Run 2c Spectrometer Dipole Chamber Specifications

Friday 11 Jul 2025, 15:00 → 16:00 Europe/Zurich

6/R-012 - conference room (CERN)

AWAKE Run 2c – Spectrometer Design Chamber
Participants: Maria-Carmen, Fern, Collette, Nicolas, David, Marlene

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Discussion Summary

1. Window Design

• Two window options are planned:

  • Reuse an existing ~2 mm thick aluminum window (used in Run 1).

  • Design a second window for the high-energy side featuring a transparent ~2-inch diameter window (for OSR) surrounded by steel or another robust material.

• The window should be positioned outside the magnet yoke, especially if it needs to be replaceable.

2. Window Angle

• Final angle does not need to be fixed immediately unless it’s perpendicular, which could lead to integration issues on the high-energy side.

• Initial decision: Use 14 degrees for the first version.

  • Action: Joe and David to finalize the optimal angle, considering screen imaging constraints (e.g. 0° is not ideal for installing cameras near the beamline).

3. Chamber Reinforcements

• Evaluate where reinforcement ribs are needed and whether they can be placed outside the yoke.

• A mechanical simulation is necessary to confirm the structural integrity.

4. Chamber Diameter (Downstream of Plasma)

• Current upstream diameter is 72 mm; inside chamber diameter is 64 mm.

• Action: Marlene to assess whether a wider downstream diameter is feasible and report back to Nicolas.

5. Timeline

• Nicolas will circulate the first draft of the chamber design by early August.

15:00 → 15:20 Discussion

dipole chamber.pdf