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Electron Injector System Requirements

General, functional and performance requirements associated with the Electron Injector Systems of the Electron Ion Collider.

Name
WBS
Description
Updated
Status
TBD
EIN : Electron Injection System Punctional Requirements

G-EIN.01
The EIS shall provide an electron beam having sufficient polarization as required by the ESR to meet the operational modes defined in the Master Parameter Table (MPT). [Document: EIC-SEG-RSI-005]
02/09/2026
Approved
FALSE

G-EIN.02
The EIS shall provide an electron beam having sufficient energy to meet the ESR beam requirements as defined in the MPT. [Document: EIC-SEG-RSI-005]
02/09/2026
Approved
FALSE

G-EIN.03
The EIS shall provide an electron beam with the RMS bunch momentum spread at extraction which meet the ESR beam requirements as defined in the MPT. [Document: EIC-SEG-RSI-005]
02/09/2026
Approved
FALSE

G-EIN.04
The EIS pre-injector shall provide an electron beam to the ESR having a horizontal beam emittance which is compatible with operation of the ESR.
02/09/2026
Approved
FALSE

G-EIN.05
The EIS pre-injector shall provide an electron beam to the ESR having a vertical beam emittance which is compatible with operation of the ESR.
02/09/2026
Approved
FALSE

G-EIN.06
The EIS shall inject into the ESR at a rate of 1 (Hz).
02/09/2026
Approved
FALSE

G-EIN.07
The EIS shall inject one bunch into the ESR whilst being able to provide 1 bunch per injection cycle.
02/09/2026
Approved
FALSE

G-EIN.08
The EIS shall provide an electron beam to the ESR having RMS bunch length at extraction to meet beam requirements as defined in the MPT. [Document: EIC-SEG-RSI-005]
02/09/2026
Approved
FALSE

G-EIN.09
The EIS shall provide an electron beam to the ESR having the bunch charge at extraction to meet the beam requirements as defined in the MPT. [Document: EIC-SEG-RSI-005]
02/09/2026
Approved
FALSE

G-EIN.10
The EIS bunch replacement process shall deliver polarized replacement bunches capable of creating all the ESR polarization patterns needed to meet the physics goals.
02/09/2026
Approved
FALSE

G-EIN.11
The EIS bunch replacement process shall deliver polarized replacement bunches capable of maintaining the ESR polarization decay rates.
02/09/2026
Approved
FALSE

G-EIN.12
The ESR bunch replacement pattern shall accommodate the RF cogging limitations incurred by any beam transfer between RCS and ESR.
02/09/2026
Approved
FALSE

F-EIN.01
The Electron Injector (EIN) shall create a spin polarized beam of electrons and inject them into the Electron Storage Ring (ESR).
09/21/2026
Approved
FALSE

F-EIN.02
The spin polarized electron beam at the extraction of the ESR injection kicker shall meet all the parameters defined in the Master Parameter Table (MPT). [Document#: EIC-SEG-RSI-005]
09/21/2026
Approved
FALSE

F-EIN.03
The EIN shall include all accelerator components, machine and personnel protection devices, associated control hardware and software, and supporting infrastructure and utilities from the electron source to the ESR injection kicker and swap-out beam dump.
09/21/2026
Approved
FALSE

F-EIN.04
The EIN shall consist of five sections:
09/21/2026
Approved
FALSE

F-EIN.04.01
1. Pre-Injector
09/21/2026
Approved
FALSE

F-EIN.04.02
2. Linac-To-RCS (LTR) Transfer Line (TL)
09/21/2026
Approved
FALSE

F-EIN.04.03
3. Beam Accumulator Ring (BAR)
09/21/2026
Approved
FALSE

F-EIN.04.04
4. Rapid Cycling Synchrotron (RCS)
09/21/2026
Approved
FALSE

F-EIN.04.05
5. RCS-To-ESR (RTE) TL and ESR Injection and Swap-Out System
09/21/2026
Approved
FALSE

F-EIN.05.01
EIN radiation safety system shall provide sufficient shielding to protect both hardware and personnel from radiation exposure with maximum operation current.
10/12/2026
Approved
FALSE

F-EIN.05.02
EIN radiation safety system shall prevent personnel from entering hazardous areas (accelerator tunnels) while the machine is operating.
10/12/2026
Approved
FALSE

F-EIN.05.03
EIN radiation safety system shall shut down the beam automatically if a door, hatch, or other access point is opened.
10/12/2026
Approved
FALSE

F-EIN.05.04
EIN radiation safety system shall provide manual emergency stops and automated fault responses to place the accelerator in a safe state.
10/12/2026
Approved
FALSE

