Technical Group Meeting

Monday 21 Nov 2022, 09:30 → 10:30 US/Eastern

1-s2.0-0168900294905916-main.pdf

9202322.pdf

IMG_20181120_152041.jpeg

IMG_20181120_152050.jpeg

NIM345_230.pdf

Three files are included 

 

1. Internal note LNGS-92-20   describes a possible signature for tau neutrinos in liquid argon. The idea is to spot a large rise of DEDX on a track to indicate a decay of the tau into multi-particle state.  

Francesco P.: The paper on the tau detection principle was published in the proceedings of the  International Conference on Calorimetry in High Energy Physics, Capri - 14-19 October 1991

1. NIM A346(1994)550    Printed circuit board realization of an anode from 1994.    Obviously, the DUNE vertical drift is on a printed circuit board, but the exact ideas are different.  

From Francesco P.:

The PCB in the paper Nucl. Instr. and Meth. A346 (1994) 550 is what we called the “reversed” multiplayer readout plane.
The induction plane is “behind” the collection: no holes are necessary in the PCB.
The induction strips are thick. The collection strips are thin.
The induction signals are due to the poor shielding of the collection strips: while the electrons approach the collection plane, the induction is “transferred” from the induction to the collection plane, where the electrons eventually end upon.  

 

Here are two photos of the readout PCB (it survived in our lab --without being lost-- for more than 25 years!): the pitch is 2mm.
 

1. NIM A345 (1994) 230.  Details the performance of a 3 ton prototype.  There are some interesting ideas here on how to extract tracks that are lose to each other using long integration times.  The point is that long integration times preserve all information on the pulse shape, and may be more useful in conjunction with rapid digitization.  

 

In the meeting we discussed next steps.  

 

Need to meet CERN transport group relatively soon to understand limitations on installations. 

 

For this a package of information and questions needs to be prepared.   This package for FLARE will be prepared for the next meeting. 

 

 

09:30 → 09:50 Summary from PBC and FPF5 Workshops

deroeck_FPF_discussion22_v4.pdf