AMPLITUDE Magma 200 Handleiding voor snelle probleemoplossing - Pagina 6

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This is not an easy task and should not be attempted by the user; please contact Amplitude

for service.

2.1.7. PulseShaper not set

If the PulseShaper was powered down, it loses its configuration and by default blocks the

pulses. It must be set according to the "Load PulseShaper configuration" procedure. In case of

doubt whether the shaping is applied or not, reduce the regen pump to 53 % and apply the

spectral shaping again.

2.1.8. External devices

Please check that the following devices are functioning properly

High voltage switch not turned on: the unit is powered and the HV switch on the front

panel is ON.

High Voltage power supply: the failure LED is off, if on see section 1.4.

The embedded computers are on and responding: are the green LEDs on their front

panel is on (if not press the button and wait a minute for start-up), and check in the

embedded modules of the control software that their status is not frozen (graphs,

reading values not moving). If so try clicking "Restart" in the "Information tab, if it

doesn't work reset the computer by pressing the front button for 7 seconds and

restarting it, wait a minute for start-up.

The ethernet switch is ON: status LEDs of the cables are blinking while the embedded

computers are on. If the LEDs are all off power the switch off and on again, if it remains

off then contact Amplitude for service.

2.2. Hard checks

If none of the above apply, additional checks can be performed but they require opening the

amplifier and advanced knowledge is then needed; please contact Amplitude for assistance.

2.2.1. Input seed pulse in the regen amplifier

If all the checks from sections 2.1.2 (oscillator train visible on an oscilloscope), 2.1.3 ('Pockels

monitor' and 'Pulse picker monitor' signals have the duration indicated in the software) and

2.1.7 (spectral shaping applied) were performed the seeded pulses should be delivered to the

regen case unless an optical fibre from the oscillator or from the PulseShaper to the regen got

damaged. Nevertheless, it is possible to see if the pulses are sent through.

1. Stop the Front-end synchronisation signal in the SelectPulse's outputs to avoid any risk

of unwanted amplification.

2. Open the regen amplifier case and locate the output of the blue fibre from the

PulseShaper.

3. Block the beam path after the two first 45° mirrors.

4. At this point it is impossible to see the beam as the repetition rate is too low, to send

the whole oscillator train, go to the Magma 25 module / "Synchronisation" tab and

switch the "Pulse Picker" control from "Picker" to "Alignment". Now the beam should

be visible with an IR card or aa IR viewer.

5. Don't leave the pulse picker in alignment mode for too long as the PulseShaper heats

up with the incident power.

6. Don't forget to remove the beam block from the path before closing the regen case.

Magma 200

Quick troubleshooting guide

Version 1.00

11 avenue de Canteranne, Cité de la Photonique - Bâtiment MEROP A 33600 Pessac - France

Headquarters

Capital social: 317 100 €

Amplitude Laser Group

Tel: +33 (0)5 56 46 40 60

Headquarters

Amplitude Laser Group

Tel: +33 (0)5 56 46 40 60

Siret 434 637 005 - APE 6420Z

Fax: +33 (0)5 56 46 06 94

/ [email protected] / www.amplitude-laser.com

11 avenue de Canteranne, Cité de la Photonique - Bâtiment MEROPA 33600 Pessac - France

Capital social : 320 925 €

SIRET: 434 637 005 - APE 6420Z

Fax: +33 (0)5 56 46 06 94

[email protected]

N°TVA Intracom: FR 70 434 637 005

/ www.amplitude-laser.com