ITS — beamNetUS

ITS - Argonne Photon Source Injector Test Stand

The Injector Test Stand (ITS) at the Advanced Photon Source (APS) is a highly versatile facility designed for advanced electron gun research, injector characterization, and beam diagnostics testing.

Facility bio

Name of Facility: Injector Test Stand

Laboratory: Argonne National Laboratory

Address: 9700 S. Cass Avenue, Argonne, IL 60439

Point of Contact: Yine Sun

Facility website:

Publications list:

    AWA Main Beamline Parameters
    
            Parameter
            Value
        
            Beam Type
            Electrons
        
            Beam Energy
            ~3 MeV (thermionic gun),

            ~6 MeV photocathode gun
        
            Repetition Rate
            < 30 Hz
        
            Bunch Charge
            few pC - 1 nC for a single bunch
        
            Beam spot size
            Of order 1 mm
        
            Energy Spread (delta p/p)
            1-10% (depending on gun and charge)

AWA Main Beamline Parameters
Parameter	Value
Beam Type	Electrons
Beam Energy	~3 MeV (thermionic gun), ~6 MeV photocathode gun
Repetition Rate	< 30 Hz
Bunch Charge	few pC - 1 nC for a single bunch
Beam spot size	Of order 1 mm
Energy Spread (delta p/p)	1-10% (depending on gun and charge)

Science specialists: ITS is routinely maintained and operated to support tests on RF gun for APS injector

APS/ASD has expertise in RF guns, beam dynamics, and can provide support for instrumentation and controls

Capabilities

Available 30 MW klystron at 2.856 GHz (w/ PFN modulator) with extensive waveguide distribution network

Versatile beamline comprising quadrupole, dipole and alpha magnets and beam diagnostics (charge, beam size, energy)

All component installed on modular Thompson-rail system

EPICS-based control system → remote run possible

Collocated to a 4-mJ IR laser (Pharos)
providing up to ~0.5-mJ UV pulses

Supports R&D on RF gun and cathodes:

Nominally thermionic gun producing 1-us bunch
train with period of 350 ps

Flexibility to test other RF guns (including
photocathode)

Low-energy compression w/ alpha magnets

Mostly independent from APS operation

Ideal Experiment

RF-gun characterization

Stable RF system paired with photocathode-laser for advanced R&D on RF guns

Examples include the commissioning of the APS-linac photogun photoinjector (LCLS-type).

Bring your own RF guns/RF structure or leverage ITS's in-house guns to test low-energy diagnostics or cathodes.

Low-energy compressed bunches

Alpha-magnet can provide compressed low-charge bunch or bunch trains supported experiment on sub-THz source (collaboration w/ RadiaBeam)

Use available THz capabilities or develop/test new capability for compact radiation sources (e.g., inverse Compton scattering) and medical applications