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UIL-2-433

COMMERTIAL LINEAR ION ACCELERATOR

Commertial linear ion accelerator UIL-2-433

The ion linac UIL-2-433 is used as main part of complex for the activation express analysis of the element composition of materials. Either secondary (characteristic gamma or X-ray) radiation of substance, irradiated with H± ions, or radiation due to neutron activation of the target (Li37(p,n) Be47- reaction) are analysed.

Output energy of H± ions is 2 MeV, maximum average current is 1 mA, maximum average beam power is 2 kW.

The express analysis complex besides linac consists of an interaction chamber, a fast-acting measuring system and a data processing system. Secondary radiation type determinates a sort of output devices.

Main parameters 
Accelerated particles H+ or H-
Operating frequency, MHz 433
Output energy, MeV 2
Pulse current, mA 20 - 30
Output emittance (norm) 10-6
Current pulse length, µsec 100
RF generator type endotron COLESO
Pulse power, kW 500
Average power, kW 8
Pulse repetition rate, Hz 100
Total weight, t 2
Consumed power (3x380/220 V, 50 Hz), kW 20

POSSIBLE APPLICATIONS


Modification of the UIL-2-433 can be used as an injector for 70..250 MeV medical proton synchrotron.

The UIL-2-433 is usable as the first stage of the linac for a PET-system. The PET-system needs 11C, 13N, 15O, 18F isotopes. These isotopes are produced with 8..12 MeV proton (or H-) linac. Injection system produces H± or H- ions accelerated up to 2 MeV in RFQ linac and up to 8..12 MeV in a drift tube linac: other than the Alvarez type one. RF alternate phase focusing (APF) is used in a drift tube linac. Special change of synchronous particle phase in accelerating gaps allows to achieve practical stability in radial and phase beam motion simultaneously. Focusing permanent magnets are not used in drift tubes. This is an advantage of the APF structure too. Length of the APF cavity is 2..2.4 m. Operating frequency is 433 MHz. Bore radius can be varied from 5 to 10 mm. The maximum gradient of the accelerating field is 180 kV/cm.

 
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