1. Ralph Aßmann (DESY) 2nd collaboration week November 24th, 2017, Lisbon
WP1 EuPRAXIA Project
Ralph Aßmann (DESY)
2nd collaboration week
November 24th, 2017, Lisbon

2. WP1
Excellent place, good discussions, good review, new insights, good progress...
Thanks to everybody for the great work.
Also discussed next step forward:
Classifying solutions
New post-CDR and pre-construction phase
Lot’s of technical discussions...
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

3. R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

4. R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

5. EuPRAXIA Baseline(s) Limited number of baseline solutions (1 – 3)
Choices of most promising approaches (balance technical readiness, performance, cost)
Installed and operational from day 1
High technical readiness level: reasonable extension from today (e.g. limited repetition rate)
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

6. Evaluation Criteria (to be completed)
Criterion
Weight
Score
Technical Readiness Level 5 years
Technical Readiness Level 10 years
Technical judgement criteria: 5 GeV performance
FEL Performance 5 GeV based on start to end simulations
Flexibility and tuning capabilities
FEL Performance 1 GeV based on start to end simulations
Cost
Size
Innovation and Technical Disruptiveness
New parameter reach beyond conventional accelerators
Future technology/performance reach and impact
Upgradeability
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

7. Development Path(s) Included
Developments paths envisaged during EuPRAXIA operation (e.g. towards high repeti-tion rate)
Options that we consider required for the scientific/technical goals of EuPRAXIA and therefore should be included into construction funding (costing extra money)
Options that we get for free and do not slow down overall implementation work: all necessary hardware is part of baseline (e.g. hybrid solutions) and teams available to work on this in EuPRAXIA
Lower technical readiness level: not available for day 1 but required for EuPRAXIA goals
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

8. Backup and Risk Mitigating Options
Options that were not selected as most promising for the EuPRAXIA baseline but that offer interesting features
Options that we get for free and that would slow down overall implementation work: major beamtime needed which is not available, teams and institutes interested in this will be fully busy on other topics
Might be required for risk mitigation in case that a backup option proves not feasible for whatever reason
Includes both high and low technical readiness level
Not included into construction funding: in case needed would be funded through budget shifts
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

9. Who Will Decide? Input from WP members and leaders
WP leaders prepare proposal(s)
EuPRAXIA management will sort and assemble proposals
EuPRAXIA Steering Committee will take the overall working decisions
as long as not affecting overall goals and scope
EuPRAXIA Collaboration Board will take decisions affecting scope and overall goals
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

10. New Post-CDR Phase
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

11. Technical: Tolerances and Alignment I
Overall Accelerator Reference line
Offset Dx
Rotation Dx’
Each element on the accelerator line has assigned alignment errors like defined above, in x, y, z
RF cavities, plasma cells, mirrors, magnets, diagnostics, ...
Alignment campaigns minimize alignment errors
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

12. Technical: Tolerances and Alignment II
Offset Dx
Overall Accelerator Reference line
Offset Dx
Rotation Dx’
Laser
Rotation Dx’
Same for laser...
Offsets and angles must be defined with respect to the overall reference line.
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

13. Technical: Tolerances and Alignment III
Offset Dx
Overall Accelerator Reference line
Offset Dx
Beam
Rotation Dx’
Laser
Rotation Dx’
Same for laser...
Offsets and angles must be defined with respect to the overall reference line.
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review

14. Thank You
R. Aßmann (DESY) - EuPRAXIA Mid-Term Review