“Ion optical calculations for MATS/NUSTAR within the framework of

program FRRS ”

Dmitriy Nesterenko,Saint-Petersburg State University

FRRS workshop, June 9-10, 2009

What is MATS?

Precision Measurements of very short-lived nuclei using an Advanced Trapping System for highly-

charged ions

MATS setup

Detectors: FT-ICR TOF-ICR Si(Li) electron

Precision trap:mass measure-Ments

Cooler trap:beam preparationSpectroscopy

EBIT:charge breeding

Features and advantages of MATS

using highly-charged ions (EBIT)

high speed of ion passing in the setup

Bm

qc

2

1

MATS will be an advances trapping system for mass spectrometry, laserspectroscopy, and in-trap decay spectroscopy with highly-charged, short-lived ions.

short-lived ions

resolving power

Design parameters:

Relative mass uncertainty 10-9

Accessable half-life 10 ms

Overall efficiency 1-5%

Maximum resolving power 108

My previous works

• Precision mass-spectrometry in the Penning traps

• Working on the SHIPTRAP setup

SHIPTRAP overview

Tasks

cryogenic gas cell

55° dipole magnet

RFQ cooler and buncherE ~ 100eV, ∆E ~ 1eV,longitudinal emittance ~ 5 eV ms transversal emittance ~ 10 π mm mrad (at 2.5 keV)

-45°/0°/+45°electrostatic switchyard

MATS

LaSpec

• choice of ion-optic elements• choice of arrangement configuration of elements• composition of a calculating program with codes SIMION/COSY• calculations with the program• choice of optimal conditions and parameters for transport of ion beam• composition of technical design for the ion-optical line of beam to the MATS setup

?~3 m

E ~ 50eV