| Hauptseite > A new aerogel Cherenkov detector for DIRAC-II |
| Published Articles | |
| Report number | DIRAC-PUB-2008-03 |
| Title | A new aerogel Cherenkov detector for DIRAC-II |
| Author(s) | Allkofer, Y (Zurich U.) ; Amsler, Claude (Zurich U.) ; Horikawa, S (Zurich U.) ; Regenfus, Christian (Zurich U.) ; Rochet, J (Zurich U.) |
| Publication | 2008 |
| Number of pages | 4 |
| In: | Nucl. Instrum. Methods Phys. Res., A 595 (2008) pp.84-87 |
| In: | 6th International Workshop on Ring Imaging Cherenkov Counters, Trieste, Italy, 15 - 20 Oct 2007, pp.84-87 |
| DOI | 10.1016/j.nima.2008.07.046 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN PS ; DIRAC PS212 |
| Abstract | A new threshold Cherenkov detector using silica aerogel radiators is in operation in the DIRAC-II experiment at CERN. A duplex design was chosen to discriminate between kaons and protons in the momentum range 4-8 GeV/ c . The counter consists of o verlapping modules with two different refractive indices, 1.015 and 1.008, covering the low and high momentum regions, respectively. We developed a new design of alternating layers of aerogel tiles and diffusive reflector foils coated with wavelength shif ter to improve light collection in the aerogel. A pyramidal shape of the aerogel radiator was also adopted for best signal uniformity over a large sensitive area. We report on the detector status and its performance in the DIRAC 2007 run. |
| Copyright/License | publication: © 2008-2025 Elsevier B.V. |