Requirement Details
Electron Ion Collider
F-HSR-VAC-BS.10
Requirement details, history, relationships and interfaces associated with requirement F-HSR-VAC-BS.10
CURRENT RECORD- ARCHIVE RECORDS
- RELATIONSHIPS
- INTERFACES
| Record Date: 12/06/2024 11:10 | |||
| Identifier: | F-HSR-VAC-BS.10 | WBS: | 6.05 |
| Date Modified: | TBD: | FALSE | |
| Status Date: | Status: | In Process | |
| Description: | The impedance of the screen design, including the screen with RF finger bellows at the cold mass interconnects shall not exceed the the global impedance budget which has been defined by approved by beam physics . | ||
| Comments: | |||
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| Parents | |
| G-HSR.22 | The HSR shall have a cryogenic system to cool and operate all elements which need cryogenic cooling and will, where possible utlise the existing RHIC cooling system. |
| Children | |
| P-HSR-VAC-ARC.3 | The Siberian snakes shall be equipped with new beam tubes. |
| P-HSR-VAC-ARC.4 | The new Siberian Snake beam tubes shall be Cu / aC coated. |
| P-HSR-VAC-SCREENS.1 | The inner layer of copper shall have a RRR>50 after installation. |
| P-HSR-VAC-SCREENS.2 | An amorphous Carbon coating shall be provided on the innermost surface of the beam screen to maintain electron secondary emission yield (SEY) below TBD at the arc CQS (after conditioning). [5.9] |
| P-HSR-VAC-SCREENS.3 | An AC coating shall be provided on the innermost surface of the beam screen to maintain a electron secondary emission yield (SEY) below TBD at the Arc dipoles. |
| P-HSR-VAC-SCREENS.4 | The overall beam screen impedance shall be approved by accelerator physics. |
| P-HSR-VAC-SCREENS.6 | The arc and insertion region beam screens will be designed to fit through a 68mm aperture. 68 mm |
| P-HSR-VAC-SCREENS.7 | The vertical beam aperture for the arc section beam screens shall be 47.4 mm. 47.4 mm |
| P-HSR-VAC-SCREENS.8 | The horizontal beam aperture for the arc section beam screens shall be 62.4 mm. 62.4 mm |
| P-HSR-VAC-SCREENS.9 | The center shift of the horizontal beam screen aperture shall not exceed 2.5 mm when installed in to the dipole due to the magnet sagitta. |
| P-HSR-VAC-SCREENS.10 | No more than 2 mm of stainless steel shall be exposed to the beam in order to accomodate the longitudinal weld seam. |
| P-HSR-VAC-SCREENS.11 | No more than 2 mm of stainless steel shall be exposed to the beam in order to accomodate the longitudinal weld seam. |
| P-HSR-VAC-SCREENS.12 | No more than 2 mm of stainless steel shall be exposed to the beam in order to accomodate the longitudinal weld seam. |
| P-HSR-VAC-SCREENS.13 | No more than 2 mm of stainless steel shall be exposed to the beam in order to accomodate the longitudinal weld seam. |
| P-HSR-VAC-SCREENS.14 | No more than 2 mm of stainless steel shall be exposed to the beam in order to accomodate the longitudinal weld seam. |
| P-HSR-VAC-SCREENS.15 | No more than 2 mm of stainless steel shall be exposed to the beam in order to accomodate the longitudinal weld seam. |
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