| Hovedsiden > Wavelength shifting films on multianode PMTs with UV-extended window for the CBM RICH detector |
| Published Articles | |
| Title | Wavelength shifting films on multianode PMTs with UV-extended window for the CBM RICH detector |
| Author(s) | Adamczewski-Musch, J (Darmstadt, GSI) ; Becker, K -H (Wuppertal U.) ; Belogurov, S (Moscow, ITEP) ; Boldyreva, N (St. Petersburg, INP) ; Chernogorov, A (Moscow, ITEP) ; Deveaux, C (Giessen U.) ; Dobyrn, V (St. Petersburg, INP) ; Dürr, M (Giessen U.) ; Eom, J (Pusan Natl. U.) ; Eschke, J (Darmstadt, GSI) ; Höhne, C (Giessen U.) ; Kampert, K -H (Wuppertal U.) ; Kleipa, V (Darmstadt, GSI) ; Kochenda, L (St. Petersburg, INP) ; Kolb, B (Darmstadt, GSI) ; Kopfer, J (Wuppertal U.) ; Kravtsov, P (St. Petersburg, INP) ; Lebedev, S (Giessen U.) ; Lebedeva, E (Giessen U.) ; Leonova, E (St. Petersburg, INP) ; Linev, S (Darmstadt, GSI) ; Mahmoud, T (Giessen U.) ; Michel, J (Darmstadt, GSI) ; Miftakhov, N (St. Petersburg, INP) ; Nam, Y (Pusan Natl. U.) ; Niebur, W (Darmstadt, GSI) ; Oh, K (Pusan Natl. U.) ; Ovcharenko, E (Moscow, ITEP) ; Pauly, C (Wuppertal U.) ; Pouryamout, J (Wuppertal U.) ; Querchfeld, S (Wuppertal U.) ; Rautenberg, J (Wuppertal U.) ; Reinecke, S (Wuppertal U.) ; Riabov, Y (St. Petersburg, INP) ; Roshchin, E (St. Petersburg, INP) ; Samsonov, V (St. Petersburg, INP) ; Song, J (Pusan Natl. U.) ; Tarasenkova, O (St. Petersburg, INP) ; Torres de Heidenreich, T (Darmstadt, GSI) ; Traxler, M (Darmstadt, GSI) ; Ugur, C (Darmstadt, GSI) ; Vznuzdaev, E (St. Petersburg, INP) ; Vznuzdaev, M (St. Petersburg, INP) ; Yi, J (Pusan Natl. U.) ; Yoo, I -K (Pusan Natl. U.) |
| Publication | 2014 |
| Number of pages | 3 |
| In: | Nucl. Instrum. Methods Phys. Res., A 766 (2014) 180-182 |
| In: | 8th International Workshop on Ring Imaging Cherenkov Detectors, Hayama, Kanagawa, Japan, 2 - 6 Dec 2013, pp.180-182 |
| DOI | 10.1016/j.nima.2014.05.011 |
| Subject category | Detectors and Experimental Techniques |
| Abstract | Electron identification in the Compressed Baryonic Matter (CBM) experiment at the future Facility for Antiproton and Ion Research (FAIR) will be performed using a gaseous RICH detector. Due to the UV transparency of the CO 2 radiator, a high photon detection efficiency of the PMTs in use at small wavelengths is favourable. The use of wavelength shifting (WLS) films aims at increasing the integral quantum efficiency of the photon sensors. WLS films absorb UV photons and re-emit photons at longer wavelengths where the quantum efficiency of common photocathodes is higher. As photon sensors, multianode PMTs (MAPMTs) with bialkali or superbialkali photocathodes and UV-extended windows are envisaged. We present quantum efficiency measurements with and without WLS coating for different types of MAPMTs as well as results from a beam test at the CERN PS. An increased photon yield was observed when using WLS films. In addition, we discuss the effect of WLS films on the spatial resolution of MAPMTs. |
| Copyright/License | Elsevier B.V. |