Dear Jerry and Wataru,
please find below two abstract that I have just submitted to CHEF19 and
LCWS19.
Cheers,
Roman
CALICE SiW ECAL - Development and first beam test results of detection
elements using Chip-on-Board Technology
A highly granular silicon-tungsten electromagnetic calorimeter
(SiW-ECAL) is the reference design of the ECAL for International Large
Detector (ILD) concept, one of the two detector concepts for the
detector(s) at the future International Linear Collider. Prototypes for
this type of detector are developed within the CALICE Collaboration.
The contribution will report for the first time on the development of a
and beam test results obtained with detection elements (ASU. combination
of ASIC, PCB and Si Wafers) that are based on a PCB type, called
Chip-on-Board (COB), that features wirebonded ASICs. This latter design
allows to keep the height of the PCB as thin as 1.2\,mm compared to a
height of aabout 3mm for a variant using BGA packaging. The tight space
constraints leave little room for extra components such as decoupling
capacitances such that particular emphasis will be put on the
performance in terms of noise sensitivity.
CALICE SiW ECAL - Development and performance of a highly compact
digital readout system
A highly granular silicon-tungsten electromagnetic calorimeter
(SiW-ECAL) is the reference design of the ECAL for International Large
Detector (ILD) concept, one of the two detector concepts for the
detector(s) at the future International Linear Collider. Prototypes for
this type of detector are developed within the CALICE Collaboration.
During the last year a highly compact digitial read out card, called
SL-Board, has become available. The SL-Board combines data acquisition,
power regulation and signal buffering for up to 10000 readout channels
on a surface as small as $18\times4\,{\rm cm^2}$. With this size the
systems complies with space constraints in modern particle physics
detectors such as ILD. The SL-Board can be readout by a regular computer
USB interface via a FTDI Module or through dedicated module, called CORE
Module, via a custom developed PCB using UART. The CORE module delivers
also the clock and fast commands and synchronises the SL-Boards. The
CORE Module acts also as a data concentrator since it receives input
from up to 15 calorimeter layers. The entire system SL-Board CORE Module
is designed for a data throughput of up to 80\,MBit/s.
The system has been used for the first time in a beam test in Summer
2019 at DESY. The contribution will summarise the main features of the
system and report on its performance during the beam test
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