A cylindrical GEM detector with analog readout is under development for the upgrade of the Inner Tracker of the BESIII experiment at IHEP (Beijing). The new detector will match the requirements for momentum resolution (sigma(pt) /p(t) similar to 0.5% at 1 GeV) and radial resolution (sigma(xy) similar to 120 mu m) of the existing drift chamber and will improve significantly the spatial resolution along the beam direction (sigma(z) similar to 150 mu m) with very small material budget (less than 1.5% of X-0). With respect to the state of the art the following innovations will be deployed: a lighter mechanical structure based on Rohacell, a new XV anode readout plane with jagged strip layout to reduce the parasitic capacitance, and the use of the analogue readout inside a high intensity magnetic field to have good spatial resolution without increasing the number of channels.

A cylindrical GEM detector with analog readout for the BESIII experiment

AMOROSO, Antonio;BIANCHI, Fabrizio;COTTO, Giorgio;DE MORI, FRANCESCA;DESTEFANIS, Marco Giovanni Maria;GRECO, Michela;HU, Jifeng;MAGGIORA, MARCO;MARCELLO, Simonetta;RIVETTI, Angelo;SOSIO, Stefano;SPATARO, STEFANO GIOVANNI;ZOTTI, LAURA
2015

Abstract

A cylindrical GEM detector with analog readout is under development for the upgrade of the Inner Tracker of the BESIII experiment at IHEP (Beijing). The new detector will match the requirements for momentum resolution (sigma(pt) /p(t) similar to 0.5% at 1 GeV) and radial resolution (sigma(xy) similar to 120 mu m) of the existing drift chamber and will improve significantly the spatial resolution along the beam direction (sigma(z) similar to 150 mu m) with very small material budget (less than 1.5% of X-0). With respect to the state of the art the following innovations will be deployed: a lighter mechanical structure based on Rohacell, a new XV anode readout plane with jagged strip layout to reduce the parasitic capacitance, and the use of the analogue readout inside a high intensity magnetic field to have good spatial resolution without increasing the number of channels.
Frontier Detectors for Frontier Physics: Proceedings of the 13th Pisa Meeting on Advanced Detectors (FDFP 2015)
La Biodola, Isola d'Elba, Italy
May 24-30, 2015
824
515
517
http://www.sciencedirect.com/science/article/pii/S0168900215014564
BESIII experiment; GEM; Micro-pattern gas detectors; Tracking detectors; Nuclear and High Energy Physics; Instrumentation
Amoroso, A.; Baldini, R.; Bertani, M.; Bettoni, D.; Bianchi, F.; Calcaterra, A.; Carassiti, V.; Cerioni, S.; Chai, J.; Cibinetto, G.; Cotto, G.; De Mori, F.; Destefanis, M.; Dong, J.; Dong, M.; Farinelli, R.; Fava, L.; Felici, G.; Fioravanti, E.; Garzia, I.; Gatta, M.; Greco, M.; Hu, J.F.; Johansson, T.; Leng, C.; Li, H.; Liu, Z.; Maggiora, M.; Marcello, S.; Marciniewski, P.; Melchiorri, M.; Mezzadri, G.; Morello, G.; Ouyan, Q.; Pacetti, S.; Patteri, P.; Rivetti, A.; Rosner, C.; Savrié, M.; Sosio, S.; Spataro, S.; Tskhadadze, E.; Wang, K.; Wang, L.; Wu, L.; Ji, X.; Ye, M.; Zallo, A.; Zhang, Y.; Zotti, L.
File in questo prodotto:
File Dimensione Formato  
NIM_A824_2016_515.preprint_4aperto.pdf

Accesso aperto

Descrizione: Preprint of NIM_A824_2016_515.pdf
Tipo di file: PREPRINT (PRIMA BOZZA)
Dimensione 459.54 kB
Formato Adobe PDF
459.54 kB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/1636171
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 9
  • ???jsp.display-item.citation.isi??? 9
social impact