Requirement Details
Electron Ion Collider
F-ESR-VAC.4
Requirement details, history, relationships and interfaces associated with requirement F-ESR-VAC.4
CURRENT RECORD- ARCHIVE RECORDS
- RELATIONSHIPS
- INTERFACES
| Record Date: 10/10/2024 14:48 | |||
| Identifier: | F-ESR-VAC.4 | WBS: | 6.04 |
| Date Modified: | TBD: | FALSE | |
| Status Date: | Status: | In Process | |
| Description: | The vacuum chamber and all its components shall be designed to withstand a total synchrotron radiation load of 10 MW, considering the uneven linear load particularly related to the super-bends. | ||
| Comments: | |||
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| Parents | |
| G-ESR.2 | The ESR shall have a depolarization time long enough to ensure an average polarization of 70%, assuming an injected polarization level of 80% and a bunch replacement rate of two bunches per second. |
| G-ESR.3 | The ESR shall provide electron bunches having the bunch parameters specified in [10]Â |
| Children | |
| P-ESR-INST-SLM.1 | The ESR shall have two synchrotron light monitors (SLM) and one X-ray pin hole monitor |
| P-ESR-INST-SLM.2 | The longitudinal bunch profile monitor shall have a turn-by-turn capability based on a single bunch in the fully filled bunch train. |
| P-ESR-INST-SLM.3 | TThe SLM systems shall measure the crabbing angle, longitudinal bunch parameters, H & V beam size and global coupling. |
| P-ESR-INST-SLM.4 | The SLM shall be able to measure a crabbing angle of 12.5 mrad with accuracy of 10 % |
| P-ESR-INST-SLM.5 | The SLM shall be able to measure the Longitudinal bunch parameters with accuracy of TBD - |
| P-ESR-INST-SLM.6 | The SLM shall be able to measure the H & V beam size with accuracy of H=?? V=?? units |
| P-ESR-INST-SLM.7 | The SLM shall be able to measure the Global coupling with accuracy of TBD - |
| P-ESR-INST-SLM.8 | One SLM port shall be located downstream of a dipole in an appropriate location in the ESR, exact location not critical. |
| P-ESR-INST-SLM.9 | The second SLM port shall be located in a complimentary location in the lattice to ensure all the necessary SLM measurements can be made. TBD - |
| P-ESR-INST-SLM.10 | The SLM light extraction port mirrors shall be good quality, having a surface finish better than 1/10 Lambda |
| P-ESR-INST-SLM.11 | The SLM light extraction port mirrors shall be water cooled to avoid image distortion. |
| P-ESR-INST-SLM.12 | There shall be an enclosed SL transport from the light extraction port to the SLM optical lab rooms. Length to be determined by the distance to optical lab room, should be minimized to reduce vibration problems. |
| P-ESR-INST-SLM.13 | The locations of the SLM optical lab rooms shall be TBD - |
| P-ESR-INST-SLM.14 | The double-slit interferometer method shall be used to measure transverse beam size |
| P-ESR-INST-SLM.15 | The standard transverse resolution of an SLM using visible light shall be ~60 um |
| P-ESR-INST-SLM.16 | The resolution using the double-slit method shall equal to 10 um |
| P-ESR-INST-SLM.17 | A streak camera shall be used to measure the bunch longitudinal profiles |
| P-ESR-INST-SLM.18 | A position sensitive photo-diode will provide photon beam centroid information which shall supplement the orbit stability measurements by the BPMs |
| P-ESR-INST-SLM.19 | A GigE CCD/CMOS camera, externally triggerable with exposure times ranging from 10 nsec to 5 sec, shall be used to image the visible radiation |
| P-ESR-INST-SLM.20 | A commercially available gated camera with gate width of <2 nsec (compared to a minimum bunch spacing of 10 nsec) shall be used to detect injection oscillations and for beam studies. |
| P-ESR-INST-SLM.21 | The location of the X-ray pinhole monitoring system shall be TBD |
| P-ESR-INST-SLM.22 | The target resolution of the X-ray pin hole monitoring system shall be ~ 5 um (or as best that can be achieved with the machine parameters and commercial equipment) 5 um |
| P-ESR-INST-SLM.23 | The X-ray pin hole monitor shall provide independent measurement of the energy spread and horizontal/vertical emittance. H=V=15.4 nm |
| P-ESR-INST-SLM.24 | The X-ray pinhole photon beamline shall be equipped with gated cameras that will be employed to provide high resolution turn-by-turn profile measurements |
| P-ESR-INST-SLM.25 | A pinhole assembly including tungsten slits shall provide sufficient resolution to precisely measure the beam size |
| P-ESR-INST-SLM.26 | Several different size pinholes sizes shall be incorporated to allow easy alignment and measurements at different beam currents and energies. |
| P-ESR-VAC.11 | The vacuum chamber shall absorb synchrotron radiation and carry away the power. 10 MW |
| P-ESR-VAC.12 | The vacuum chamber shall absorb synchrotron radiation and carry away the power. 10 MW |
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