Laboratori Nazionali di Legnaro

National Laboratory in Legnaro

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Laboratori Nazionali di Legnaro

Introduction to LNL accelerator machines

 

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AN 2000

The second accelerator installed in Legnaro is of the electrostatic type like the CN but has a terminal voltage of 2 MV. It is therefore smaller: the only experimental room houses the accelerator (which incorporates the source), the beam channels and all the measurement points.

 

Tandem-XTU

In the mid-eighties, LNLs made a first leap in performance, in terms of energy of the accelerated ions, with the acquisition of a third electrostatic accelerator, of the Tandem-XTU type, from the company High Voltage Engineering (based in the United States ). The Tandem, much larger than the CN-7 MV and AN2000 accelerators, is based on a slightly different operating principle. The high voltage terminal (which in the case of LNL exceeds 14.5 MV of maximum electrostatic voltage) is positioned in the center and on the axis of a horizontal tank, in turn filled with insulation gas (SF6 sulfur hexafluoride) to a pressure of 7 atm.

 

ALPI

At the LNL, the ALPI linear accelerator (acronym for "Linear Accelerator For Ions") (Fig. 10, left) is located in a shed adjacent to that of the XTU tandem, and receives the beam through a transport line of dipoles and quadrupolar magnetic lenses and bunchers. It was designed entirely by LNL technologists and researchers and went into operation in the first half of the 1990s.

 

PIAVE

The PIAVE linac is called an injector because, unlike the Tandem, it can only operate jointly with ALPI, which receives the beam. It is located in the same building as ALPI, adjacent to the beam transport lines, to and from the experimental rooms closest to the Tandem. It too, like ALPI, is based on superconducting accelerating cavities and was designed entirely by LNL. It has been operational since 2004.

 

SPES

SPES-α foresees the acquisition, installation and commissioning of a high performance cyclotron with high output current (~ 0.7 mA) and high energy (up to 70 MeV), together with the related infrastructure for the accelerator and experimental stations

 

 

 

Surface treatments group (G. Keppel)

 

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Group that takes care of ESS-DTL and IFMIF-RFQ

 

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INFN-LNL Cryogenics Group

 

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LNL - Cyclotron Group

 

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LNL - Group Controls and RF

 

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LNL - ISOL Group

 

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