Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Test Results of PIP2IT MEBT Vacuum Protection System   The central part of PIP-II program of upgrades pro-posed for the Fermilab
injection complex is an 800 MeV, 2 mA, CW-compatible SRF linac. Acceleration in
super-conducting cavities begins from a low energy of 2.1 MeV, so that the
first cryomodule, Half Wave Resonator (HWR) borders the warm Medium Beam
Transport (MEBT) line. To minimize the amount of gas that may enter the SRF
linac in a case if a vacuum failure occurs in the warm front end, a vacuum
protection system is envisioned to be used in the PIP-II MEBT. It features a
fast closing valve with two sensors and a differential pumping insert. The
system prototype was installed in the PIP-II Injector Test (PIP2IT) accelerator
and successfully tested in several modes modelling the vacuum failures. The
report presents the design of the vacuum protection system and results of its
tests.

30
The categories of this paper are: q-alg
25
The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
35
The categories of this paper are: mtrl-th
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
22
The categories of this paper are: chao-dyn
0
The categories of this paper are: hep-ph
18
The categories of this paper are: econ
4
The categories of this paper are: cond-mat
32
The categories of this paper are: atom-ph
16
The categories of this paper are: stat
5
The categories of this paper are: gr-qc
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
29
The categories of this paper are: funct-an