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Call for Your Participation to 1st CERF-ICCHIBAN

Dear ICCHIBAN Participant,

The ICCHIBAN Working Group is pleased to invite you to participate in the CERF ICCHIBAN experiment. As most of you already know, CERF (the CERN/EU Reference Field) is a high energy neutron facility at CERN that simulates the neutron field encountered aboard LEO spacecraft like the ISS and in the atmosphere at ~20 km altitude. Michael Hajek of the Atomic Institute of the Austrian Universities, Vienna, Austria, Thomas Berger of the German Aerospace Center (DLR), Koln, Germany, and Hisashi Kitamura of the National Institute of Radiological Sciences, Chiba, Japan, are serving as the coordinators for this experiment. We are expecting to get 16 hours of beamtime at CERF between 12 and 16 June 2006.

For reasons of radiation protection, the maximum dose rate for exposures atop the concrete exposure platform at CERF has been officially restricted to ~400 ╬╝Sv/h (4000 PIC), thus limiting the overall accumulated dose to ~6 mSv. We are currently negotiating with the local organizers and might be able to increase the beam intensity during the night session.

The CERF ICCHIBAN is primarily intended for passive dosimeters. Because of the short time available prior to the CERF ICCHIBAN experiment and difficulties in running data and power cables from the control area to the CERF exposure platform, it is unlikely that we will be able to accomodate any active detectors. The exception will be active detectors that are battery powered and completely self contained (e.g. Liulin-4).

We are requesting that each participating laboratory provide four passive dosimeter packages for exposure and one control package (total of 5 dosimeter packages). These dosimeter packages should be similar to those you have exposed during previous ICCHIBAN experiments. Passive detector packages should be sent by express mail directly to Thomas Berger at DLR:

Dr. Thomas Berger
German Aerospace Center (DLR)
Institute of Aerospace Medicine / Radiobiology

Please confirm your participation as soon as possible by email to Thomas Berger and/or Michael Hajek, and send your packages so that they arrive at DLR before 5 June 2006. Thomas Berger, Michael Hajek, and Hisahsi Kitamura will expose your dosimeters and then return them to you by express mail.

We are looking forward to your participation.


Yukio Uchihori, Nakahiro Yasuda, Eric Benton, Michael Hajek, Thomas Berger, and Hisashi Kitamura

Eric Benton
Eril Research, Inc.