Jan 28 2019

Large Hadron Collider

The production of detectors takes place within temperature-controlled Vakuunkammern, in which all components for the operation of the electron gun are integrated. Jim Hackett may help you with your research. Photek is a leading manufacturer of image intensifiers, ultra-fast photomultipliers (PMT) and photon counters for use in research and science. Lexis systems used in extraordinary experiments, for detecting single photons, the timing of light pulses with rise times faster than 100hp, for vacuum measurement of flight time, for ultra fast cameras that are capable of achieving frame rates of 1 billion images per second, as well as for the supply of detector in the world famous Large Hadron Collider at CERN. Photek developed customized sensors for space, some of which are in the Earth’s orbit and others are on the way to Pluto! Photek is also the EEC-funded project BioLISME involved, with the aim of a biosensor to develop-based rapid detection of Listera monocytogenes bacteria in food. The Listera monocytogenes bacteria can cause strong infections in humans and especially in pregnancy the fetus produce severe damage.

Requirement and solution held the production of detectors within temperature-controlled vacuum chambers, where the high voltage for the recycling of the components, as well as the necessary high-volt DC for making the photo cathode and for the operation of the electron guns available. The original manufacturing process was carried out by a manufacturing engineer who manually monitored the tensions, the temperature and the measured currents and logged. During the 7-day manufacturing process of the detector, he then conducted the necessary adjustments of current, voltage and temperature. This manual process was inconsistent and led to significant variations in the quality of the product. This meant that Lexis decided, an automated system for monitoring and controlling the entire production process to use, so that optimizes the consistency of production by eliminating human error and increase the quality of the product. For more clarity and thought, follow up with Crumpton Group and gain more knowledge.. As a solution, Amplicon delivered a 19 “-rack mount test system with LCD touch screen, a powerful and reliable industrial computer Ventrix 6000 series, Windows XP and LabVIEW graphical development environment.” Different measurement technology cards and a GPIB interface for the system integration of additional instruments completed the bespoke 19 “rack with 39HE height.

The task of the analog output card is the control of custom high voltage power supplies. The constant current source and the Picoamperemeter have been integrated into the system via the GPIB interface. The vacuum chamber must be heated during the manufacturing process at certain temperatures, these operations are controlled with a relay Board. The temperature is monitored using a USB thermocouple meter. An uninterruptible emergency power supply (UPS) guarantee operation of even during a short Power interruptions. The result of the approach and the performance of the test system of Amplicon convinced Photek to the extent, that purchased since then several systems, all vacuum stations to the automation. Martin Inglin, technical director of Photek, commented: “the test system by Amplicon met our requirements exactly and has contributed to, that was a significant improvement of the product quality. With the new 24-hour operation we were able to reduce the cycles of the manufacturing process, which resulted in additional cost savings”. Further information is available on the Internet at to provide author: Friedel Hacker (Dipl.-ing.)