Abstracts Brochure - CERN

TUPLS — Poster Session 27-Jun-06 16:00 - 18:00
UNILAC Upgrade Programme for the Heavy Element Research at GSI-SHIP
In the field of heavy-element research using
the velocity separator SHIP significant
achievements were made at GSI during the
last 30 years. The experiences obtained of ex-
W. Barth, L.A. Dahl, S. Hofmann, K. Tinschert (GSI) U. Ratzinger
(IAP)
periments clearly show that superheavy-element research was always based on efforts to extend the limits of technical
possibilities - of these the increase of beam intensity is one of the major contributions. This paper provides for technical
information on the already planned upgrades of the present facility, which results in a significant overall increase
of the experimental sensitivity. It is foreseen to investigate and to build a sc 28 GHz-ECR ion source, which should
increase the primary beam intensities. The beam coming from the new ECR source will be delivered to the GSI-High
Charge State Injector by a second LEBT-system. An upgrade program for the rf-amplifiers and the rf-structures is
intended to increase the duty factor from 30 % to 50 %. Besides the ECR-source a new RFQ accelerator and the IH
structure may alternatively serve as an injector for an new advanced stand alone accelerator providing for 100 % duty
factor. Two different linac-layouts will be discussed.
The HITRAP Decelerator Project at GSI
The heavy ion trap (HITRAP) at GSI is a
funded project since 2004. Highly charged
ions up to U 92+ provided by the GSI accelerator
facility will be decelerated and subse-
L.A. Dahl, W. Barth, M. Kaiser, O.K. Kester, H.J. Kluge (GSI) B.
Hofmann, U. Ratzinger, A.C. Sauer, A. Schempp (IAP)
quently injected into a Penning trap for further cooling almost to rest. A combination of an IH − and an RFQ-structure
decelerates the ions from 4 MeV/u down to 6 keV/u. In front of the decelerator a double-drift-buncher-system
provides for phase focusing and a final debuncher integrated in the RFQ-tank reduces the energy spread in order to
improve the efficiency for beam capture in the cooler trap. The report gives an overview of the final beam dynamic
design of the entire decelerator. Besides the construction status of the cavities, particular beam diagnostic features
due to the short pulses of 1 µs and 108 MHz bunch frequency, and the measures for technical and controls integration
into the existing GSI accelerator complex are presented. Finally the recent time schedule and considerations for
commissioning are shown.
Status of the Linac-commissioning for the Heavy Ion Cancer Therapy Facility HICAT
A clinical facility for cancer therapy using energetic
proton and ion beams (C, He and O)
is under construction and will be installed at
the Radiologische Universitätsklinik in Hei-
M.T. Maier, W. Barth, C.M. Kleffner, B. Schlitt (GSI) R. Cee (HIT)
U. Ratzinger, A. Schempp (IAP)
delberg, Germany. It consists of two ECR ion sources, a 7 MeV/u linac injector and a 6.5 Tm synchrotron to accelerate
the ions to final energies of 50-430 MeV/u. The linac comprises a 400 keV/u RFQ and a 7 MeV/u IH-DTL operating at
216.8 MHz. In this contribution the current status of the linear accelerator is reported. After first tests with 1H + beam
of the RFQ at GSI, the commissioning of the accelerator in Heidelberg has already started. The commissioning with
beam is performed in three steps for the LEBT, the RFQ and the IH-DTL. For this purpose a versatile beam diagnostic
test bench has been designed. It consists of a slit-grid emittance measurement device, transverse pick-ups providing
for time of flight energy measurements, SEM-profile grids and different devices for beam current measurements.
This paper will provide for a status report of the linac-commissioning.
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