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## **Abstract** ## **Abstract**
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<time datetime="2024-01-24">24 Jan 2024</time> <time datetime="2024-01-24">24 Jan 2024</time>
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<td>High Energy AOM</td> <td>High Energy AOM</td>
<td>Yannick</td> <td>Yannick</td>
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<time datetime="2024-02-07">07 Feb 2024</time> <time datetime="2024-02-07">07 Feb 2024</time>
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<td>No meeting</td> <td>No meeting</td>
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<time datetime="2024-02-21">21 Feb 2024</time> <time datetime="2024-02-21">21 Feb 2024</time>
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<td>divided pulse MPC</td> <td>divided pulse MPC</td>
<td>Henrik S, Marcus, Nayla ??</td> <td>Henrik S, Marcus, Nayla ??</td>
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<time datetime="2024-03-06">06 Mar 2024</time> <time datetime="2024-03-06">06 Mar 2024</time>
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<td>Summary of LaserNetUS beamtime</td> <td>Summary of LaserNetUS beamtime</td>
<td>Mat Britton</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> <td>Overview of 2um spectral broadening experiment progress and challenges at the iFAST facility, accessed via the LaserNetUS program.</td>
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<time datetime="2024-03-20">20 Mar 2024</time> <time datetime="2024-03-20">20 Mar 2024</time>
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<td>General overview of FS-LA (LAC talk)</td> <td>General overview of FS-LA (LAC talk)</td>
<td>Ingmar</td> <td>Ingmar</td>
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<time datetime="2024-04-03">03 Apr 2024</time> <time datetime="2024-04-03">03 Apr 2024</time>
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<td>No meeting</td> <td>No meeting</td>
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<time datetime="2024-04-17">17 Apr 2024</time> <time datetime="2024-04-17">17 Apr 2024</time>
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<td>High Rep Rate Mid-IR Project Plan and Results</td> <td>High Rep Rate Mid-IR Project Plan and Results</td>
<td>Martin Cross</td> <td>Martin Cross</td>
<td>Experience with operating Carbide + Orpheus-ONE OPA and characterization of Mid-IR output pulses.</td> <td>Experience with operating Carbide + Orpheus-ONE OPA and characterization of Mid-IR output pulses.</td>
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<td>1 May 2024</td> <td>1 May 2024</td>
<td>No meeting</td> <td>No meeting</td>
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<time datetime="2024-05-15">15 May 2024</time> <time datetime="2024-05-15">15 May 2024</time>
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<td>MAC, Emittance, Shaping</td> <td>MAC, Emittance, Shaping</td>
<td>Ingmar</td> <td>Ingmar</td>
<td> <td>
Contents Contents
* what do we expect to gain from emittance optimization for EuXFEL ( higher photon energies, needed for cw gun) * 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. * 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 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 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. * update on new ideas to spatial shaping using DOEs I got at CLEO.
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<time datetime="2024-05-29">29 May 2024</time> <time datetime="2024-05-29">29 May 2024</time>
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<td>LCLS Photoinjector lasers update</td> <td>LCLS Photoinjector lasers update</td>
<td>Joe Robinson</td> <td>Joe Robinson</td>
<td> <td>
* Begin with the talk * Begin with the talk
* Continue discussion on common ground and future joint projects that could benefit both labs * Continue discussion on common ground and future joint projects that could benefit both labs
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<time datetime="2024-06-12">12 Jun 2024</time> <time datetime="2024-06-12">12 Jun 2024</time>
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<td>Laser Safety</td> <td>Laser Safety</td>
<td>Ingmar Hartl, Eric Cunningham, others</td> <td>Ingmar Hartl, Eric Cunningham, others</td>
<td> <td>
DESY 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? * 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. * We started a laser safety protocol for FLASH seeding - can present what issues we had.
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<time datetime="2024-06-26">26 Jun 2024</time> <time datetime="2024-06-26">26 Jun 2024</time>
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<td>Laser Safety II</td> <td>Laser Safety II</td>
<td>Eric, Tino, Giovanni</td> <td>Eric, Tino, Giovanni</td>
<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. * **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: * **SLAC's Approach:** SLAC scientists describe their strategies for managing similar scenarios:
* **Enclosures:** Encapsulating hazardous systems in boxes accessible only with tools. * **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. * **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. * **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. * **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.
