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| F-ESR-ARC.01 | The ESR lattice arc magnet structure shall contain an array of regular FODO cells |
| F-ESR-ARC.02 | The ESR lattice arc magnet structure shall consists of a quadrupole, a sextupole, a bending section, and a dipole corrector in each arc half-cell. |
| F-ESR-ARC.03 | The ESR lattice arc magnet structure shall accommodate slightly different average arc radii in the individual arcs by adjusting the drift spaces between individual elements in each FODO cell. |
| F-ESR-ARC.04 | The ESR beamline bending sections shall contain three individual dipole magnets, referred to as “super-bends”. |
| F-ESR-ARC.05 | The ESR super-bends shall generate additional synchrotron radiation damping to support a large beam-beam parameter of 0.1 and to create the required horizontal design emittance in the Master Parameter Table (MPT) when the ESR is operated at energies below 10 GeV. [Document: EIC-SEG-RSI-005] |
| F-ESR-ARC.06 | The polarity of the ESR center bending magnet shall be capable of being wired in reverse to control the beam emittance and to damp the beam. The polarity will be dictated by the beam energy. |
| F-ESR-ARC.07 | The ESR FODO cell shall operate with a horizontal and vertical betatron phase advance of 60 degrees per arc section at beam energies of 10 GeV and below. |
| F-ESR-ARC.08 | The ESR sextupole wiring scheme shall accommodate the required sextupole families needed per arc to create the 60 degree FODO cell phase advance at < 10 GeV. |
| F-ESR-ARC.09 | The ESR FODO cell shall operate with a horizontal and vertical betatron phase advance of 90 degrees per arc section to maintain the required horizontal beam emittance in the MPT at 18 GeV. [Document#:EIC-SEG-RSI-005] |
| F-ESR-ARC.11 | The ESR vertical emittance shall be controlled by appropriate beam orbit manipulations and horizontal-vertical cross coupling. |
| F-ESR-INST.01 | The ESR instrumentation system shall include dual-plane Beam Position Monitors (BPMs) adjacent to each vertically focusing quadrupole. Provisions shall be made in the vacuum chamber design to install additional dual-plane BPMs at the horizontally focusing quadrupoles, if needed. |
| F-ESR-INST.02 | The ESR BPMs shall have turn-by-turn orbit measurement capability based on a single, remotely selectable bunch out of the fully filled bunch train to enable injection optimization. |
| F-ESR-INST.03 | The ESR instrumentation system shall include a beam current monitor to measure average beam current. |
| F-ESR-INST.04 | The ESR instrumentation system shall include a system to measure individual bunch charges and bunch pattern. |
| F-ESR-INST.05 | The ESR instrumentation system shall include a system to measure transverse beam profiles. |
| F-ESR-INST.06 | The ESR instrumentation system shall include a system to measure longitudinal beam profiles. |
| F-ESR-INST.07 | The ESR longitudinal bunch profile monitor needs turn-by-turn capability based on a single bunch in the fully filled bunch train to allow timing and energy adjustment for injection optimization. |
| F-ESR-INST.08 | The ESR instrumentation system shall include system to measure H & V betatron tunes. |
| F-ESR-INST.09 | The ESR instrumentation system shall facilitate all required feedback systems (slow transverse, longitudinal and transverse bunch-by-bunch) |
| F-ESR-INST.10 | The ESR instrumentation system shall include beam loss monitor system with detectors located only at select regions of the ESR. |
| F-ESR-MAG.01 | The ESR magnets shall meet the requirements defined by the physics lattice. |
| F-ESR-MAG.02 | The ESR magnets shall have the required field quality to meet the operational needs. |
| F-ESR-MAG.03 | The “super-bends” in the ESR ARC sections shall consist of two long dipoles on either end of a short dipole. |
| F-ESR-MAG.04 | The good field region of the ESR dipoles shall extend over a horizontal range of at least 4 centimeters in the radial direction, for all operational beam energies from 5 to 18 GeV. This will take into account the orbit changes due to the reverse bends. |
| F-ESR-MAG.05 | All ESR quadrupoles shall be designed to facilitate beam based alignment. |
| F-ESR-MAG.06 | The maximum integrated field strength of the ESR FODO sextupoles needs to be sufficient to provide chromatic correction at all energies from 5 to 18 GeV with two low-beta interaction regions. |
| F-ESR-MAG.07 | The aperture of all ESR magnets shall be large enough to accommodate the ESR vacuum chamber. |
| F-ESR-MAG.08 | The ESR Shall have a conventional orbit corrector scheme, with single-plane correctors located at the respective quadrupoles. The strength of these correctors needs to be chosen to correct for any source of orbit distortion and should have enough margin for beam based diagnostic purposes, Harmonic Spin bumps and emittance generating bumps. |
| F-ESR-MAG.09 | All dipoles in the ESR, including those in IRs 6 and 8, shall be connected in series to a single main power supply. |
