Jürgen Florenkowski GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract...

Jürgen Florenkowski


GSI, Darmstadt

Agenda Annual Report Meeting

EU construction ( CNI ) contract

"DIRAC-PHASE-1"

for the FAIR project

September 26, 2006

Injection / extraction upgrade

Task number SIS18- 4


Upgrade MotivationUpgrade 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.



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.



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.


The heavy ion synchrotron SIS 18

Injection septum

Experiments

SIS 18

UNILAC

Extraction beam line

Inflector magnet


Main components of an e - septum

Deflection unit

High voltage power supply

CathodeAnode

Vacuum chamber


Parameters of the e-septumParameters of the e-septum

Existing New

Max. Voltage 160 kV 300 kV

Field strength 50 kV / cm 80 kV / cm

Back able Up-to 150 degree Up-to 300 degree

Gap width max. 3 cm 3 cm

Diagnostics None Beam profile monitor

Protection None Scraper

Comparison of existingand

new e-septum


Design values:

• Voltage: 300 kV

• Gap width: 3 cm

• Field strength max.: 100 kV / cm

• Deflection angle: 2.5 °

Electrostatic field calculations

Anode Cathode

SIS 18

UNILAC


Septum designSeptum design

Design goals:

• Adjustable anode and cathode

• 300 kV insulation

• Back able up to 300 °

• Beam diagnostic (profile monitor)

• Septum protection (scraper)


Cathode surface treatmentCathode 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


Option: electron - beam treatmentOption: electron - beam treatment

Radiation facility

1 mm

1 mm

Stainless steel

treatment

Before After

In parallel we have the treatment procedure with pulsed electron beamsdeveloped by the Institute of High current electronics in Tomsk (RU)


Time scheduleNr. Vorgangsname

1 I-Septum SIS Redesign

2 Lieferung 300 kV Netzgerät

3 E - Feldrechnungen

4 160 kV Durchführung

5 Redesign für 300 kV

6 300 kV Einbauten

7 Feldrechnungen abgeschlossen

8 Konstruktion

9 Platzanalyse

10 3D- Kathode

11 Feldrechnungen Kathode

12 3D - HV - Durchführung

13 Feldrechnung HV - Durchführung

14 3D - Lineardurchführ. Kath./Anod.

15 3D - Lineardurchführ. Profilgitter

16 3D - Lineardurchführ. Scraper

17 3D - Tank + Diagnosebox

18 2D - Kathode und HV-Durchf.

19 3D/2D - Strahlrohrabzweigung

20 2D - Tank + Diagnosebox

21 3D - Scraper

22 3D - Profilgitter

23 Ausschreibung + Entscheidung

24 2D - Scraper und Gitter

25 3D - Modifkation der Anode

26 3D/2D - Gestellanpassung

27 Konstruktion Abgeschlossen

28 Fertigung

29 Strahlrohrabzweigung

30 Tank + Heizmanschetten

31 Gestell

32 Modifikation Anode

33 Kathode Fertigung

34 Kathode Plasmabeschichtung

35 HV - Durchführung

36 Profilgitter

37 Linearantriebe

38 Diagnosekammer

39 Scraper

40 Zusammenbau + Justage

41 Fertigstellung

42 UHV-Vorbereitung

43 Ausheizen

44 HV-Inbetriebnahme (Konditionieren)

45 Bereit zum Einbau

46 Einbau in das SIS

47 Justage

48 Projektabschluss

Petryk

Petryk

Petryk

Kopf

Kopf

Petryk

Kopf

Petryk

Kopf

Kopf

Kopf

Kopf

Vetter

Kopf

Vetter

Kopf

Kopf

Klappich

Vetter / Kopf

Kopf

Kopf

NTG

PINK

PRESS

?

NTG

FEP-Dresden

GSI

GSI

NTG

VA-TEC

GSI

GSI

UHV

UHV

Petryk

Großmontage

Pschorn

M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J F M A M J J A S O N D J FHälfte 1, 2005 Hälfte 2, 2005 Hälfte 1, 2006 Hälfte 2, 2006 Hälfte 1, 2007 Hälfte 2, 2007 Hälfte 1, 2008 Hälfte 2, 2008 Hälfte 1, 2009 Hälfte 2, 2009 Hälfte 1, 2010


Costs e - septum

Construction costs GSI• Preliminary investigations and project analyses 110

h• 3D – construction 470 h• Drawings 2D 100

hSummary 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€


Inflector MagnetInflector Magnet

Present Design

Inflector Magnet

e - septum SIS beam pipe

Device to raise the Magnet Connector side

Rack


New design

Design goals• Build in heating seal

• Optimized beam path

SIS beam pipe

Magnet

Injection channel Connector box


Inflector MagnetInflector Magnet

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

Jürgen Florenkowski GSI, Darmstadt Agenda Annual Report Meeting EU construction ( CNI ) contract...

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