Sergej Schuwalow

10 September 2021

Dear friends and colleagues,

         It is with deep sorrow that we must let you know about the passing of Sergej Schuwalow. We lost a dear Colleague who made significant contributions to particle physics through his outstanding
         expertise in detectors.
         Sergej joined the FCAL collaboration in 2007, when we launched the EUDETprogram for the development of advanced detector technologies. Prior to FCAL, Sergej was a physicist in ITEP Moscow,
         and one of the responsible persons for the electromagnetic calorimeter designed and built by ITEP and INFN for the HERA-B experiment at DESY.

         In FCAL, Sergej contributed exceptionally all the time to the research in the development of electromagnetic calorimeters at small polar angles, based on his profound background in particle, and
         particularly detector physics.
         Sergey introduced emerging research directions in the development of radiation-hard sensors and contributed significantly to the deeper understanding of radiation damage mechanisms. Many of
         his ideas shaped the design of forwarding calorimeters for experiments at future colliders.
         Thanks to Sergej, several beam-test campaigns have been successfully carried out.

         The data recorded in these measurements became part of Ph.D. theses and were published in prestigious scientific journals.
         Students, young scientists, and even senior ones highly appreciated his advice in the daily research work.
         In the last years, Sergej extended his research activities also to hadron calorimeters within the CALICE group at DESY.

         Sergej was a highly respected member of the particle physics research community, always open for new ideas, did research with full dedication and with a collaborative spirit.
         He will be very much missed. Let his memory be blessed.

        condolences by: Aharon Levy Wolfgang Lohmann

Sergey was a highly valued, very skilled, and innovative colleague at
DESY. We will always remember him, and he will be sorely missed.
condolences by: Beate

Indeed very sad news.
Sergei was not only an expert in the field, but a dear colleague and a kind man.
He will be always remembered.
condolences by: Ivanka
on behalf of the VINCA Belgrade HEP Group

Very sad news.
I have always had so many questions/topics to ask or to discuss with Sergej...
condolences by: Marek

This is very sad to hear. Sergei was one of the first to befriend me in the
FCAL collaboration, during my association. A true loss of a great scientist
and a wonderful man.
condolences by: Bruce

Very sad news!
Indeed Sergei was an excellent professional,
unique, and open to new ideas person!
condolences by: Anton.

A very sad day, words cannot express the sadness of this news! Sergej was
a great scientist, but also a great human being.
May his soul rest in peace!
condolences by: Veta

This is very sad to hear. Sergei was one of the first to befriend me in the FCAL collaboration,
during my association. A true loss of a great scientist and a wonderful man.
condolences by: Bruce

It's hard to accept, that Sergej has left us.
Grief cannot be expressed in words.
condolences by: Misha

It's very sad news indeed. Sergey was a great scientist and a great person.
He helped me a lot and I was always very impressed by the way he solved problems.
condolences by: Konstantin

This is really sad news. I love his theory of why the universe has 3 spatial dimensions.
We'll miss him very much.
condolences by: Angel

I express my bitter sadness, that Sergej left so early and my condolences to his family, friends, and colleagues.
Sergey was really exceptional person with such a positive mindset. I will always remember his enthusiasm,
motivation to explore new thinks, desire to help, and talent to explain complicated thinks in simple words.
He was one of the kindest people I know and I’m glad I met him and had a chance to be educated and work
with him!
condolences by: Olena

Very sad, We lost a unique person.
May his memory be blessed.
condolences by: Ibtisam