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<time datetime="2024-07-10">10 Jul 2024</time> <time datetime="2024-07-10">10 Jul 2024</time>
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<td>DESY's technical design for seeding laser beamline</td> <td>DESY's technical design for seeding laser beamline</td>
<td>Ingmar, Massimo?</td> <td>Ingmar, Massimo?</td>
<td> <td>
would like to present the technical design of the seeding laser beamline and get feedback on validity of design. would like to present the technical design of the seeding laser beamline and get feedback on validity of design.
Open questions: Open questions:
* vacuum level * vacuum level
* how to measure wavefront distortions * how to measure wavefront distortions
* beam steering diagnostics * beam steering diagnostics
* diagnostic tables design * diagnostic tables design
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<time datetime="2024-07-24">24 Jul 2024</time> <time datetime="2024-07-24">24 Jul 2024</time>
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<time datetime="2024-08-14">14 Aug 2024</time> <time datetime="2024-08-14">14 Aug 2024</time>
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<td>August Break</td> <td>Summer Break</td>
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<time datetime="2024-08-28">28 Aug 2024</time> <time datetime="2024-08-28">28 Aug 2024</time>
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<td>August Break</td> <td>Summer Break</td>
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<time datetime="2024-09-11">11 Sep 2024</time> <time datetime="2024-09-11">11 Sep 2024</time>
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<td> <td>Summer Break</td>
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<td> <time datetime="2024-09-25">25 Sep 2024</time>
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<time datetime="2024-09-25">25 Sep 2024</time> <td>Summer Break</td>
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</tr> <time datetime="2024-09-25">02 Oct 2024</time>
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<td> <td>1 um Laser Systems SLAC Perspective</td>
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<td> <td>16 Oct 2024</td>
<td>1 um Laser Systems DESY Perspective</td>
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</td> <th>SLAC suggestions / requests.</th>
<td> <th>suggested by</th>
<th>speaker</th>
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</table> <td>MIR OPA development from DESY side</td>
<td>Joe</td>
<table> <td>Rosen/Ilie ??</td>
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<th>SLAC suggestions / requests.</th> <tr>
<th>suggested by</th> <td>OIP Project Update: OPA Deep UV Extension for 200 - 240 nm pump coverage at MeV-UED (results by end of June...)</td>
<th>speaker</th> <td>
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<td>MIR OPA development from DESY side</td> <td>Patrick Kramer</td>
<td>Joe</td> </tr>
<td>Rosen/Ilie ??</td> <tr>
</tr> <td>SIP Project Update: High Rep Rate Transient Absorption setup</td>
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<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>Matt Bain</td>
</td> </tr>
<td>Patrick Kramer</td> <tr>
</tr> <td>LDRD Project Update: Superconductor coherent control</td>
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<td>SIP Project Update: High Rep Rate Transient Absorption setup</td>
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<td>Giacomo Coslovich or Choongwon Seo</td>
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<td>Matt Bain</td> <tr>
</tr> <td>Overview of plans for source development and laser-only experiments in ASC lab space</td>
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<td>LDRD Project Update: Superconductor coherent control</td>
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<td>Slava Leshchenko</td>
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<td>Giacomo Coslovich or Choongwon Seo</td> <tr>
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<td>Overview of plans for source development and laser-only experiments in ASC lab space</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)
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<td>Slava Leshchenko</td> </td>
</tr> <td>Meredith Henstridge</td>
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SIP Project Update: Resonant Antenna THz Streaking - electron beam control and time of arrival measurements at MeV-UED (project start delayed to \~October 2024)
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<td>Meredith Henstridge</td> <td>
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Integrated diagnostic tower design: Tutti-Frutti (TF)
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<td> * iterations on design
* lessons learned
</td> * which diagnostics most valuable in ops so far?