| F-ESR-MAG.10 | The ESR main arc quadrupoles shall be powered to accommodate the Lattice requirements having the appropriate number of circuits to power the focusing and defocusing quadrupoles in each sextant of the ESR. |
| F-ESR-MAG.11 | The ESR quadrupoles in the straight sections IR02, IR04, IR10 and IR12 and in the transition from the arc to the straight section structure shall be wired to provide the optimized betatron phase advance across each straight section, as required for dynamic aperture optimization. |
| F-ESR-MAG.12 | The ESR quadrupoles shall have provisions to vary individual strengths by approximately 1% for beam-based alignment purposes. |
| F-ESR-MAG.13 | The ESR sextupole power supply scheme shall be laid out such that the sextupole family structure can be configured for both the 60 and the 90 degree lattice along with a small number of individually powered sextupoles in the transition regions between arcs and straight sections with minimal effort, cost and minimizing any risk of error. |
| F-ESR-PS.01 | The ESR magnets shall be fed by a system of power supplies matched in voltage and maximum current to the specifications and requirements of the respective magnets |
| F-ESR-PS.02 | The ESR magnet power supplies shall be capable of providing the stability the ESR needs to operate |
| F-ESR-RF.01.01 | The ESR RF Systems shall be designed to fulfill all necessary parameters as set by the Master Parameter Table (MPT). [Document#: EIC-SEG-RSI-005] |
| F-ESR-RF.01.02 | The ESR RF System shall utilize superconductivity. |
| F-ESR-RF.03.01 | The ESR RF Systems shall conform to the ESR lattice. |
| F-ESR-RF.03.02 | The ESR RF Systems shall be installed in the straight sections of the ESR lattice within the existing RHIC tunnel in IR10. |
| F-ESR-RF.06.01 | The ESR RF Systems shall conform to the EIC Code of Record. |
| F-ESR-RF.06.02 | The ESR RF Systems within the tunnel shall operate within its yearly radiation exposure budget. |
| F-ESR-RF.06.04 | The ESR RF Systems shall have a minimum operating lifetime of 20 years |
| F-ESR-RF.06.05 | The ESR RF System shall be designed to minimize unscheduled downtime, maintenance time and repair time to achieve ESR operational availability. |
| F-ESR-RF.07.01.01 | The ESR Storage RF System shall be designed to accelerate electrons. |
| F-ESR-STRAIGHT.01 | The phase advance of each straight section shall be tunable in order to optimize the dynamic aperture of the ESR. |
| F-ESR-STRAIGHT.02 | The ESR straight sections IR02, IR04, IR10 and IR12 shall be based on FODO cells. |
| F-ESR-STRAIGHT.03 | Ther ESR shall have matching sections at the ends of each of the straight sections to compensate for the different FODO cell lengths with respect to the arc FODO cells imposed by geometric constraints. |
| F-ESR-VAC.01 | The ESR vacuum chamber shall provide sufficient horizontal and vertical aperture to accommodate; a +/-15 sigma beam, where the vertical RMS beam size is based on the emittance of a fully coupled beam, plus an additional 10 mm horizontal and 5 mm vertical margin to account for expected orbit errors. |
| F-ESR-VAC.02 | The dynamic pressure around the ESR shall be consistent with a beam gas lifetime of >10[hrs] with the design currents after an integrated beam current of 1000 [A.h]. |
| F-ESR-VAC.03 | There shall be no pressure bumps in the ESR exceeding (TBD)[Torr] |
| F-ESR-VAC.04 | The ESR 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. |
| F-ESR-VAC.05 | The ESR vacuum chamber material shall be chosen such that the SR power can be intercepted by the arc chambers and in addition good radiation shielding will be provided to prevent damage to other components. |
| F-ESR-VAC.06 | The impedance of the entire ESR vacuum system, including the interaction regions in IR06 and IR08, shall allow for the bunch intensities, beam currents, and bunch numbers contained in the Master Parameter Table (MPT). [Document#:EIC-SEG-RSI-005] |
| F-ESR.01 | The ESR lattice shall provide a minimum dynamic aperture of 10 sigma with respect to Gaussian electron beam distribution in all three dimensions (horizontal, vertical, and longitudinal) having a vertical emittance of half the horizontal design emittance. |
| F-ESR.04 | The ESR alignment requirements are established by dynamic aperture and polarization tracking. The ESR RMS alignment tolerances shall be such that all the beam parameter listed in the MPT can be satisfied. [Document#:EIC-SEG-RSI-005] |
| F-ESR.02 | The minimum dynamic aperture shall be achieved in two optics configurations (60 and 90 degrees betatron phase advance per FODO cell) at all operational beam energies in the Master Parameter Table (MPT), and with one and with two low-beta insertions. [Document#:EIC-SEG-RSI-005] |
| F-ESR.12 | The ESR Lattice shall contain provisions for correctors such as skew quadrupoles, Dipole correctors etc. as needed. |
CURRENT RECORD