EIN-BAR : EIN Beam Accumulation Ring

EIN-BAR-GRST : EIN BAR Girders and Stands

EIN-BAR-INST : EIN BAR Instrumentation

EIN-BAR-INST-BPM

EIN-BAR-INST-BPM-ELEC : Beam Accumulator Ring Beam Profile Monitor Electronic Instrumentation

EIN-BAR-INST-BPM-PU : Beam Accumulator Ring Beam Profile Monitor Pick-Up Instrumentation

EIN-BAR-MAG : EIN BAR Magnet Systems

EIN-BAR-MAG-D:150

EIN-BAR-MAG-D:20

EIN-BAR-MAG-D:80

EIN-BAR-MAG-Q:30

EIN-BAR-MAG-SX:20

EIN-BAR-MAG-TH:10

EIN-BAR-MAG-TH:22

EIN-BAR-MAG-TH:30

EIN-BAR-MAG-TH:40

EIN-BAR-MAG-TV:10

EIN-BAR-MAG-TV:22

EIN-BAR-MAG-TV:30

EIN-BAR-MAG-TV:40

EIN-BAR-PPD : EIN BAR Pulsed Power Devices

EIN-BAR-PPD-MAG : EIN BAR PPD Magnets

EIN-BAR-PPD-PS : EIN BAR PPD Power Supplies

EIN-BAR-PS : EIN BAR Power Supplies

EIN-BAR-RF : EIN BAR RF Systems

EIN-BAR-RF-HPRF

EIN-BAR-RF-SRF

EIN-BAR-VAC : EIN BAR Vacuum Systems

EIN-ESS : EIN Electron Source System

EIN-ESS-GRST : EIN ESS Girders and Stands

EIN-ESS-GUN : Pre-Injector Gun

EIN-ESS-INST : Pre-Injector Gun Instrumentation

EIN-ESS-INST-BPM

EIN-ESS-INST-BPM-ELEC

EIN-ESS-INST-BPM-PU

EIN-ESS-INST-EM

EIN-ESS-INST-FC

EIN-ESS-INST-MP

EIN-ESS-LZR : Pre-Injector Gun Laser

F-EIN-ESS-LZR.01
The EIN pre-injector electron gun laser shall provide laser beam for electron gun generates polarized electron beam
10/12/2026
Approved
FALSE

F-EIN-ESS-LZR.02
The EIN pre-injector electron gun laser shall perpdicular illuminate the cathode.
10/12/2026
Approved
FALSE

F-EIN-ESS-LZR.03
The EIN pre-injector electron gun laser shall have instrumentation capable of measuring the position and profile of the laser beam on the cathode.
10/12/2026
Approved
FALSE

F-EIN-ESS-LZR.04
The EIN pre-injector electron gun laser beam shall reach the cathode without clip along the laser path.
10/12/2026
Approved
FALSE

F-EIN-ESS-LZR.05
The EIC Pre-injector laser shall be able to tune the wavelength, position, power , pulse length and beam size.
10/12/2026
Approved
FALSE

F-EIN-ESS-LZR.06
The EIN pre-injector electron gun laser port windows shall not disturb the laser spin direction
10/12/2026
Approved
FALSE

F-EIN-ESS-LZR.07
The EIN pre-injector electron gun laser window shall be coated film to reduce reflection.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.01.01
The laser system shall deliver a bunch charge greater than 1.2 (nC) in nominal operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.01.02
The laser system shall deliver a bunch charge greater than 1.7 (nC) in high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.02.01
The laser system shall produce a bunch length of 300 (ps) in nominal operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.02.02
The laser system shall produce a bunch length of 450 (ps) in high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.03
The laser system shall assume a photocathode quantum efficiency of 0.1 (%) for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.04
The laser system shall operate at a wavelength within 760 (nm) to 790 (nm) for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.05.01
The laser system shall provide pulse energy greater than 1907.692308 (nj) in nominal operation at the cathode.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.05.02
The laser system shall provide pulse energy greater than 2270.564103 (nj) in high-charge operation at the cathode.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.06
The laser system shall operate at a repetition rate of 30 (Hz) for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.07
The laser system shall provide polarization greater than 99.99 (%) for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.08
The laser system shall support a random spin pattern for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.09
The laser system shall support a spin change rate of 1 (Hz) for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.10
The laser system shall produce a transverse beam radius of 5 (mm) on the cathode for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.11
The laser system shall produce a transverse gaussian sigma radius of 5 (mm) on the cathode for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.12
The laser system shall produce a uniform longitudinal distribution for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.13.01
The laser system shall limit longitudinal rising time to less than 30 (ps) in nominal operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.13.02
The laser system shall limit longitudinal rising time to less than 45 (ps) in high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.14.01
The laser system shall limit longitudinal jitter, peak-to-peak, to less than 10 (ps) in nominal operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.14.02
The laser system shall limit longitudinal jitter, peak-to-peak, to less than 14 (ps) in high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.15.01
The laser system shall limit longitudinal jitter, RMS, to less than 3 (ps) in nominal operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.15.02
The laser system shall limit longitudinal jitter, RMS, to less than 4.2 (ps) in high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.16
The laser system shall limit pulse-to-pulse energy jitter to less than 4 (%) for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.17
The laser system shall provide an on/off contrast better than -100 (dB) for both nominal and high-charge operation.
10/12/2026
Approved
FALSE

