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Simon C. Leemann • LEG Project Meeting • May 2, 2005

P A U L S C H E R R E R I N S T I T U T

May 2, 2005

Status Report100 keV DC Gun Test Stand

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Gun Test Stand Schedule

• Presently• Bunker and LAC are ready• Electrical installations and cabling completed• Solenoid field measurement completed

• Ongoing• Zoom optics resolution testing• The Holy Grail: UHV cleaned components should arrive this week (?)• Cabling of diagnostic module and connection to control system• EPICS drivers/software & optical link to hot deck

• Outlook• HV testing• Pumpdown and bakeout• Electron bombardment with a single-tip modified FEA• Commissioning & first measurements

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Test Stand Bunker Right Now...

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Hot Deck & Pulser

19” Rack100 kV

Ion Pump500 l/h

Isolating Transf.230 V

ExperimentSupport

Simon C. Leemann • LEG Project Meeting • May 2, 2005

LAC Installed

Simon C. Leemann • LEG Project Meeting • May 2, 2005

In-Vacuum Solenoid Magnet

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Solenoid Field Measurement Setup

Solenoid

Hall probe

3D mover

Solenoid temperaturereadout

Hall probe readout

Simon C. Leemann • LEG Project Meeting • May 2, 2005

SLS-TME-TA-2005-0264-› http://slsbd.psi.ch/pub/

Solenoid Field Measurement Results (1)

0

20

40

60

80

100

120

140

160

180

200

0 0.5 1 1.5 2 2.5 3 3.5

B [m

T]

I [A]

At solenoid center: s = 24 mm

linear no saturation

!Bz (Isol)

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Solenoid Field Measurement Results (2)

SLS-TME-TA-2005-0264-› http://slsbd.psi.ch/pub/

0

20

40

60

80

100

120

-60 -40 -20 0 20 40 60 80 100

B [m

T]

s [mm]

I = 2 AOff axis scan at I = 2 A

Solenoid

homogeneous

longitudinal symmetry

azimuthal symmetry

!Bz (s)

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Gun Test Stand Schedule

• Presently• Bunker and LAC are ready• Electrical installations and cabling completed• Solenoid field measurement completed

• Ongoing• Zoom optics resolution testing• The Holy Grail: UHV cleaned components should arrive this week (?)• Connecting diagnostics cabling• EPICS drivers/software & optical link to hot deck

• Outlook• HV testing• Pumpdown and bakeout• Electron bombardment with a single-tip modified FEA• Commissioning & first measurements

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Zoom Optics Resolution Measurement

Lenses

Screen

Light

Sample

Controller

Camera

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Connecting Diagnostics Cabling...

Simon C. Leemann • LEG Project Meeting • May 2, 2005

Gun Test Stand Schedule

• Presently• Bunker and LAC are ready• Electrical installations and cabling completed• Solenoid field measurement completed

• Ongoing• Zoom optics resolution testing• The Holy Grail: UHV cleaned components should arrive this week (?)• Cabling of diagnostics and connection to control system• EPICS drivers/software & optical link to hot deck

• Outlook• HV testing• Pumpdown and bakeout• Electron bombardment with a single-tip modified FEA• Commissioning & first measurements