IIB 
115TH CONGRESS 
2D SESSION 
H. R. 4376 
IN THE SENATE OF THE UNITED STATES 
FEBRUARY 14, 2018 
Received; read twice and referred to the Committee on Energy and Natural 
Resources 
AN ACT 
To direct the Secretary of Energy to carry out certain up-
grades to research equipment and the construction of 
a research user facility, and for other purposes. 
Be it enacted by the Senate and House of Representa-
tives of the United States of America in Congress assembled, 
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SECTION 1. SHORT TITLE. 
This Act may be cited as the ‘‘Department of Energy 
Research Infrastructure Act of 2018’’. 
SEC. 2. ADVANCED LIGHT SOURCE UPGRADE. 
(a) IN GENERAL.—The Secretary of Energy shall 
provide for the upgrade to the Advanced Light Source de-
scribed in the publication approved by the Basic Energy 
Sciences Advisory Committee on June 9, 2016, titled ‘‘Re-
port on Facility Upgrades’’, including the development of 
a multi-bend achromat lattice to produce a high flux of 
coherent x-rays within the soft x-ray energy region. 
(b) DEFINITIONS.—In this section: 
(1) FLUX.—The term ‘‘flux’’ means the rate of 
flow of photons. 
(2) SOFT X-RAY.—The term ‘‘soft x-ray’’ means 
a photon with energy in the range from 50 to 2,000 
electron volts. 
(c) START OF OPERATIONS.—The Secretary shall, to 
the maximum extent practicable, ensure that the start of 
full operations of the upgrade under this section occurs 
before December 31, 2026. 
(d) FUNDING.—There are authorized to be appro-
priated to the Secretary for the Office of Science to carry 
out to completion the upgrade under this section— 
(1) $20,000,000 for fiscal year 2018; 
(2) $50,000,000 for fiscal year 2019; 
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(3) $80,000,000 for fiscal year 2020; 
(4) $80,000,000 for fiscal year 2021; 
(5) $52,000,000 for fiscal year 2022; 
(6) $22,000,000 for fiscal year 2023; and 
(7) $6,000,000 for fiscal year 2024. 
SEC. 3. LINAC COHERENT LIGHT SOURCE II HIGH ENERGY 
UPGRADE. 
(a) IN GENERAL.—The Secretary of Energy shall 
provide for the upgrade to the Linac Coherent Light 
Source II facility described in the publication approved by 
the Basic Energy Sciences Advisory Committee on June 
9, 2016, titled ‘‘Report on Facility Upgrades’’, including 
the development of experimental capabilities for high en-
ergy x-rays to reveal fundamental scientific discoveries. 
The Secretary shall ensure the upgrade under this section 
enables the production and use of high energy, ultra-short 
pulse x-rays delivered at a high repetition rate. 
(b) DEFINITIONS.—In this section: 
(1) HIGH ENERGY X-RAY.—The term a ‘‘high 
energy x-ray’’ means a photon with an energy at or 
exceeding 12 kiloelectron volts. 
(2) HIGH REPETITION RATE.—The term ‘‘high 
repetition rate’’ means the delivery of x-ray pulses 
up to one million pulses per second. 
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(3) ULTRA-SHORT PULSE X-RAYS.—The term 
‘‘ultra-short pulse x-rays’’ means x-ray bursts capa-
ble of durations of less than 100 femtoseconds. 
(c) START OF OPERATIONS.—The Secretary shall, to 
the maximum extent practicable, ensure that the start of 
full operations of the upgrade under this section occurs 
before December 31, 2025. 
(d) FUNDING.—There are authorized to be appro-
priated to the Secretary for the Office of Science to carry 
out to completion the upgrade under this section— 
(1) $20,000,000 for fiscal year 2018; 
(2) $55,000,000 for fiscal year 2019; 
(3) $80,000,000 for fiscal year 2020; 
(4) $80,000,000 for fiscal year 2021; 
(5) $54,000,000 for fiscal year 2022; and 
(6) $31,000,000 for fiscal year 2023. 
SEC. 4. FACILITY FOR RARE ISOTOPE BEAMS. 
(a) IN GENERAL.—The Secretary of Energy shall 
provide for a Facility for Rare Isotope Beams to advance 
the understanding of rare nuclear isotopes and the evo-
lution of the cosmos. 
(b) FACILITY CAPABILITIES.—In carrying out sub-
section (a), the Secretary shall ensure that the user facility 
will provide, at a minimum, the following: 
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(1) A rare isotope beam facility capable of 400 
kW of beam power. 
(2) Scientific instruments, which may include a 
gamma-ray energy tracking array, a particle spec-
trometer with high rigidity, and a beta-decay detec-
tion system. 
(c) START OF OPERATIONS.—The Secretary shall, to 
the maximum extent practicable, ensure that the start of 
full operations of the facility under this section occurs be-
fore June 30, 2022, with early operation in 2018. 
(d) FUNDING.—There are authorized to be appro-
priated to the Secretary for the Office of Science to carry 
out to completion the construction of the facility under 
this section— 
(1) $101,200,000 for fiscal year 2018; 
(2) $86,000,000 for fiscal year 2019; 
(3) $64,000,000 for fiscal year 2020; 
(4) $36,300,000 for fiscal year 2021; 
(5) $24,000,000 for fiscal year 2022; 
(6) $15,000,000 for fiscal year 2023; and 
(7) $15,000,000 for fiscal year 2024. 
SEC. 5. SPENDING LIMITATION. 
No additional funds are authorized to be appro-
priated to carry out this Act and the amendments made 
by this Act, and this Act and such amendments shall be 
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