P-EIN-ESS-LZR.18
The engineer shall include appropriate design margin to account for power loss, jitter, and other relevant uncertainties, since no margin is included in the tabulated values.
10/12/2026
Approved
FALSE

EIN-ESS-MAG : Pre-Injector Gun Magnet

EIN-ESS-MAG-ROT : EIN ESS Spin Rotator Magnet

F-EIN-ESS-MAG-ROT.01
The EIN pre-injector LET spin rotator section between the dipole chamber and the bunching section shall have two Wien filters used to rotate the spin direction from longitudinal to vertical.
10/12/2026
Approved
FALSE

F-EIN-ESS-MAG-ROT.02
The EIN pre-injector LET spin rotator section shall have focusing magnets between two Wien filters to maintain the beam envelop.
10/12/2026
Approved
FALSE

F-EIN-ESS-MAG-ROT.03
The EIN pre-injector LET spin rotator section shall have profile monitors, beam position monitors (BPMs) placed at before, in between and after two Wien filters.
10/12/2026
Approved
FALSE

P-EIN-ESS-MAG-ROT.01.01
6.04.03.09.05
The spin rotator shall be a Wien Filter.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.02
6.04.03.09.05
The spin rotator shall operate with the function of producing a magnetic and electric field to rotate the electron spin by 45 degree from a single Wien filter. Two Wien filters will rotate the spin direction from longitudinal to vertical.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.03
6.04.03.09.05
The magnet shall have a design life of 30 years under nominal EIC operating conditions.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.04
6.04.03.09.05
The spin rotator shall have the following minimum clearances for the spin rotator assembly:
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.04.01
6.04.03.09.05
The spin rotator shall have a clearance envelope of +/- 0.3 m in the X direction.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.04.02
6.04.03.09.05
The spin rotator shall have a clearance envelope of 2.3 m in the Y direction.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.04.03
6.04.03.09.05
The spin rotator shall have a clearance envelope of less than 2 m in the Z direction.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.05
6.04.03.09.05
The spin rotator shall have a beam loss inside the wien filter of less than 0.10 (%).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.06
6.04.03.09.05
The spin rotator installation and alignment shall meet the following tolerances:
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.06.01
6.04.03.09.05
The spin rotator install center and install alignment shall be within a translational value of +/- 300 (um).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.06.02
6.04.03.09.05
The spin rotator install center and alignment shall be within a rotational alignment value of +/- 1.7 (mrad).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.01.07
6.04.03.09.05
The spin rotator relative alignment between the spin rotator electrode field and magnetic field shall be less than or equal to 50 (um) translationally.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02
6.04.03.09.05
The spin rotator magnet shall have the following:
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02.01
6.04.03.09.05
The magnet length shall be equal to 492 (mm) +/- 0.1 (mm).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02.02
6.04.03.09.05
The magnet dipole gap shall be equal to 224 (mm) +/- 0.1 (mm)
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02.03
6.04.03.09.05
The magnet integrated magnet field (Bx) shall be 2.845x10^-3 (T . m).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02.04
6.04.03.09.05
The magnet good field aperture, dAx, shall be less than or equal to 5 (cm).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02.05
6.04.03.09.05
The magnet good field aperture, dAy, shall be less than or equal to 5 (cm).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02.06
6.04.03.09.05
The transverse magnetic-field uniformity within a radius of 2.5 (cm) from the spin rotator center shall be no greater than 0.1%.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02.07
6.04.03.09.05
The magnet shall have a coil temperature stability of +/- 2 degrees Celcius.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.02.08
6.04.03.09.05
The magnet shall have a separate bipolar power supply for degaussing, which will be needed during initial beam commissioning, restarting a new run and change in the beam parameters.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03
6.04.03.09.05
The spin rotator electrode shall have the following:
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03.01
6.04.03.09.05
The electrode length shall be 45.84 cm.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03.02
6.04.03.09.05
The electrode shall be designed with an electrode gap of 7 (cm).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03.03
6.04.03.09.05
The electrode shall be designed with a feedthrough bias of 50.5 (kV).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03.04
6.04.03.09.05
The electrode shall be designed with an alignment tolerance with respect to the magnet maximum gradient of +/- 50 (um).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03.05
6.04.03.09.05
The electrode shall have an electric field maximum gradient of less than or equal to 6 (MV/m).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03.06.01
6.04.03.09.05
The electrode good field aperture, dAx, shall be less than or equal to 5 (cm).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03.06.02
6.04.03.09.05
The electrode good field aperture, dAy, shall be less than or equal to 5 (cm).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.03.07
6.04.03.09.05
The transverse magnetic-field uniformity within a radius of 2.5 (cm) from the spin rotator center shall be no greater than 0.1%.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.04
6.04.03.09.05
The spin rotator vacuum shall have the following:
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.04.01
6.04.03.09.05
The spin rotator vacuum shall have a baseline pressure less than or equal to 5x10^-10 (Torr).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.04.02
6.04.03.09.05
The spin rotator beam pipe shall have a flux clamp permeability of greater than 1500.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.04.02.01
6.04.03.09.05
The spin rotator flux clamp shall have a thickness of 25 mm.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.04.02.02
6.04.03.09.05
The spin rotator shall have 2 sets of flux clamps.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-MAG-ROT.04.03
6.04.03.09.05
The spin rotator beam pipe shall have an internal diameter of 72 (mm).
10/12/2026
Reviewed
FALSE

