>
<td>Eric, Tino, Giovanni</td>
<td>
***DESY's Challenge:** Tino presents a case with a high-power, tunable OPCPA system where parasitic frequency mixing creates a broadband visible light hazard, exceeding the protection of available laser goggles.
***SLAC's Approach:** SLAC scientists describe their strategies for managing similar scenarios:
***Enclosures:** Encapsulating hazardous systems in boxes accessible only with tools.
***Administrative Controls:** Utilizing class 1 and class 4 operational modes with distinct procedures and goggles for different hazard levels.
***Job-Specific Analyses (JSAs):** Detailed documentation outlining hazards, controls, and procedures for non-standard work, requiring approval from the site laser safety officer.
***VR Goggles:** Both facilities discuss the potential of VR goggles to provide full-spectrum protection and enhance user experience, acknowledging the need for certification and approval from their respective laser safety officers. SLAC is actively pursuing testing and approval of VR goggles.
</td>
</tr>
<tr>
<td>
<timedatetime="2024-07-10">10 Jul 2024</time>
</td>
<td>DESY's technical design for seeding laser beamline</td>
<td>Ingmar, Massimo?</td>
<td>
would like to present the technical design of the seeding laser beamline and get feedback on validity of design.
Open questions:
* vacuum level
* how to measure wavefront distortions
* beam steering diagnostics
* diagnostic tables design
</td>
</tr>
<tr>
<td>
<timedatetime="2024-07-24">24 Jul 2024</time>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-08-14">14 Aug 2024</time>
</td>
<td>Summer Break</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-08-28">28 Aug 2024</time>
</td>
<td>Summer Break</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-09-11">11 Sep 2024</time>
</td>
<td>Summer Break</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-09-25">25 Sep 2024</time>
</td>
<td>Summer Break</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
<timedatetime="2024-09-25">02 Oct 2024</time>
</td>
<td>1 um Laser Systems SLAC Perspective</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>16 Oct 2024</td>
<td>1 um Laser Systems DESY Perspective</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
<tr>
<td>
</td>
<td>
</td>
<td>
</td>
<td>
</td>
</tr>
</table>
<table>
<tr>
<th>SLAC suggestions / requests.</th>
<th>suggested by</th>
<th>speaker</th>
</tr>
<tr>
<td>MIR OPA development from DESY side</td>
<td>Joe</td>
<td>Rosen/Ilie ??</td>
</tr>
<tr>
<td>OIP Project Update: OPA Deep UV Extension for 200 - 240 nm pump coverage at MeV-UED (results by end of June...)</td>
<td>
</td>
<td>Patrick Kramer</td>
</tr>
<tr>
<td>SIP Project Update: High Rep Rate Transient Absorption setup</td>
<td>Overview of plans for source development and laser-only experiments in ASC lab space</td>
<td>
</td>
<td>Slava Leshchenko</td>
</tr>
<tr>
<td>
SIP Project Update: Resonant Antenna THz Streaking - electron beam control and time of arrival measurements at MeV-UED (project start delayed to \~October 2024)
