Metrology Software:

NIST, ISO, GUM claim that a measurement is complete only when accompanied by an uncertainty statement. Spatial Analyzer (SA) Ultimate has been adopted as metrology software:

USMN algorithm combines different measurements from different measurement systems with advenced techniques to increase accuracy.

USMN algorithm can estimate uncertainty . It is GUM and ISO compliant

USMN algorithm estimates instrument uncertainty and verify instrument performance in the real environment.

Capability to fabricate measurements simulating instrument performance.

LIPAC, the IFMIF/EVEDA accelerator

LIPAc LIPAc, the Linear IFMIF Prototype Accelerator, will run in 2017:

Deuteron beam 9 MeV 125 mA in CW

will validate IFMIF’s (same current at 40 MeV). Alignment tolerance of ±0.1 mm are required to:

allow stand on maintenance, limiting beam losses up to 1 W/m to reduce component activation meet beam halo requirement

Measurement instrumentation:

Leica AT401 Laser Tracker:

MPE distance accuracy: ± 10 µm

MPE angular accuracy: ± (15 µm +6 µm/m)

Level accuracy: ± 1 arcsec

IFMIF

A fusion relevant neutron source is almost four decades long pending step for the successful development of fusion energy. In commercial fusion reactors, neutrons fluxes in the order of 1018 m-2s-1 with an energy of 14.1 MeV will occur, which will be absorbed in its first wall, undergoing potentially >15 dpaNRT per year of operation. This irradiation will degrade structural materials in an unknown manner.

IFMIF, the International Fusion Materials Irradiation Facility, will generate a neutron flux with a broad peak at 14 MeV by Li(d,xn) reactions thanks to two parallel deuteron accelerators colliding in a liquid Li screen. The energy of the beam (40 MeV) and the current of the parallel accelerators (2 x 125 mA) have been tuned to maximize the neutrons flux and reach irradiation conditions comparable to those in the first wall of a fusion reactor and will allow qualification and characterization of suitable materials.

Alignment of LIPAc, the IFMIF prototype high current deuteron accelerator: requirements and current status

F. Scantamburloa, L. Semerarob, A. Lo Bueb, L. Poncetb, P. Carab, J. Knastera, Y. Okumuraa, A. Kasugaic, H. Shidarac, T. Morishitac, H. Sakakic, M. Shingalaa, K. Tsutsumic

aIFMIF/EVEDA Project Team, Japan / bF4E / cJAEA

Injector alignment

The installation of the injector (source + LEBT) was completed in May 2014.

The alignement has been performed with Taylor Hobson telescope. The

references has been aligned to the beam line frame by AT401. Source and

LEBT were surveyed and fiducialized after their installation with uncertainty

less than 40 mm at 2s.

Upgrade of the network in June 2013

According to ITER metrology Handbook, a factor 5 should be guaranteed between tolerance and measurement uncertainty. A target uncertainty below 0.02 mm shall be guaranteed in the accelerator vault, quite at the limit of current available instrument performance.

Thermal expansion of the building

A procedure has been established to evaluate the thermal expansion of

the building and if needed to compensate the measurements.

8 available targets

SA existing network: SA simulated uncertainty 0.134 mm

SA new network simulations with 130 fiducials: ucert. < 0.02 mm

Upgrade of the nework and survey

USMN Measured Delta [mm] Scale factro to USMN alfa [m/°C] T floor Average [°C] Temp. [°C] Nom. Dist. [mm] Meas. Dist. [mm]

2014.05.02 23562.744 23562.107 -0.637 0.999973 13.2 13 800.001 800.005 14.32014.05.08 23562.744 23562.184 -0.56 0.999976 5.1598E-06 13.8 13.5 800.001 800.007 14.8

2014.05.20 23562.744 23562.37 -0.374 0.999984 7.572E-06 14.6 14.7 800.005 800.014 16.5

2014.07.09 23562.744 23562.986 0.242 1.000010 5.91284E-06 19.5 19.7 800.009 800.015 20.8

2014.07.24 23562.744 23563.151 0.407 1.000017 5.90107E-06 20.7 21.3 800.01 800.008 22.2

2014.08.01 23562.744 23563.332 0.588 1.000025 5.99452E-06 21.8 22 800.01 800.015 23.2

2014.09.30 23562.744 23563.595 0.851 1.000036 5.81084E-06 24.0 23.9 800.012 800.01 25.3

Scale barDate T air [°C]

FL1-FL48 Dist [mm]

Network update