EIN-ESS-PPD : EIN ESS Pulsed Power Devices

EIN-ESS-PPD-MAG : EIN ESS PPD Magnets

EIN-ESS-PPD-PS : EIN ESS PPD Power Supplies

EIN-ESS-PS : EIN ESS Power Supplies

EIN-ESS-PS-ROTB : EIN ESS Spin Rotator Magnet Power Supply

P-EIN-ESS-PS-ROTB.01
6.04.03.09.05
The power supply shall provide power to the spin rotator magnet.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTB.02
6.04.03.09.05
The spin rotator magnet power supply shall meet all requirements to deliver the magnet operational parameters defined in the technical magnet documentation. [Document#: EIC-SEG-RSI-TBD]
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTB.03
6.04.03.09.05
The spin rotator magnet power supply shall provide a current of greater than or equal to 8.8 Amps DC.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTB.04
6.04.03.09.05
The spin rotator magnet power supply shall maintain a long-term stability of maximum operating current (1 second to 8 hours) of less than or equal to 110 ppm pk-pk of full scale current.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTB.05
6.04.03.09.05
The spin rotator magnet power supply shall provide a minimal current setpoint resolution of 18 (Bit).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTB.06
6.04.03.09.05
The spin rotator magnet power supply setpoint and all of the PS analog readbacks shall be synchronized to the line to reduce noise.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTB.07
6.04.03.09.05
The spin rotator magnet power supply shall limit current ripple (RMS) of maximum operating current to 25 ppm RMS of full-scale current.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTB.08
6.04.03.09.05
The rack mounted power supply and its controls rack shall be designed to be sustained at an operational ambient temperature range of 75 +/-3 (Degrees Fahrenheit).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTB.09
6.04.03.09.05
The spin rotator magnet power supply shall maintain a repeatability of less than or equal to 110 ppm pk-pk of full-scale current.
10/12/2026
Reviewed
FALSE

EIN-ESS-PS-ROTE : EIN ESS Spin Rotator Electrode Power Supply

P-EIN-ESS-PS-ROTE.01
6.04.03.09.05
The power supply shall provide power to the spin rotator electrode.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTE.02
6.04.03.09.05
The spin rotator electrode power supply shall meet all requirements to deliver the magnet operational parameters defined in the technical magnet documentation. [Document#: EIC-SEG-RSI-TBD]
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTE.03
6.04.03.09.05
The spin rotator electrode power supply shall provide a voltage of 50.5 KVDC.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTE.04
6.04.03.09.05
The spin rotator electrode power supply shall maintain a long-term stability of voltage (1 second to 8 hours) of less than or equal to 110 ppm pk-pk of full-scale voltage.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTE.05
6.04.03.09.05
The spin rotator electrode power supply setpoint and all of the PS analog readbacks shall be synchronized to the line to reduce noise.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTE.06
6.04.03.09.05
The spin rotator electrode power supply shall limit voltage ripple (RMS) to 25 ppm RMS of full-scale voltage.
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTE.07
6.04.03.09.05
The rack mounted power supply and its controls rack shall be designed to be sustained at an operational ambient temperature range of 75 +/-3 (Degrees Fahrenheit).
10/12/2026
Reviewed
FALSE

P-EIN-ESS-PS-ROTE.08
6.04.03.09.05
The spin rotator electrode power supply shall maintain a repeatability of less than or equal to 110 ppm pk-pk of full-scale voltage .
10/12/2026
Reviewed
FALSE

