Tag archive: DESY

Cryo crash test

| 12 June 2008 Particle physicists have the reputation that they need to smash things up in order to find out what they are about. Sometimes accelerator physicists get to smash stuff up, too: a group of engineers and technicians recently crash-tested a full cryomodule. They wanted to find out what the 12-metre piece of kit would look like if somebody happened to use the beam pipe as a stepladder, drive a tunnel vehicle into a flange or decide to rip out a vacuum pump. Category: Around the World | Tagged: , , , ,

CALICE collaboration is connected

5 June 2008 Even if you don't want to step through new control room's swish sliding doors, you can have a look inside DESY's new feature because of its doors made of glass: it is a medium-sized room with some technical interior and an ILC colour scheme. There are two computer working stations, each with four monitors and a small conference table; on a big screen you see the pictures from three webcams; and three clocks hang on the wall, showing the local times of DESY/CERN in Hamburg/Geneva, Fermilab near Chicago and KEK near Tokyo. Category: Around the World | Tagged: , ,

On the costing trail

| 22 May 2008 Hamburg isn't exactly known for its good weather and hours of sunshine per year. So when the sun is out and nature is exploding with spring leaves and early summer blossoms, Hamburgers go to every length to spend those precious times outside. Spending a day in a conference room darkened for better presentations, hunched over microphones to listen to colleagues at the other end of the world doesn't normally rank high on the list of things to do in Hamburg when the weather is nice. Nevertheless one of the participants of last week's cost management meeting described their three days as "very enjoyable", meaning it. One has to work on the ILC to appreciate the spirit... Category: Feature | Tagged: ,

Spin doctors

| 8 May 2008 Theorists and experimentalists aren't always of the same opinion. There is one thing on which opinions aren't polarised though, and that is polarisation. Polarisation is a special characteristic of a particle bunch – a sort of measure of the particles’ combined spin – that, when studied in the right sort of detector at the ILC, is supposed to give clues and answers on phenomena like the Higgs, supersymmetry or searches for new physics and extra dimensions. To study the collisions, and also to understand polarisation better, a few groups of a total of about 30 people around the world are designing and building polarimeters that measure the degree of polsarisation of the particles before and after collisions. They have just had their first 'collaboration' meeting at DESY in Zeuthen, near Berlin, Germany. Category: Around the World | Tagged: , , , , , ,

Learning to accelerate

| 10 April 2008 When your day job means measuring the F2 structure function of the proton or hunting for the Higgs boson, you don't usually stop and wonder how exactly the ingredients of your events reached their collision point. Some 30 junior researchers have just learnt to do just this: at the recent 'Terascale Accelerator School', the first of its kind organised in Germany and a project of the Helmholtz Alliance, physics students turned into nuts-and-bolts accelerator experts for a week. Category: Around the World | Tagged: , , , ,

A horizontal challenge

| 17 January 2008 The world’s first horizontal multi-beam klystron has started its site acceptance test at DESY. Built by the Japanese company Toshiba, it is the first of three prototypes from different companies to arrive for the test that will determine whether the new klystron design works. The 10-megawatt horizontal klystron was developed for the European X-ray Free Electron Laser (XFEL) and is also part of the reference design for the ILC. Category: Around the World | Tagged: , , , ,

Telescope arms open wide

| 18 October 2007 The EUDET telescope, a high-precision device that lets detector developers check the accuracy of their prototype by using particle beams and the EUDET telescope and comparing with accurately its determined tracks, has just finished a marathon in test beams around Europe. During six weeks in beams at DESY and CERN its makers tested it to the core and are now happy to pass their instrument on to users. Category: Feature | Tagged: , , ,

Piece by piece

| 6 September 2007 The 1200 parts started to arrive at Fermilab in June. When fully assembled, these many parts will make up the first cryomodule for International Linear Collider R&D in the United States. The ILC will ultimately require 1680 of these cooled modules that hold the superconducting cavities, maintaining a temperature only two degrees above absolute zero. This first US cryomodule -which will only be used for R&D purposes-represents a special collaboration between Fermilab and DESY. Category: Feature | Tagged: , ,

Live from the test beam: calorimetry rises from the ashes

| 30 August 2007 This summer, a stage was all the world for some of the men and women of the CALICE collaboration. For the first time, the full prototypes of the electromagnetic calorimeter, the hadronic calorimeter and the tailcatcher and muon tracker (designed and built by international collaborations and assembled in Paris, Hamburg and Northern Illinois respectively) played lead roles in the SPS test beam at CERN. In more than two months, the collaboration collected more than 100 million events, nearly 14 terabytes of data, thus not only testing their prototypes but also the data grid. Category: Feature | Tagged: , , ,

Mapping a magnet

| 26 July 2007 Three pairs of eyes cast one last look around the room. Have all scissors, ladders, metallic tables been removed? No pins or pens lying around anymore? Once the team is sure that nothing is left in the area, they close the security doors and give the go-ahead – the magnet that has been to space can be charged for the first time since its arrival at its new home in the DESY test beam. Before its field of 1 Tesla can bend the tracks of particles in a EUDET detector prototype, however, the scientists have to map the field very precisely. And they don't want steel-capped boots flying into the coil. Category: Feature | Tagged: , , ,
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