Post on 13-Jan-2016
Jürgen Florenkowski
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
Jürgen Florenkowski
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.
Jürgen Florenkowski
Upgrade MotivationUpgrade 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 MotivationUpgrade 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
The heavy ion synchrotron SIS 18
Injection septum
Experiments
SIS 18
UNILAC
Extraction beam line
Inflector magnet
Jürgen Florenkowski
Main components of an e - septum
Deflection unit
High voltage power supply
CathodeAnode
Vacuum chamber
Jürgen Florenkowski
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
Jürgen Florenkowski
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
Jürgen Florenkowski
Septum designSeptum 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 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
Jürgen Florenkowski
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)
Jürgen Florenkowski
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
Jürgen Florenkowski
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€
15.660ۥ Unexpected or additional work
21.847€Summary
80.107€
Cathode Treatment• Fraunhofer Institut Elektronenstrahl- und Plasmatechnik
20.900ۥ 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 MagnetInflector Magnet
Present Design
Inflector Magnet
e - septum SIS beam pipe
Device to raise the Magnet Connector side
Rack
Jürgen Florenkowski
New design
Design goals• Build in heating seal
• Optimized beam path
SIS beam pipe
Magnet
Injection channel Connector box
Jürgen Florenkowski
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