EIN-ESS-VAC : EIN ESS Vacuum Systems

EIN-INST : EIN Instrumentation System

EIN-LTR : EIN Linac-to-RCS

EIN-LTR-GRST : EIN LTR Girders and Stands

EIN-LTR-INST : EIN LTR Instrumentation

EIN-LTR-MAG : EIN LTR Magnet Systems

EIN-LTR-PS : EIN LTR Power Supplies

EIN-LTR-VAC : EIN LTR Vacuum Systems

EIN-MAG : EIN Magnet System

EIN-MPS

EIN-MPS-EIN

EIN-MPS-EIN-COLL : ESR Injection Beam Dump

EIN-PRJ : EIN Pre-Injector

F-EIN-PRJ.01
The EIN pre-injector shall consist of three sub-systems:
09/21/2026
Approved
FALSE

F-EIN-PRJ.01.01
1. An electron gun sub system which includes a diagnostic line.
09/21/2026
Approved
FALSE

F-EIN-PRJ.01.02
2. Low energy transport subsystem which includes the spin rotator section and beam bunching section.
09/21/2026
Approved
FALSE

F-EIN-PRJ.01.03
3.A Linac sub system which includes a pre-accelerating section, a spin diagnostic beamline and an Sband linac section.
09/21/2026
Approved
FALSE

F-EIN-PRJ.02
The EIN pre-injector shall be able to create a vertical spin polarized electron bunch and accelerate it to 750 MeV ready for transport to the LTR TL.
09/21/2026
Approved
FALSE

F-EIN-PRJ.03
The EIN pre-injector shall create bunches which meet the requirements defined in the MPT. [Document#: EIC-SEG-RSI-005]
09/21/2026
Approved
FALSE

F-EIN-PRJ.04.01
The EIN pre-injector shall have a Low Energy Transfer Line (LET) including spin rotator section and a bunching section.
10/12/2026
Approved
FALSE

F-EIN-PRJ.04.02
The EIN pre-injector LET shall have a spin rotator section to rotating spin direction from longitudinal to vertical.
10/12/2026
Approved
FALSE

F-EIN-PRJ.04.03
The EIN pre-injector LET bunching section shall contain a plunging transverse profile monitor, a bunch charge monitor, and beam position monitors to characterize and control the bunches.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.01
The EIN LTR transfer line shall be able to transport the spin reoriented beam from the end of the linac to either the BAR or directly to the RCS.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.02
The LTR transfer line will maintain the spin direction of the beam along the entire transfer line.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.03
The LTR transfer line shall have several FODO quadrupoles to control the beta function along the transfer line.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.04
The EIN LTR Transfer Line shall have beam position monitors for orbit control, transverse profile monitors, and bunch charge monitors to measure and control the beam.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.05.01
The EIN LTR transfer line shall include a bypass transport line capable of transferring the beam past the BAR (bypassing it) and into the RCS for all the operating energies and conditions defined in the MPT. [Document#: EIC-SEG-RSI-005]
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.05.02
The EIN LTR transfer line bypass injection system shall have vertically spin polarized electron bunches preserved and transferred into the RCS.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.05.03
The EIN LTR transfer line bypass injection system shall be able to inject up to thirty bunches per 1 (Hz) cycle.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.05.04
The EIN LTR transfer line bypass injection system shall ensure the bunch emittance matches the requirements of the RCS RF system and such, to avoid collective instabilities and to stay within the off-momentum aperture.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.05.05
The EIN LTR transfer line bypass injection system shall have a kicker with a rise and fall time that is less than a single revolution of the RCS.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.05.06
The EIN LTR transfer line bypass injection system shall have a septum capable of deflecting the incoming electron beam into the RCS and shielding the circulating beam already in the RCS.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.05.07
The EIN LTR transfer line bypass injection system shall have a kicker with a peak power necessary to generate a kick to inject the bunch into the RCS.
10/12/2026
Approved
FALSE

F-EIN-PRJ.05.05.08
The EIN LTR transfer line bypass injection system shall have a kicker and septum able to repeat at 1 (Hz).
10/12/2026
Approved
FALSE

EIN-PRJ-GRST : EIN Pre-Injector Girders and Stands

EIN-PRJ-INST : Pre-Injector Low Energy Transfer Line Instrumentation

EIN-PRJ-MAG : Pre-Injector Low Energy Transfer Line Magnet

F-EIN-PRJ-MAG.01
The EIN pre-injector LET bunching section shall have a series of solenoid magnets placed between the Wien filters up to the beam energy of 10 MeV.
10/12/2026
Approved
FALSE

