Description
Ageing and interactions with materials
Mr
Miguel Morales
(Univ. Santiago de Compostela)
08/02/2012, 09:00
Ageing and interactions with materials
oral presentation
It is well known that electrodes for high rate resistive plate chambers need to show some electrical properties which are more demanding than the low rate ones. As expected from the stationary DC mode, the rate capability is limited by the product d · ρ · q, where an avalanche average charge q is depleted by a material of thickness d with a resistivity ρ. Using this approximation, the only...
Giulio Aielli
(ROMA2)
08/02/2012, 09:20
Ageing and interactions with materials
oral presentation
The measurement of cavern background has been carried out systematically since the beginning of LHC, as soon as the luminosity produced a detectable signal, from L=1028 cm-2s-1 of the early 2010 operation up to L=3.5x1033 cm-2s-1 at the end of 2011 proton-proton run, which is just 1/3 of the nominal LHC luminosity. The reason for this is to early foresee the running condition for the detector...
Prof.
Nayana Majumdar
(Saha Institute of Nuclear Physics)
08/02/2012, 09:40
Ageing and interactions with materials
oral presentation
Experimental evidences indicate that the surface treatment of the electrodes with
silicone in Bakelite-RPC improves the detector peformance in a significant way
[S. Biswas et al., NIM A602 (2009) 749, NIM A604 (2009) 310]. Studies on the
morphological features of the Bakelite grades used for building the detectors
reveal the presence of surface asperities in these materials. Thus, a...
Mr
Suresh Kalmani
(Tata Institute of Fundamental Research)
08/02/2012, 10:00
Ageing and interactions with materials
oral presentation
The India-based Neutrino Observatory (INO) collaboration is planning to build a 50kt magnetized iron calorimeter (ICAL) detector using glass Resistive Plate Chambers (RPCs) as active detector elements. A stack of 12 glass RPCs of 1mx1m in area was developed to study and characterize the performance of the RPCs. In this paper, we describe the study carried out for the optimization of gas flow...
Miguel Morales
(Univ. Santiago de Compostela)
08/02/2012, 10:20
Ageing and interactions with materials
oral presentation
We have developed several prototypes of small size timing RPCs able to work with very small gas fluxes or even without any gas supply. Such detectors could be very useful for those purposes requiring a compact, easy to handle and easy to transport small detector offering at the same time sub-ns time resolution.
We have built several 2-gap tRPC chambers of glass, 160mm long and 50mm wide,...
Beatrice Mandelli
(CERN)
08/02/2012, 11:10
Ageing and interactions with materials
oral presentation
Resistive Plate Chambers (RPCs) are widely employed as muon trigger systems at the Large Hadron Collider (LHC) experiments. Their large detector volume and the use of a relatively expensive gas mixture make a closed-loop gas circulation unavoidable. The return gas of RPCs operated in conditions similar to the experimental background foreseen at LHC contains large amount of impurities...
Mr
AVINASH JOSHI
(ALPHA PNEUMATICS)
08/02/2012, 11:30
Ageing and interactions with materials
oral presentation
ABSTRACT
QUALITY ASSURANCE OF LARGE AREA RPC DETECTOR:TECHNIQUES FOR MEASUREMENT OF GAS LEAK RATE
AVINASH V. JOSHI(a), N.K.MONDAL(b), B.SATYANARAYANA(b), S.D.KALMANI(b),P.VERMA(b)
a Alpha Pneumatics ,Unit No. 24 , Digvijay Ind. Estate 1, Upvan , Thane 400602 (INDIA)
b DHEP,Tata Institute of Fundamental Research, Homi Bhabha Road , Colaba , Mumbai 400005 (INDIA)
...
Dr
Saikat Biswas
(GSI, Darmstadt)
08/02/2012, 11:50
Ageing and interactions with materials
oral presentation
During the last few years at SINP/VECC, significant work on the prototype silicone coated bakelite based resistive plate chamber (RPC) for the Iron Calorimeter (ICAL) of the proposed India-based Neutrino Observatory (INO) has been carried out. Bakelite RPC detectors of various sizes from 10 cm X 10 cm to 1 m X 1 m, with capacitive read-out strips made of 16-conductor ribbon cables, have been...
Prof.
Sung Keun Park
(Korea University)
08/02/2012, 12:10
Ageing and interactions with materials
oral presentation
The CMS collaboration intends to improve the muon trigger efficiency in the forward region.
In order to achieve this goal, 144 new Resistive Plate Chambers (RPCs) at RE4/2, RE4/3 will be installed on the existing york YE3 to trigger high momentum muons from the proton-proton interaction.
In this paper, we present the detailed procedures used in the production of the CMS RPC gas gaps...
