Multi Beamlett Extraction Experiments and Sector Magnet Field Investigation
Platform Ground Pulsed Extract Power Supply Extraction Electrode, Coldbox and Analysing Magnet all Pulsed + 17kV - Platform DC Power Supply 35kV Post Extraction Acceleration Gap Laboratory Ground +- 18kV 35keV H - Beam
Profile Measurements for Different Extraction Voltages
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 18 kV Post Acceleration Voltage 47 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 19 kV Post Acceleration Voltage 42 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 20 kV Post Acceleration Voltage 40 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 21 kV Post Acceleration Voltage 38 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 22 kV Post Acceleration Voltage 35 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 23 kV Post Acceleration Voltage 32 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 24 kV Post Acceleration Voltage 28 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 25 kV Post Acceleration Voltage 25 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 26 kV Post Acceleration Voltage 21 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 27 kV Post Acceleration Voltage 17 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 28 kV Post Acceleration Voltage 13 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 28.5 kV Post Acceleration Voltage 12 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 29 kV Post Acceleration Voltage 10 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 28.5 kV Post Acceleration Voltage 9 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 18 kV Post Acceleration Voltage 47 mA Beam Current 355 mm downstream from ground plane of post acceleration gap
17 kV Extract Potential x (mm) x (mRads) y (mm) y (mRads) 0.84 πmm-mRad norm rms 0.92 πmm-mRad norm rms 47 mA Beam Current The Present Situation
Multi Beamlett Extraction H2H2 Cs To study beam transport aperture plates with 5 separate 1 mm diameter holes have been constructed. Position of Caesium and Hydrogen dispensing holes Hole Index
VARY EXTRACTION VOLTAGE
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 6 kV Extraction Voltage 18 kV Post Acceleration Voltage
7 kV Extraction Voltage HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 9 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 10 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 11 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 12 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 13 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 14 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 15 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 16 kV Extraction Voltage 18 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 17 kV Extraction Voltage 18 kV Post Acceleration Voltage
5 H2 Cs 4321 Beam Current Variation with Extraction Voltage
Mapping the Field 5 H2H2 Cs 4321 θ r r = 105 mm r = 55 mm B B
Sector Magnet Field
Angle (Degrees) Magnetic Field
Angle (Degrees) Field Index
Overall Field Index
Sector Magnet Modifications 5 H2 Cs 4321
Sector Magnet Modifications 5 H2 Cs 4321
Sector Magnet Modifications 5 H2 Cs 4321
Sector Magnet Modifications 5 H2 Cs 4321
VARY POST ACCELERATION VOLTAGE
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 23 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 25 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 26 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 27 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 28 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 29 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 30 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 31 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 32 kV Post Acceleration Voltage 7 kV Extraction Voltage
HOLE 1HOLE 2 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 33 kV Post Acceleration Voltage 7 kV Extraction Voltage
VARY SECTOR MAGNET CURRENT
HOLE1 5.5 A Sector Magnet Current HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 7 kV Extraction Voltage 28 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL A Sector Magnet Current 355 mm downstream from ground plane of post acceleration gap 7 kV Extraction Voltage 28 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL A Sector Magnet Current 355 mm downstream from ground plane of post acceleration gap 7 kV Extraction Voltage 28 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL mm downstream from ground plane of post acceleration gap 7.0 A Sector Magnet Current 7 kV Extraction Voltage 28 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL A Sector Magnet Current 355 mm downstream from ground plane of post acceleration gap 7 kV Extraction Voltage 28 kV Post Acceleration Voltage
HOLE 1HOLE 2HOLE 3 HOLE 4HOLE 5ALL A Sector Magnet Current 355 mm downstream from ground plane of post acceleration gap 7 kV Extraction Voltage 28 kV Post Acceleration Voltage
VARY SCINTILATOR POSITION
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
HOLE 3 ALL mm downstream from ground plane of post acceleration gap 8 kV Extraction Voltage 27 kV Post Acceleration Voltage
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Cause of the cobra head 5 H2 Cs 4321 Hydrogen causing the meniscus to blow out?
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 25 kV Post Acceleration Voltage 25 mA Beam Current SLIT
2.5 mA/cm kV Extraction Voltage 35 kV Platform Voltage 25 kV Post Acceleration Voltage 5.8 mA Beam Current HOLE
Additional VARY EXTRACT ELECTRODE GAP
= 10 mm Post Ac. Gap / 1.1 mm Ext. Jaws = 10 mm Post Ac. Gap / 2.1 mm Ext. Jaws = 55 mm Post Ac. Gap / 2.1 mm Ext. Jaws
2.1 mm ext elec new PAE level with em scanners
1.1 mm ext elec new PAE level with em scanners
2.1 mm ext elec new PAE level with em scanners
1.1 mm ext elec new PAE level with em scanners
2.1 mm ext elec new PAE level with em scanners
1.1 mm ext elec new PAE level with em scanners
Integrated Light output for different extract jaw gaps