F-EIN-PRJ-MAG.02
The EIN pre-injector LET bunching section solenoid shall maintain the spin orientation of the electron beam without altering its vertical direction.
10/12/2026
Approved
FALSE

F-EIN-PRJ-MAG.03
The EIN pre-injector LET bunching section shall have correctors correct beam orbit.
10/12/2026
Approved
FALSE

F-EIN-PRJ-MAG.04
The EIN pre-injector LET bunching section shall have two solenoids with space about sufficient to kick beam out at certain angle for spin measurement between the two 1.3 GHz cavities.
10/12/2026
Approved
FALSE

F-EIN-PRJ-MAG.05
The EIN pre-injector LET bunching section shall have two solenoids with space about sufficient to kick beam out for energy spread measurement, bunch charge and beam dump between the two 1.3 GHz cavities.
10/12/2026
Approved
FALSE

F-EIN-PRJ-MAG.06
The Pre-injector LINAC shall have a triplet quadrupole installed control the beam beta function and dispersion.
10/12/2026
Approved
FALSE

F-EIN-PRJ-MAG.07
The Pre-injector LINAC shall have XY steering coils installed between each Pre-Injector SBAND cavity to control the beam orbit.
10/12/2026
Approved
FALSE

F-EIN-PRJ-MAG.08
The EIN LTR Transfer Line shall have a pair of bending dipoles to be able to bend the beam from the LTR into the BAR section or transport the beam into the bypass transport line.
10/12/2026
Approved
FALSE

F-EIN-PRJ-MAG.09
The LTR Transfer Line shall have quadrupoles to suppress the horizontal and vertical beta functions along the transfer line to levels consistent with those required at the RCS injection kicker.
10/12/2026
Approved
FALSE

EIN-PRJ-PS : EIN Pre-Injector Power Supplies

EIN-PRJ-RF : Pre-Injector Low Energy Transfer Line Buncher

EIN-PRJ-VAC : Electron Injection System Pre-Injector Vacuum

EIN-PS : EIN Power Supply System

EIN-RCS : EIN Rapid Cycling Synchrotron

F-EIN-RCS.01
The EIN RCS shall be capable of accepting bunches from the BAR or directly from the LTR bypass.
09/21/2026
Approved
FALSE

F-EIN-RCS.02
The EIN RCS after bunch injection shall be able to accelerate the single bunch to the final desired energy defined in the MPT. [Document#: EIC-SEG-RSI-005]
09/21/2026
Approved
FALSE

F-EIN-RCS.03
The EIN RCS shall accelerate to the top possible energy in a time interval consistent with the parameters defined in the MPT. [Document#: EIC-SEG-RSI-005]
09/21/2026
Approved
FALSE

F-EIN-RCS.04
The EIN RCS shall be capable of kicking the accelerated bunches into the RTE transfer line to the ESR.
09/21/2026
Approved
FALSE

F-EIN-RCS.05
The EIN RCS shall match the emittance to the ESR emittance acceptance range.
09/21/2026
Approved
FALSE

F-EIN-RCS.06
The EIN RCS shall have a racetrack design with arc Focusing-Defocusing (FODO) cells with a bending radius of 92.48 (m) and straight sections long enough to accommodate eight RF cryomodules and enough room for extraction.
09/21/2026
Approved
FALSE

F-EIN-RCS.07
The EIN RCS lattice shall provide a maximum dynamic aperture of 4 sigma with respect to a gaussian electron beam distribution in transverse dimensions.
09/21/2026
Approved
FALSE

F-EIN-RCS.08
The EIN RCS off-momentum aperture shall reach 1.0% dp/p.
09/21/2026
Approved
FALSE

F-EIN-RCS.09
The EIN RCS quadrupoles and sextupoles shall be aligned to with 0.2 mm RMS or better with a 2 sigma cutoff relative to magnets within +/- 50 m
09/21/2026
Approved
FALSE

F-EIN-RCS.10
The EIN RCS alignment of the dipole field with respect to the vertical axis shall be less than +/- 0.2 mrad rms with 2 sigma cut-off.
09/21/2026
Approved
FALSE

F-EIN-RCS.11
The EIN RCS shall reach an availability consistent with the overall availability of the entire EIC defined in the MPT. [Document#:EIC-SEG-RSI-005]
09/21/2026
Approved
FALSE

F-EIN-RCS.12
The EIN RCS shall transmit polarization with a 95% efficiency.
09/21/2026
Approved
FALSE

EIN-RCS-GRST : EIN RCS Girders and Stands

EIN-RCS-INST : EIN RCS Instrumentation

F-EIN-RCS-INST.01
The EIN RCS instrumentation system shall contain a beam position monitor system consisting of dual-plane beam position monitors adjacent to each quadrupole.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.02
The EIN RCS shall have beam position monitors in the injection region with turn-by-turn orbit measurement capability based on a single, remotely selectable bunch out of the fully filled bunch train to enable injection optimization.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.03
The EIN RCS instrumentation system shall include a beam current monitor to measure average beam current.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.04
The EIN RCS instrumentation system shall include a system to measure individual bunch charges and bunch pattern.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.05
The EIN RCS instrumentation system shall include a system to measure transverse beam profiles.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.06
The EIN RCS instrumentation system shall include a system to measure longitudinal bunch profiles.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.07
The EIN RCS instrumentation system shall contain a betatron and synchrotron tune monitors.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.08
The EIN RCS longitudinal bunch profile monitor shall have turn-by-turn capability based on a single bunch in the fully filled bunch train to allow timing and energy adjustment for injection optimization.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.09
The EIN RCS shall contain a beam-based alignment system.
09/21/2026
Approved
FALSE

F-EIN-RCS-INST.10
The EIN RCS shall contain a beam loss monitor system.
09/21/2026
Approved
FALSE

EIN-RCS-INST-BPM

EIN-RCS-INST-BPM-ELEC

EIN-RCS-INST-BPM-PU

EIN-RCS-INST-PM

EIN-RCS-INST-SLM

EIN-RCS-INST-TM

EIN-RCS-MAG : EIN RCS Magnet Systems

F-EIN-RCS-MAG.01
The EIN RCS lattice shall have dipole correctors at every quadrupole.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.02
The EIN RCS magnets shall meet the requirements defined by the physics lattice.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.03
The EIN RCS magnets shall have the required field quality to meet the error tolerances required by dynamic aperture.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.04
The EIN RCS magnets aperture shall be large enough to accommodate the vacuum chamber.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.05
The EIN RCS dipole shall be an RBEND C-shaped dipole.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.06
The EIN RCS window-frame dipole corrector magnets shall be placed adjacent to most of the quadrupoles.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.07
The EIN RCS correctors shall be capable of adjusting the beam orbit.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.08
The EIN RCS window-frame dipole corrector magnets shall provide both horizontal and vertical dipole fields to correct the beam orbit in both transverse planes.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.09
The EIN RCS quadrupole strength needs to be capable of being changed independently by small amounts for beam-based alignment purposes.
09/21/2026
Approved
FALSE

F-EIN-RCS-MAG.10
The EIN RCS FODO sextupoles maximum integrated field strength shall correct chromaticity to within 1 unit in both planes.
09/21/2026
Approved
FALSE

EIN-RCS-MAG-COR

EIN-RCS-MAG-COR-TH:25

EIN-RCS-MAG-COR-TH:40

EIN-RCS-MAG-COR-TH:80

EIN-RCS-MAG-COR-TV:25

EIN-RCS-MAG-COR-TV:40

EIN-RCS-MAG-COR-TV:80

EIN-RCS-MAG-DIPOLE

EIN-RCS-MAG-DIPOLE-D:181

EIN-RCS-MAG-QUAD

EIN-RCS-MAG-QUAD-Q:23

EIN-RCS-MAG-QUAD-Q:47

EIN-RCS-MAG-QUAD-Q:71

EIN-RCS-MAG-SXT

EIN-RCS-MAG-SXT-S:20

EIN-RCS-PPD : EIN RCS Pulsed Power Devices

EIN-RCS-PS : EIN RCS Power Supplies

EIN-RCS-RF : EIN RCS RF Systems

EIN-RCS-RF-HPRF

EIN-RCS-RF-SRF

EIN-RCS-VAC : EIN RCS Vacuum Systems

EIN-RF

F-EIN-RF.07.01
The EIN Pre-injector LINAC shall be able to accelerate all electron bunches up to the energy's defined in the MPT. [Document#: EIC-SEG-RSI-005]
10/12/2026
Approved
FALSE

F-EIN-RF.07.02
The EIN Pre-injector Lband LINAC section shall have one 1.3 GHz taper cavity.
10/12/2026
Approved
FALSE

F-EIN-RF.07.03
The EIN Pre-injector Lband LINAC section shall have one 1.3 GHz beta=1 cavity.
10/12/2026
Approved
FALSE

F-EIN-RF.07.04
The EIN Pre-injector LINAC shall have 14 SBAND LINAC cavities.
10/12/2026
Approved
FALSE

F-EIN-RF.07.05
The EIN Pre-injector LINAC shall have a steering magnet between each S-band LINAC section.
10/12/2026
Approved
FALSE

F-EIN-RF.07.06
The EIN Pre-injector LINAC sections shall have klystrons to power S-band Linac structures.
10/12/2026
Approved
FALSE

