Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: AMS02 Ecal gamma trigger performance measured at the October 2004 CERN
  test beam   Test beam data collected in October 2004 at CERN PS to validate the AMS02
Ecal Intermediate Board (EIB) are analyzed. After describing the experimental
setup and the event samples, results concerning noise measurement, trigger
efficiency and threshold accuracy are presented. They demonstrate that the EIB
fulfils the physics requirements. Therefore the analog part of the trigger is
validated, and hardware choices are also made towards the final device.

7
The categories of this paper are: hep-th
8
The categories of this paper are: hep-ex
14
The categories of this paper are: math-ph
10
The categories of this paper are: q-bio
34
The categories of this paper are: chem-ph
11
The categories of this paper are: hep-lat
12
The categories of this paper are: nucl-th
21
The categories of this paper are: adap-org
37
The categories of this paper are: supr-con
15
The categories of this paper are: nucl-ex
32
The categories of this paper are: atom-ph
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
5
The categories of this paper are: gr-qc
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas