Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: CALICE SiW ECAL -- Development and test of the chip-on-board PCB
  solution   The highly granular silicon-tungsten electromagnetic calorimeter (SiW ECAL)
is the reference design of the ECAL for the International Large Detector (ILD)
concept, one of the two detector concepts proposed for the future International
Linear Collider (ILC). Prototypes for this type of detector are developed
within the CALICE Collaboration. This contribution reports on the development
of an ultra-thin PCB called Chip-on-Board (COB) that is equipped with
wirebonded ASICs and pixelated silicon wafers. This set will form the basic
unit of detection of the SiW ECAL. It will favour the design of an ultra
compact calorimeter since these boards feature a thickness of 1.2 mm to be
compared with the 3 mm of the default solution variant using ASICs in BGA
packaging. We report also on the first results obtained with the COB boards on
a beam test at DESY.

17
The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
1
The categories of this paper are: cs
11
The categories of this paper are: hep-lat
27
The categories of this paper are: comp-gas
30
The categories of this paper are: q-alg
19
The categories of this paper are: eess
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
36
The categories of this paper are: cmp-lg
14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
7
The categories of this paper are: hep-th
18
The categories of this paper are: econ