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Developments for the HITRAP cooler trap and mass measurements around A = 96 at SHIPTRAP

Abstract

The HITRAP (Highly charged Ions Trap) facility is currently being set up and commissioned at GSI in Darmstadt. It will provide bunches of 10{sup 5} heavy highly-charged ions, for example hydrogen-like uranium (U{sup 91+}), to high-precision atomic physics experiments. The ions are produced by the GSI accelerator complex and decelerated to 4 MeV/u in the Experimental Storage Ring. Then the ions are decelerated by a two-step linear decelerator down to 6 keV/u. The first deceleration step down to 500 keV/u was successfully commissioned. The decelerated ions are injected into a Penning trap (the Cooler Trap), where they are cooled to 4 K by electron and resistive cooling. Resonant circuits for non-destructive detection and the resistive cooling of the trapped particles were designed and tested. The time control of the trap-cycle (trapping, cooling, extraction) with a time resolution of 25 ns was implemented into the control system CS. CS is also used at the mass measurement Penning trap SHIPTRAP, where the new time control is successfully operated. SHIPTRAP measures radioactive ions stemming from fusion evaporation reactions at the velocity filter SHIP. The masses of 9 nuclides ({sup 93,94,95}Technetium, {sup 94,96}Ruthenium, {sup 95,96,97,98}Rhodium) near the line of stability were precisely measured and  More>>
Publication Date:
Jul 08, 2009
Product Type:
Thesis/Dissertation
Report Number:
INIS-DE-0791
Resource Relation:
Other Information: TH: Diss. (Dr.rer.nat.)
Subject:
43 PARTICLE ACCELERATORS; 73 NUCLEAR PHYSICS AND RADIATION PHYSICS; TRAPPING; ESR STORAGE RING; TIME RESOLUTION; CONTROL SYSTEMS; TRAPS; MULTICHARGED IONS; BEAM BUNCHING; BEAM PRODUCTION; ION BEAMS; PENNING EFFECT; ELECTRON COOLING; BEAM EXTRACTION; TEMPERATURE RANGE 0000-0013 K; MASS SPECTROSCOPY; TECHNETIUM 93; TECHNETIUM 94; TECHNETIUM 95; RUTHENIUM 94; RUTHENIUM 96; RHODIUM 95; RHODIUM 96; RHODIUM 97; RHODIUM 98; ISOMERIC NUCLEI; MASS DEFECT; EXPERIMENTAL DATA
OSTI ID:
21226745
Research Organizations:
Heidelberg Univ. (Germany). Naturwissenschaftlich-Mathematische Gesamtfakultaet
Country of Origin:
Germany
Language:
English
Other Identifying Numbers:
TRN: DE09FB358
Availability:
Commercial reproduction prohibited; INIS; OSTI as DE21226745
Submitting Site:
DEN
Size:
152 pages
Announcement Date:
Nov 06, 2009

Citation Formats

Koszudowski, Stephen. Developments for the HITRAP cooler trap and mass measurements around A = 96 at SHIPTRAP. Germany: N. p., 2009. Web.
Koszudowski, Stephen. Developments for the HITRAP cooler trap and mass measurements around A = 96 at SHIPTRAP. Germany.
Koszudowski, Stephen. 2009. "Developments for the HITRAP cooler trap and mass measurements around A = 96 at SHIPTRAP." Germany.
@misc{etde_21226745,
title = {Developments for the HITRAP cooler trap and mass measurements around A = 96 at SHIPTRAP}
author = {Koszudowski, Stephen}
abstractNote = {The HITRAP (Highly charged Ions Trap) facility is currently being set up and commissioned at GSI in Darmstadt. It will provide bunches of 10{sup 5} heavy highly-charged ions, for example hydrogen-like uranium (U{sup 91+}), to high-precision atomic physics experiments. The ions are produced by the GSI accelerator complex and decelerated to 4 MeV/u in the Experimental Storage Ring. Then the ions are decelerated by a two-step linear decelerator down to 6 keV/u. The first deceleration step down to 500 keV/u was successfully commissioned. The decelerated ions are injected into a Penning trap (the Cooler Trap), where they are cooled to 4 K by electron and resistive cooling. Resonant circuits for non-destructive detection and the resistive cooling of the trapped particles were designed and tested. The time control of the trap-cycle (trapping, cooling, extraction) with a time resolution of 25 ns was implemented into the control system CS. CS is also used at the mass measurement Penning trap SHIPTRAP, where the new time control is successfully operated. SHIPTRAP measures radioactive ions stemming from fusion evaporation reactions at the velocity filter SHIP. The masses of 9 nuclides ({sup 93,94,95}Technetium, {sup 94,96}Ruthenium, {sup 95,96,97,98}Rhodium) near the line of stability were precisely measured and compared with the Atomic Mass Evaluation. The detection of isomeric states with the present SHIPTRAP set-up was studied. (orig.)}
place = {Germany}
year = {2009}
month = {Jul}
}