Tag archive: CALICE

Calorimeters don’t take holidays

| 6 August 2015 Summer breaks don't exist for detector prototypes. For almost three weeks in July – around the time that a new temperature record of 39.7 degrees was measured in Geneva – the team working on the technological prototype of a potential hadronic calorimeter for the ILD detector at the ILC took data at the Super Proton Synchrotron test beam at CERN. Category: Image of the week | Tagged: , , , , ,

CALICE under new leadership

| 30 April 2015 CALICE, the collaboration of detector developers working on calorimeters for the linear collider, has a new spokesperson. At their meeting during the ALCW2015 workshop, the collaboration elected Frank Simon from the Max Planck Institute for Physics in Munich, Germany, as their new head. He takes over from Jose Repond, Argonne National Lab. Category: Around the World | Tagged: , , , , ,

Calorimeters enjoy beam time

| 16 October 2014 Test beam season has started again. Two potential prototypes for future ILC detectors are being tested in a beamline at CERN that delivers hadrons from the proton synchrotron, CERN’s workhorse accelerator. The CALICE collaboration is looking forward to getting its hands on the fresh test beam data. Category: Around the World | Tagged: , , , , ,

Good signal, little noise

| 18 April 2013 A concept to save space and power for future particle detectors called power pulsing has recently been tested and proven to work on one of the possible calorimeter options for the future ILC detectors. The silicon-tungsten electromagnetic calorimeter prototype took data in test beam and magnet at the German lab DESY. The project is currently run by groups from France and Japan. Category: Around the World | Tagged: , , , , , , ,

Large-scale powering scheme has scientists’ pulses racing

Images: IPNL | 17 May 2012 For the first time, a large-scale calorimeter prototype for the ILC, fully equipped with embedded power-pulsed electronics, successfully passed a test beam at CERN a few weeks ago. A prototype of more than one cubic metre in size of CALICE’s Semi-Digital Hadronic Calorimeter successfully recorded and tracked 1 million particles from CERN’s SPS accelerator beam (muons and pions). Thanks to power pulsing, the detector front-end electronics was periodically disabled and enabled, following the beam cycle. Read more and view more photos about the test beam. Category: Image of the week | Tagged: , , , ,

The science of showers

| 12 January 2012 Good timing is a virtue. Just as comedians have to wait for just the right moment to deliver their punch line, linear collider physicists need to know when to make cuts. These cuts separate phenomena called particle showers from each other, making it possible for the physicists to tell which reaction originated from which collision. Two German PhD students have built a test device that is supposed to get behind the precise timing of showers. Category: Profile | Tagged: , , , ,

Going with the particle flow

| 15 September 2011 Resolved that pictures of particle jets don’t have to be fuzzy or gnarled, scientists developed the particle flow algorithm, a paradigm for effectively teasing out each particle’s energy from another’s. To make it work, researchers expanded the tracking capabilities of the detector model, enabling it to measure energies with higher precision. Category: Feature | Tagged: , , ,

The DHCAL expansion

| 12 May 2011 The Digital Hadron Calorimeter offers high-resolution images of particle showers. With the help of hundreds of thousands of readout pads, tiny pieces of each charged particle’s path within hadronic showers are recorded. The DHCAL brings scientists not only detailed images, but now also complete ones, having expanded its potential in recent months by tens of thousands of additional readout channels. Category: Feature | Tagged: ,

It’s particle showers in a tungsten hadron calorimeter

2 December 2010 The "What is it?" image of last week's ILC NewsLine is a picture-perfect example of why we now often call the calorimeter prototypes for the ILC "imaging calorimeters". To start with the solution, if you quickly want to know if you got it right: The picture shows three different types of particles in the CALICE tungsten hadron calorimeter prototype. From left to right, they are an electron, a muon and a pion. The images come from the recent test beam at CERN. Category: Feature | Tagged: ,

Textbook tests with tungsten

| 9 September 2010 In a hall for test beam experiments at CERN, next to the CLOUD climate experiment and an irradiation facility, sits a detector prototype that is in many ways a first. It's the first ever hadronic sandwich calorimeter (HCal) prototype made of tungsten. It's the first prototype for a detector for the Compact Linear Collider Study CLIC, developed by the linear collider detector R&D group (LCD group) at CERN. And it's the first piece of hardware that results directly from the cooperation between CLIC and ILC detector study groups. Now its makers are keen to see first particle showers in their detector. Category: Feature | Tagged: , , , , , ,
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