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Integrated diagnostic tower design: Tutti-Frutti (TF) <td>Giacomo or ?</td>
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* iterations on design <tr>
* lessons learned <td>Quality control strategy for new / spare parts</td>
* which diagnostics most valuable in ops so far? <td>Patrick</td>
</td> <td>joint discussion (?)</td>
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</td> <td>Machine learning for lasers in accelerators / pump-probe experiments</td>
<td>Giacomo or ?</td> <td>Henrik / Patrick</td>
</tr> <td>Fuhao Ji (invite) ?</td>
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<td>Quality control strategy for new / spare parts</td> <tr>
<td>Patrick</td> <td>Compact MPC for spectral broadening - DESY</td>
<td>joint discussion (?)</td> <td>Huanyu</td>
</tr> <td>Arthur Schoenberg</td>
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<td>Machine learning for lasers in accelerators / pump-probe experiments</td> <tr>
<td>Henrik / Patrick</td> <td>
<td>Fuhao Ji (invite) ?</td>
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<td>Compact MPC for spectral broadening - DESY</td>
<td>Huanyu</td> </td>
<td>Arthur Schoenberg</td> <td>
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<td> | DESY Suggestions | Speaker |
|------------------|---------|
</td> | Machine learning | Henrik Tuennermann |
<td> | Tunable UV-Vis source (Spring or summer) | Yujiao |
| NEPAL (new photo-cathode lasers) | Christoph |
</td> | Victor UV MPC | Victor |
</tr> | MOD2.3/ FL23 (March or later) | Skirmantas/Huseyin |
</table> | Pulse shaping in MIR (Spring or summer) | Luca |
| MPC in XFEL | Joachim/Moritz ?? |
| DESY Suggestions | Speaker | | Sync. system in DESY | Sebastian S. |
|------------------|---------|
| Machine learning | Henrik Tuennermann | <table>
| Tunable UV-Vis source (Spring or summer) | Yujiao | <tr>
| NEPAL (new photo-cathode lasers) | Christoph | <th>DESY suggestions / requests.</th>
| Victor UV MPC | Victor | <th>who made the suggestion</th>
| MOD2.3/ FL23 (March or later) | Skirmantas/Huseyin | </tr>
| Pulse shaping in MIR (Spring or summer) | Luca | <tr>
| MPC in XFEL | Joachim/Moritz ?? | <td>
| Sync. system in DESY | Sebastian S. |
Would like to discuss operational aspects. Suggest both groups give a short presentation
<table>
<tr> followed by a discussion.
<th>DESY suggestions / requests.</th>
<th>who made the suggestion</th> E.g. LCLS now seems to appoint two experienced scientists per beamtime plus one person to learn
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<tr> Topics to be discussed
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* when is first contact with users established
Would like to discuss operational aspects. Suggest both groups give a short presentation * 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 ?
followed by a discussion. * what laser controls are given to users?
* how much staff is needed - e.g. how many experiments / scientist / year ?
E.g. LCLS now seems to appoint two experienced scientists per beamtime plus one person to learn </td>
<td>Ingmar</td>
Topics to be discussed </tr>
<tr>
* when is first contact with users established <td>
* 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 ? Have a joint topic discussion on photocathode laser shaping for emittance optimization
* what laser controls are given to users?
* how much staff is needed - e.g. how many experiments / scientist / year ? would we benefit from joint experiments?
</td> </td>
<td>Ingmar</td> <td>Ingmar</td>
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Have a joint topic discussion on photocathode laser shaping for emittance optimization </td>
<td>
would we benefit from joint experiments?
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<td>Ingmar</td> </tr>
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<td>
Tiles operation in LCLC
</td>
<td> * Enginering efforts
* Operation performance
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</tr> <td>Huseyin</td>
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Tiles operation in LCLC
Performance of new 1 µm amplifier systems:
* Enginering efforts
* Operation performance * New Light Conversion Amplifier system
</td> * Industrial version of the Amphos Amplifiers
<td>Huseyin</td> </td>
</tr> <td>Huseyin</td>
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Performance of new 1 µm amplifier systems:
</td>
* New Light Conversion Amplifier system <td>
* Industrial version of the Amphos Amplifiers
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<td>Huseyin</td> </tr>
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