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ELENA ION SOURCE 1 COMMISSIONING AND PRELIMINARY RESULTS ANA MEGIA. CERN. SEPTEMBER 2015.
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Transcript of ELENA ION SOURCE 1 COMMISSIONING AND PRELIMINARY RESULTS ANA MEGIA. CERN. SEPTEMBER 2015.
ANA MEGIA. CERN. SEPTEMBER 2015 1
ELENA ION SOURCE
COMMISSIONING AND PRELIMINARY RESULTS
ANA MEGIA. CERN. SEPTEMBER 2015 2
ANA MEGIA. CERN. SEPTEMBER 2015 3
H+/H- production
+/-100 kV Bias voltage
Tungsten filament
Decapole magnet
Magnetic filter
Pulsed extraction
Currents of tens of µA
ELENA Ion Source Design
ANA MEGIA. CERN. SEPTEMBER 2015 4
PULSE GEN.FILAMENT PS -+
ARC PS-+
Source
PULLER PS
CONTROL UNIT
220V/400Hz conv.
CONTROL UNIT
QUADRUPOLE PSs
PC
PC WS CONTROL
PC
MAINS
HIGH VOLTAGE AREA
HIGH VOLTAGE CABINET GROUND CABINET
PCPepper-pot
Puller
ScreenCam. Quadrup.
High voltage Electronic signals Fiber optics Computer com.
e-
e-
e-
e-
e-
Main triggerCalib. signal
HIGH VOLTAGE PS (+/-100kv)
Current meas.
CTWS
Stepper motor trigger
Measurement trigger
WS measurement
PICOSCOPE
TTLtoFO
ANA MEGIA. CERN. SEPTEMBER 2015 5
Source characterization
ANA MEGIA. CERN. SEPTEMBER 2015 6
Wire scanners
Pepper-pot
Current transformer
Raw data
ANA MEGIA. CERN. SEPTEMBER 2015 7
Where to begin?
H+/H-
Arc voltage
Arc current
Gas flow
Source voltage
Puller voltage
Quadrupole settings
ANA MEGIA. CERN. SEPTEMBER 2015 8
Wire Scanner analysis
Pepper-pot analysis
9
Results comparison (EIS-NP-SC-014)
WIR
E
SCA
NN
ERPE
PPER
PO
T
ANA MEGIA. CERN. SEPTEMBER 2015
ANA MEGIA. CERN. SEPTEMBER 2015 10
Results comparison (EIS-NP-SC-014)
WIR
E
SCA
NN
ERPE
PPER
PO
T
ANA MEGIA. CERN. SEPTEMBER 2015 11
Results comparison (EIS-PP-SC-004)
ANA MEGIA. CERN. SEPTEMBER 2015 12
Results comparison (EIS-PP-SC-004)
WIR
E
SCA
NN
ERPE
PPER
PO
T
ANA MEGIA. CERN. SEPTEMBER 2015 13
Results comparison (EIS-PP-SC-004)
WIR
E
SCA
NN
ERPE
PPER
PO
T
ANA MEGIA. CERN. SEPTEMBER 2015 14
Results comparison (EIS-NP-SC-037)
ANA MEGIA. CERN. SEPTEMBER 2015 15
Results comparison (EIS-NP-SC-037)
WIR
E
SCA
NN
ERPE
PPER
PO
T
ANA MEGIA. CERN. SEPTEMBER 2015 16
Results comparison (EIS-NP-SC-037)
WIR
E
SCA
NN
ERPE
PPER
PO
T
ANA MEGIA. CERN. SEPTEMBER 2015 17
Source re-installation
ANA MEGIA. CERN. SEPTEMBER 2015 18
ANA MEGIA. CERN. SEPTEMBER 2015 19
ANA MEGIA. CERN. SEPTEMBER 2015 20
What’s next?
Improve the ellipse fitting.
Analysis of all results.
Is it possible to get better RMS Emittance values??
Determine new interesting points to be measured.
Analyze Pepper-pot images for all the measurement points.
Ideas are welcome.
Waiting for some parts from Jülich (HV cables & safety hood). September 2015
Measurement plan for the source and the ion switch (Daniel Barna)
Timing and Oasis.
Integration of the source in the AD control system?
Regarding previous measurements:
Regarding source future operation:
ANA MEGIA. CERN. SEPTEMBER 2015 21
Timing
ANA MEGIA. CERN. SEPTEMBER 2015 22
PULSE GEN.
PICOSCOPECURRENT
TRANS.
CONTROL UNIT PULLER PS PULLER
WS MEAS.
WS STEPPER MOTOR
WS CONTROL
CONTROL TEST STAND
PICOSCOPECURRENT
TRANS.
CONTROL UNIT PULLER PS PULLER PS
WS MEAS.
WS STEPPER MOTOR
WS CONTROL
Local control of the source parameters
Trigger cable
OPTION I: LOCAL CONTROL (€)
OPTION II: REMOTE CONTROL (€€€)
5000 €1805 €
?
Trigger cable
Source parameters controlled from the control room by remote desktop app
Ethernet
Serial cable
ANA MEGIA. CERN. SEPTEMBER 2015 23
PICOSCOPECURRENT
TRANS.
CONTROL UNIT PULLER PS PULLER
WS MEAS.
WS STEPPER MOTOR
WS CONTROL
OPTION III:LOCAL CONTROL PREPARED FOR FUTURE REMOTE CONTROL (€€)
PULSE GEN.
OPTION IV: INTEGRATION OF THE SOURCE (€€€€)
OPTION II + man power
Trigger cable
1805 €
Source parameters controlled from the control room by remote desktop app
Ethernet
Serial cable
ANA MEGIA. CERN. SEPTEMBER 2015 24
QUESTIONS FROM TIMING TEAM
Will the source be always operated in pulsed mode? If so, which are the maximum and minimum frequency and pulse length?
Once the commissioning is finished and ELENA is connected to the AD ring, will the source need to be synchronized with the AD beam?
ANA MEGIA. CERN. SEPTEMBER 2015 25
Oasis
ANA MEGIA. CERN. SEPTEMBER 2015 26
PICOSCOPE OASIS
Picoscope trigger
CT calibration signal
Ion current
Wire scanner signal
Main trigger
CT calibration signal
Ion current
Extraction pulse
trigger
ANA MEGIA. CERN. SEPTEMBER 2015 27
Comments…
Cable request deadline 25th September !
ANA MEGIA. CERN. SEPTEMBER 2015 28
ANA MEGIA. CERN. SEPTEMBER 2015 29
H- preliminary results
ANA MEGIA. CERN. SEPTEMBER 2015 30
H+ preliminary results