PICOSEC: Charged particle timing at sub-25 picosecond precision with a Micromegas based detector
J. Bortfeldt
(1)
,
F. Brunbauer
(1)
,
C. David
(1)
,
D. Desforge
(2)
,
G. Fanourakis
(3)
,
J. Franchi
(1)
,
M. Gallinaro
(4)
,
I. Giomataris
(2)
,
D. Gonzalez-Diaz
(5)
,
T. Gustavsson
(6, 7)
,
C. Guyot
(2)
,
F. Iguaz
(2)
,
M. Kebbiri
(2)
,
P. Legou
(2)
,
J. Liu
(8)
,
M. Lupberger
(1)
,
O. Maillard
(2)
,
I. Manthos
(9)
,
H. Muller
(1)
,
V. Niaouris
(9)
,
E. Oliveri
(1)
,
T. Papaevangelou
(2)
,
K. Paraschou
(9)
,
M. Pomorski
(10)
,
B. Qi
(8)
,
F. Resnati
(1)
,
L. Ropelewski
(1)
,
D. Sampsonidis
(9)
,
T. Schneider
(1)
,
P. Schwemling
(2)
,
L. Sohl
(1)
,
M. Van Stenis
(1)
,
P. Thuiner
(1)
,
Y. Tsipolitis
(11)
,
S. Tzamarias
(9)
,
R. Veenhof
(1)
,
X. Wang
(8)
,
S. White
(1)
,
Z. Zhang
(8)
,
Y. Zhou
(8)
1
CERN -
European Organization for Nuclear Research
2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
3 NCSR - National Center for Scientific Research "Demokritos"
4 Faculdade de Ciencias da Universidade de Lisboa
5 USC - Universidade de Santiago de Compostela [Spain]
6 DICO - Dynamique et Interactions en phase Condensée
7 LIDYL - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
8 USTC - University of Science and Technology of China [Hefei]
9 Department of Physics [Thessaloniki]
10 LCD (CEA, LIST) - Laboratoire Capteurs Diamant (CEA, LIST)
11 NTUA - National Technical University of Athens [Athens]
2 IRFU - Institut de Recherches sur les lois Fondamentales de l'Univers
3 NCSR - National Center for Scientific Research "Demokritos"
4 Faculdade de Ciencias da Universidade de Lisboa
5 USC - Universidade de Santiago de Compostela [Spain]
6 DICO - Dynamique et Interactions en phase Condensée
7 LIDYL - Laboratoire Interactions, Dynamiques et Lasers (ex SPAM)
8 USTC - University of Science and Technology of China [Hefei]
9 Department of Physics [Thessaloniki]
10 LCD (CEA, LIST) - Laboratoire Capteurs Diamant (CEA, LIST)
11 NTUA - National Technical University of Athens [Athens]
Résumé
The prospect of pileup induced backgrounds at the High Luminosity LHC (HL-LHC) has stimulated intense interest in developing technologies for charged particle detection with accurate timing at high rates. The required accuracy follows directly from the nominal interaction distribution within a bunch crossing ( cm, ps). A time resolution of the order of 20–30 ps would lead to significant reduction of these backgrounds. With this goal, we present a new detection concept called PICOSEC, which is based on a “two-stage” Micromegas detector coupled to a Cherenkov radiator and equipped with a photocathode. First results obtained with this new detector yield a time resolution of 24 ps for 150 GeV muons, and 76 ps for single photoelectrons