F-EIN-RF.07.07
The EIN Pre-injector LINAC shall use RF pulse compression to increase Klystron’s peak power
10/12/2026
Approved
FALSE

F-EIN-RF.07.08
The EIN Pre-injector LINAC structure shall have 84 cells, input power coupler cell and output power coupler cell
10/12/2026
Approved
FALSE

F-EIN-RF.07.09
The EIN Pre-injector LINAC section RF waveguide split shall have an RF load to absorb reflection power
10/12/2026
Approved
FALSE

F-EIN-RF.07.10
The EIN Pre-injector LINAC section shall have BPMs installed in between each LINAC units.
10/12/2026
Approved
FALSE

F-EIN-RF.07.11
The EIN Pre-injector LINAC section shall have bunch charge measurements performed at multiple locations.
10/12/2026
Approved
FALSE

F-EIN-RF.07.12
The EIN Pre-injector LINAC section shall have a plunging YAG/OTR transverse profile monitor at multiple locations to measure the beam profile.
10/12/2026
Approved
FALSE

F-EIN-RF.07.13
The EIN Pre-injector Lband LINAC shall powered by Klystron/modulator RF power system
10/12/2026
Approved
FALSE

F-EIN-RF.07.14
The EIN Pre-injector LINAC section SBAND input power shall achieve required accelerating gradients
10/12/2026
Approved
FALSE

F-EIN-RF.07.15
The EIN Pre-injector LINAC section SBAND cavities shall be constant gradient cavities.
10/12/2026
Approved
FALSE

F-EIN-RF.07.16
The EIN Pre-injector LINAC section SBAND shall have an accelerating Gradient meet the requirement.
10/12/2026
Approved
FALSE

F-EIN-RF.07.17
The EIN Pre-injector LINAC section SBAND shall have an RF load after the output coupler.
10/12/2026
Approved
FALSE

EIN-RTE : EIN RCS-to-Electron Storage Ring

EIN-RTE-PPD : Electron Storage Ring Injection System (WBS 6.02.02)

F-EIN-RTE-PPD.01
6.02.02
The ESR injection system shall inject a single bunch onto the closed orbit.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.02
6.02.02
The ESR injection system shall be installed in IR4.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.03
6.02.02
The ESR injection point shall be upstream of IP4, where the ESR is installed along the outer tunnel wall.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.04
6.02.02
The ESR injection system shall be capable of injecting one bunch per second.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.05
6.02.02
The ESR injection system kickers shall deflect the incoming beam in the horizontal direction.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.06
6.02.02
The ESR injection kicker pulse form shall be such that fewer than 10 stored bunches receive a kick that leads to betatron oscillations of these bunches that correspond to less than 0.1 RMS transverse beam sizes.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.07
6.02.02
The ESR injection system shall upon injection of a new bunch into a given bucket extract the spent stored bunch by the same kicker pulse.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.08
6.02.02
The ESR injection system shall deflect replaced (extracted) bunches towards a dedicated beam dump.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.09
6.02.02
The ESR injection system beam dump for replaced bunches (replacement dump) shall be internal to the beam pipe.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.10
6.02.02
The ESR injection system replacement dump shall be capable of absorbing one bunch per second, with the bunch parameters listed in the Master Parameter Table. [Document#: EIC-SEG-RSI-005]
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.11
6.02.02
The ESR injection system shall be designed with a 50 percent safety margin for absorption of spent bunches into the replacement dump.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.12
6.02.02
The ESR injection system shall have radiation shielding provided around the replacement dump.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.13
6.02.02
There shall be no slow injection/extraction bump in the ESR.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.14
6.02.02
Incoming bunches from the RCS shall have their transverse emittances matched to the equilibrium emittances in the ESR within 10 percent.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.15
6.02.02
The energy, bunch length, and momentum spread of the incoming bunches from the RCS shall be matched to the ESR bucket.
10/12/2026
Approved
FALSE

F-EIN-RTE-PPD.16
6.02.02
The layout of the ESR injection and extraction beam lines shall minimize the required kick angle by taking advantage of the split yokes of the APS quadrupoles in the area.
10/12/2026
Approved
FALSE

EIN-RTE-PPD-MAG : ESR Injection Kicker

EIN-RTE-PPD-PS

EIN-RTE-GRST : EIN RTE Girders and Stands

EIN-RTE-INST : EIN RTE Instrumentation

EIN-RTE-INST-BPM

EIN-RTE-INST-BPM-ELEC

EIN-RTE-INST-BPM-PU

EIN-RTE-INST-CM

EIN-RTE-MAG : EIN RTE Magnet Systems

EIN-RTE-PS : EIN RTE Power Supplies

EIN-RTE-VAC : EIN RTE Vacuum System

EIN-VAC : Electron Injection System Vacuum