| CMS Note | |
| Report number | CMS-CR-2013-226 |
| Title | The CMS Hadron Forward Calorimeter Upgrade during Phase I |
| Author(s) | Gulmez, Erhan (Bogazici U.) |
| Collaboration | CMS Collaboration |
| Publication | 2014 |
| Imprint | 16 Aug 2013 |
| Number of pages | 6 |
| In: | 14th ICATPP Conference on Astroparticle, Particle, Space Physics and Detectors for Physics Applications, Como, Italy, 23 - 27 Sep 2013, pp.568-572 |
| DOI | 10.1142/9789814603164_0089 |
| Subject category | Detectors and Experimental Techniques |
| Accelerator/Facility, Experiment | CERN LHC ; CMS |
| Abstract | The CMS Hadron Forward Calorimeter will be upgraded during phase 1. The upgrade will include the replacement of the current PMTs with the 4-anode ones and the readout electronics. Currently, stray muons hitting the PMT windows produce Cherenkov light causing erroneous signals. These signals are detrimental to the triggering and physic results, since such signals mimic very high energy events. The new 4-anode PMTs are selected because of their thin windows to reduce the Cherenkov light production. Additional anodes also provide information to eliminate such signals. These new PMTs have been tested extensively to understand their characteristics and to develop the algorithms to eliminate the unwanted signals. Eventually, the current read out will be replaced with two-channel readout electronics for each PMT. The overall expected improvement on the physics results will also be discussed. |
| Copyright/License | Preprint: (License: CC-BY-4.0) |
Corresponding record in: Inspire
Record created 2013-09-04, last modified 2018-06-07
