HIAT2015 - List of Authors (Russo, A.D.)

Paper

Title

Page

Proposal to Increase the Extracted Beam Power from the LNS-INFN Superconducting Cyclotron

1

A. Calanna, L. Calabretta, G. Dagostino, D. Rifuggiato, A.D. Russo
INFN/LNS, Catania, Italy
A. Radovinsky
MIT/PSFC, Cambridge, Massachusetts, USA

The LNS Superconducting Cyclotron is an isochronous 3-sector compact machine with a wide mass-energy range of heavy ions: beams from protons to lead from 10 to 80 AMeV have been accelerated for the past 20 years. The extraction efficiency is low since a big percentage of the accelerated beam is lost on the electrostatic deflector. Recently, the demand of intense light ion beams, A<20, arose to study rare processes such as the nuclear matrix element in the double charge exchange reactions. Extraction by stripping has been envisaged to increase the maximum intensity by a factor 10-100, so to reach beam power values of few kWatt. Here the feasibility study of the new extraction for this range of ions is presented. The new beam dynamics features have been evaluated and, as a consequence, mechanical constraints have been considered too. It emerges that a new wide extraction channel fulfils the beam requirements. Therefore, a new cryostat has to replace the present one. A first feasibility study of the new cryostat has already accomplished by the PSFC of MIT. A more complete technical design report is under preparation to have the necessary elements to estimate costs and time schedule.

Slides MOA1C03 [6.174 MB]

TUA2C02

The Project SPES at Legnaro National Laboratories

M. Comunian, L. Bellan, L. Ferrari, A. Palmieri, A. Pisent
INFN/LNL, Legnaro (PD), Italy
L. Bellan
Univ. degli Studi di Padova, Padova, Italy
B.B. Chalykh
ITEP, Moscow, Russia
L. Ferrari
INFN- Sez. di Padova, Padova, Italy
A.D. Russo
INFN/LNS, Catania, Italy

At LNL INFN is under construction a Rare Isotope Facility called "Selective Production of Exotic Species" (SPES) based on a 35-70 MeV proton cyclotron, able to deliver two beams with a total current up to 0.75 mA, an ISOL fission target station and an existing ALPI superconducting accelerator as a post accelerator (up to 10 MeV/u for A/q=7). After an overview of the whole facility, the paper will cover notably: the high-resolution mass separator, the CW RFQ (80 MHz, 727 keV/u, internal bunching), the low energy transfer line and the post accelerator. The problems that have been solved during the design phase are partly common to all RIB facilities, like the necessity to have an high selectivity and high transmission for a beam of a very low intensity, plus the specific challenges related to the use of ALPI (with a reduced longitudinal acceptance) and related to the specific lay out. At present the design phase has been finalized, and the procurement procedure for the charge breeder, the transfer lines and the RFQ are in an advanced state.

Slides TUA2C02 [9.331 MB]

Paper	Title	Page
MOA1C03	Proposal to Increase the Extracted Beam Power from the LNS-INFN Superconducting Cyclotron	1
	A. Calanna, L. Calabretta, G. Dagostino, D. Rifuggiato, A.D. Russo INFN/LNS, Catania, Italy A. Radovinsky MIT/PSFC, Cambridge, Massachusetts, USA
	The LNS Superconducting Cyclotron is an isochronous 3-sector compact machine with a wide mass-energy range of heavy ions: beams from protons to lead from 10 to 80 AMeV have been accelerated for the past 20 years. The extraction efficiency is low since a big percentage of the accelerated beam is lost on the electrostatic deflector. Recently, the demand of intense light ion beams, A<20, arose to study rare processes such as the nuclear matrix element in the double charge exchange reactions. Extraction by stripping has been envisaged to increase the maximum intensity by a factor 10-100, so to reach beam power values of few kWatt. Here the feasibility study of the new extraction for this range of ions is presented. The new beam dynamics features have been evaluated and, as a consequence, mechanical constraints have been considered too. It emerges that a new wide extraction channel fulfils the beam requirements. Therefore, a new cryostat has to replace the present one. A first feasibility study of the new cryostat has already accomplished by the PSFC of MIT. A more complete technical design report is under preparation to have the necessary elements to estimate costs and time schedule.
	Slides MOA1C03 [6.174 MB]

TUA2C02	The Project SPES at Legnaro National Laboratories
	M. Comunian, L. Bellan, L. Ferrari, A. Palmieri, A. Pisent INFN/LNL, Legnaro (PD), Italy L. Bellan Univ. degli Studi di Padova, Padova, Italy B.B. Chalykh ITEP, Moscow, Russia L. Ferrari INFN- Sez. di Padova, Padova, Italy A.D. Russo INFN/LNS, Catania, Italy
	At LNL INFN is under construction a Rare Isotope Facility called "Selective Production of Exotic Species" (SPES) based on a 35-70 MeV proton cyclotron, able to deliver two beams with a total current up to 0.75 mA, an ISOL fission target station and an existing ALPI superconducting accelerator as a post accelerator (up to 10 MeV/u for A/q=7). After an overview of the whole facility, the paper will cover notably: the high-resolution mass separator, the CW RFQ (80 MHz, 727 keV/u, internal bunching), the low energy transfer line and the post accelerator. The problems that have been solved during the design phase are partly common to all RIB facilities, like the necessity to have an high selectivity and high transmission for a beam of a very low intensity, plus the specific challenges related to the use of ALPI (with a reduced longitudinal acceptance) and related to the specific lay out. At present the design phase has been finalized, and the procurement procedure for the charge breeder, the transfer lines and the RFQ are in an advanced state.
	Slides TUA2C02 [9.331 MB]