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Jürgen Florenkowski GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract "DIRAC-PHASE-1&quo PowerPoint Presentation
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Jürgen Florenkowski GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract "DIRAC-PHASE-1&quo - PowerPoint PPT Presentation


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Task number SIS18- 4 . Injection / extraction upgrade. Jürgen Florenkowski GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract "DIRAC-PHASE-1" for the FAIR project September 26, 2006. Extraction

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Jürgen Florenkowski GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract "DIRAC-PHASE-1&quo


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Presentation Transcript
slide1

Task number SIS18- 4

Injection / extraction upgrade

Jürgen Florenkowski

GSI, Darmstadt

Agenda Annual Report Meeting

EU construction ( CNI ) contract

"DIRAC-PHASE-1"

for the FAIR project

September 26, 2006

Jürgen Florenkowski

upgrade motivation
Extraction

We have to analyse the extraction in booster mode. Further investigations has to find out, where is the limitation for the acceptance.

The first assumption is that the dipole chamber in front of the extraction channel is the reason for the limitation.

Upgrade Motivation

Jürgen Florenkowski

upgrade motivation3
Upgrade Motivation
  • Injection (e – septum)
  • The maximum field strength of the electrostatic septum is not sufficient for injection of U28+ - beams at the standard energy of 11.4 MeV/u
  • (at present 7.1 MeV/u).
  • Currently the electrostatic septum is not protected against beam losses in the injection channel. The new one has a scraper to protect the anode made of 0.1mm wires.
  • Beam diagnostic is necessary to minimize the losses while injection from transfer channel to SIS. This is not present yet.

Jürgen Florenkowski

upgrade motivation4
Upgrade Motivation
  • Inflector Magnet
  • The acceptance limitation is given by the present inflector magnet in front of the injection septum. The present magnet is divided in 3 parts. A new development optimise the beam path to the limited space between transfer channel and SIS beam pipe.
  • For the bake procedure we have to raise the coils from the beam pipe. Only then we are able to install the heating seal. After the bake procedure we have to reinstall the coils. The new inflector magnet has the heating seal build in. That minimize the time for service.

Jürgen Florenkowski

slide5

The heavy ion synchrotron SIS 18

Injection septum

SIS 18

Inflector magnet

UNILAC

Experiments

Extraction beam line

Jürgen Florenkowski

slide6

Main components of an e - septum

Deflection unit

Anode

Cathode

High voltage power supply

Vacuumchamber

Jürgen Florenkowski

parameters of the e septum
Parameters of the e-septum

Comparison of existing

and

new e-septum

Jürgen Florenkowski

slide8

Electrostatic field calculations

SIS 18

UNILAC

Anode

Cathode

  • Design values:
  • Voltage: 300 kV
  • Gap width: 3 cm
  • Field strength max.: 100 kV / cm
  • Deflection angle: 2.5 °

Jürgen Florenkowski

septum design
Septum design
  • Design goals:
  • Adjustable anode and cathode
  • 300 kV insulation
  • Back able up to 300 °
  • Beam diagnostic (profile monitor)
  • Septum protection (scraper)

Jürgen Florenkowski

cathode surface treatment
Cathode surface treatment
  • Requirements :
  • 300°C back able surface
  • Field strength 100KV / cm
  • Cooperation with Fraunhofer Institut Elektronenstrahl- und
  • Plasmatechnik
  • Plasma activated high rate deposition of Aluminumoxid
  • GSI will ship a test cathode of high-grade steel and aluminum in October 2006
  • After treatment GSI will test the maximum reachable field strength and heat the test cathode up to 300°C

Jürgen Florenkowski

option electron beam treatment

1 mm

1 mm

Option: electron - beam treatment

In parallel we have the treatment procedure with pulsed electron beams

developed by the Institute of High current electronics in Tomsk (RU)

Radiation facility

Stainless steel

treatment

After

Before

Jürgen Florenkowski

slide12

Time schedule

Jürgen Florenkowski

slide13

Costs e - septum

  • Construction costs GSI
  • Preliminary investigations and project analyses 110 h
  • 3D – construction 470 h
  • Drawings 2D 100 h
  • Summary 680 h
  • Manufacturing costs GSI and other companies
  • Material 42.600€
  • Assembly 261h / 60€ 15.660€
  • Unexpected or additional work 21.847€
  • Summary 80.107€
  • Cathode Treatment
  • Fraunhofer Institut Elektronenstrahl- und Plasmatechnik 20.900€
  • Institute of high current electronics in Tomsk (RU) 200.000€
  • 300KV power supply
  • Supplied by FUG and examined by GSI 160.000€

Jürgen Florenkowski

inflector magnet
Inflector Magnet

Inflector Magnet

Device to raise the Magnet

Connector side

  • Present Design

e - septum

SIS beam pipe

Rack

Jürgen Florenkowski

new design
New design

Magnet

  • Design goals
  • Build in heating seal
  • Optimized beam path

Injection channel

Connector box

SIS beam pipe

Jürgen Florenkowski

inflector magnet16
To finish the project inflector magnet we have to

Fix the design

We have to examine the offers from outside firms. The dead line for the offers was 22.09.06.

Check the personnel involvement

Cost estimate

Commissioning parts

Assembling the magnet

Testing

Installation

Inflector Magnet

Jürgen Florenkowski