Our Facilities

Links to Facility Pages: 

ATF                      AWA           BELLA-HTT 
BELLA-HTU         HiRES         ITS@APS 

IOTA/FAST    FACET-II          LEA@APS

NLCTA            Tandem         UED(LEAD)

UITF

The table below lists the current facilities for an at-a-glance comparison of beam parameters and capabilities.

Note: these comparison tables are large and are not designed for mobile view.

Facility comparison tables below:

  1. Particle Beam Parameters

  2. Laser

  3. Test Stands

1. Particle Beam Parameters

Note that beam parameters at accelerator facilities are often correlated. For example, a higher bunch charge may mean a larger spot size. Not all parameters are therefore available at once. However these values will give you a good indication of what beam can be expected.

Beam parameters
UITF BELLA HTT BELLA HTU ATF AWA HiRES IOTA/FAST FACET-II NLCTA UED/LEAD ITS LEA Tandem
Beam Type Electrons: polarized and unpolarized Electrons Electrons Electrons Electrons Electrons Electrons (and protons) Electrons Electrons Electrons Electrons Electrons Ions H to Au
Beam Energy 200 keV and 8 MeV 1-500 MeV 10-500 MeV 15 - 75 MeV Main: 63 and 44 MeV
Optional: 25 and 6.5 MeV		 0.7 - 0.9 MeV 20-300 MeV (2.5 MeV protons) 10 GeV 75 MeV 3 MeV 3 or 6 MeV Up to 500 MeV 0.2 – 300 MeV (species dependent, up to 15 MV terminal voltage × charge state)
Repetition Rate CW at 1497 MHz and subharmonics 1 Hz (5 Hz possible) 1 Hz 1.5 Hz Main: 1-2 Hz
Maximum: 10 Hz is available for limited cases		 1 Hz - 1 MHz Bunch train 5 Hz
Nominally comprising 3000 bunches at 3 MHz 		10 Hz (range 1 - 30 Hz) 0.5 - 30 Hz 1 - 48 Hz Up to 30 Hz Up to 30 Hz Continuous
Bunch Charge Femto-Coulombs 10-100 pC 10-200 pC 0.02 - 2 nC 1 pC - 100 nC for single bunch
1 pC - 50 nC for a few GHz bunch train
1 pC - 3 nC for sub-THz bunch train		 Up to 16 pC 10 fC - 3.2 nC 2 nC (range 0.5 - 3 nC) 1 - 100 pC 20 - 200 fC ~ pC - 1 nC 1 pC - 1 nC N/A (DC beam)
Bunch Length 35 ps at keV
sub-ps at MeV		 1 - 10 μm 1 - 10 μm 0.2 - 20 ps 100 μm - 1.3 mm (depends on charge)
Shorter or longer bunches available below 5 nC (contact us)		 Minimum 90 μm 20 μm (range 1 - 100 μm) 75 - 400 μm 200 fs
Beam spot size Hundreds of microns to millimeters 1 - 5 μm at source
at 0.5 - 2 mrad divergence		 1 - 5 μm at source
at 0.5 - 5 mrad divergence		 Tens of microns to millimeters Below 10 μm to 8 mm (depends on charge) Minimum 50 μm 30 μm (range 5 - 200) 4000 μm (in air) 100 μm - millimeters Order 1 mm < 100 μm ~100 μm – few mm (tunable with optics)
Average Beam Current 1 mA at keV
100 nA at MeV
(10 to 100 microAmps possible with additional shielding)		 pA – μA (species and application dependent)
Peak Beam Current 100 A Up to 100 kA ~1 kA
Energy Spread Few % to few tens of % Few % to few tens of % 0.005% - 5% (depends on charge) 1 - 10% Below 10^-3 10^-4-10^-3
Other Up to 90% polarization Transverse and longitudinal profile options (contact us)
Independent 15 MeV beamline also available		 Fast ion changes

2. Laser capabilities

Note that the lasers listed are those available through the BeamNetUS program and may not represent all lasers at the facility.

Laser capabilities comparison
UITF BELLA HTT ATF AWA HiRES IOTA/FAST FACET-II NLCTA UED/LEAD ITS LEA Tandem
Laser Type 800 nm PW & 800 nm TW 9.2 micron TW & 800 nm TW 800 nm TW, 393 nm, 262 nm 800 nm for pump-probe 10 TW Ti:Sapph 800 nm
Pulse Energy 250 mJ (10 - 350 mJ range)
Pulse Length 50 fs (50 - 600 fs range)

3. RF testing capabilities

RF Testing Capabilities
UITF BELLA HTT ATF AWA HiRES IOTA/FAST FACET-II NLCTA UED/LEAD ITS LEA Tandem
L-Band 5 RF klystrons
S-band 1 Klystron 1 Klystron
THz Beam-driven RF
X-band Beam-driven RF 4 Klystrons
K-band Beam-driven RF

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