Concept of beamline and sample chamber - 11th of June 2009

We have designed part of the beam line that will be placed behind the picosecond electron accelerator. It will consist of a view elements that have the function to illuminate the cathode surface with UV pulses, guide the electron beam to the sample and place different samples in the electron beam. All will take place in vacuum.

The samples will be placed on a big wheel so that we can test more that one sample before we have to open the sample chamer. The sample wheel can be moved with respect to the electron beam, so that the total area of the sample can be used to study the properies. The sample chamber has to laser beam lines that cross the samples at exactly the same position as the electron beam. We have the possibility to use to different wavelength regions to probe the sample, that are the VISible and the InfraRed.

Below, you will find to pictures showing the global layout. One is showing only the essential parts of the beam line and sample chamber. The other is showing the total cross section.

So, far a few components have been realized. One of them is the big sample chamber and the sample wheel. Those components are ready to be installed as soon as the RF processing is succeshully finished.

Essential components of the beam line and sample chamber: UV incoupling, steering magnets, filter wheel, beam monitor and faraday cup.

Total cross section of the accelerator, beam line and sample chamber.

Repair of azimuthal orientation - 7th of Februari

During the assembly of the cavity on 20th of September 2006 in Eindhoven we discovered that there was an azimuthal mismatch between the cavity orientation and the flange of the stainless steel vacuum container (see foto 1 and 2).

The solution was to replace the fitting pin with a new one having an offset. Last week we installed this new pin. The last photo shows that the replacement was successful. Now both the cooling channel and all the bolts fit correctly.


1- Assembly in Eindhoven in September 2006
2- The mismatch between the cavity and SS container.

3- The new fitting pin.
4- Correct assembly.

Final assembly of Accelerator Cavity – 20 September 2006

This day we went to Eindhoven University of Technology to do the final assembly of the accelerator cavity and take it to Delft.

Middle part	RF input coupler part
Full assembly of copper parts.	Copper cavity fixed into stainless steel container.

Electrical validation of Accelerator Cavity – 25 August 2006

This day we went to Eindhoven University of Technology to perform electrical measurements on the accelerator cavity after the final turning. The measurements are summarized in the following report: ElectricalValidationCavity.pdf

Resonance frequency measured by Network Analyzer.

Beat ball measurement setup to measure the on-axis electric field strength.

Installation of optical table for electron accelerator – 8 August 2006

In August the optical table on which the electron accelerator will be constructed, is installed.

Positioning of optical tables.	Optical table assembly positioned in the accelerator room.
Viewed from the other side.

Shipment of Modulator – 7 Aug 2006

The shipment of the Modulator and klystron has arrived in Delft.

Modulator	Klystron
Klystron Magnet

Test of soldering at workshop of Eindhoven University of Technology – 11 Jul 2006

The cooling water channels and Thermocoax Heating elements have been soldered. Before the final turning will start, this soldering is tested on leakages.

Copper cavity parts.	RF-input coupler side with Thermocoax heating element.
Assembly of middle part with cathode part including cooling water channels and Thermocoax heating element.

Visit to ScandiNova in Uppsala Sweden – 7 Jul 2006

Beginning of July 2006 we have visited ScandiNova in Uppsala for the Factory Acceptance Test of the Modulator.

Left-to-right: W. Knulst (TU Delft), M. Vermeulen (TU Delft), H. Jansson (ScandiNova), M. Lindholm (ScandiNova)

Completion of Accelerator Room in DelftChemTech building – 3 March 2006

The accelerator room is delivered beginning of March 2006.

Below you see two pictures taken at that time.

Entrance to the accelerator room.

Accelerator Room.