PR98 Profile Database Variable List

**PR98 COMMENTS Variables**
0D Variable	Units	Data Type	Brief Description	Full Description
Tokamak:	TOKAMAK	String	tokamak name	tokamak name
Pulse number:	SHOT	String	shot number	shot number
Contact person:	CONTACT	String	contact person at the experiment	contact person at the experiment
Institution:	INSTITUTION	String	institution	institution
Date of shot:	SHOT_DATE	String	date of shot	date of shot
Analysis code(s):	ANAL_CODES	String	codes used for data analysis	codes used for data analysis
Run number:	RUN_NUMBER	String	run number	run number
Date of analysis:	ANAL_DATES	String	date of analysis	date of analysis
Assumptions:	ASSUMPTION	String	main assumptions made in the analysis	main assumptions made in the analysis
Shot description:	DESCRIPTION	String	summary of useful information describing the shot and giving the purpose of the experiment	summary of useful information describing the shot and giving the purpose of the experiment
Publication:	PUBLICATION	String	publication	publication
Additional:	ADDITIONAL	String	any additional information	any additional information

PR98 0D Variables

0D Variable

Units

Data Type

Brief Description

Full Description

TOK

String

tokamak

This variable designates which tokamak has supplied the data. For example: ASDEX, D3D, JET, JFT2M, PBXM... (10 ASCII characters).

UPDATE

Integer

last update YYYYMMDD

The date of the most recent update for any variable listed in the database. The format is YYYYMMDD (Year-Month-Day).

DATE

Integer

shot date YYYYMMDD

The date the shot was taken. The format is YYYYMMDD.

SHOT

String

shot #

The shot from which the data are taken.

TIME

Real

time

Time during the shot at which the data are taken in seconds.

AUXHEAT

String

auxiliary heating type

Type of auxiliary heating. Possible values are:

NONE:	No Auxiliary heating
NB:	Neutral Beam Injection
IC:	Ion Cyclotron Resonance Heating
EC:	Electron Cyclotron Resonance Heating
NBIC:	Combined NBI + ICRH
LH:	Lower hybrid
IBW:	Ion Bernstein Waves.

PHASE

String

plasma phase

The phase of the discharge at TIME. Possible values are:

OHM :	Ohmic
L :	L-mode
LHLHL :	H-mode with frequent L H transitions
H :	ELM-free H-mode
HSELM :	H-mode with small ELMs
HGELM :	H-mode with large ELMs
HGELMH :	H-mode with high frequency large ELMs
VH :	VH-mode
PEP :	PEP mode

STATE

String

plasma state ('STEADY' or 'TRANS')

Description of the plasma state for the present time slice:

STEADY :	All global paramaters are in steady state
TRANS :	At least one parameter is evolving

PGASA

amu

Integer

mass number of main gas

Mass number of the plasma working gas. Possible values are: 1 (Hydrogen), 2 (Deuterium), 3 (³H_e) or 4 (⁴H_e).

PGASZ

Integer

charge number of main gas

Charge number of the plasma working gas. Possible values are: 1 (Hydrogen or Deuterium) or 2 (Helium).

BGASA

amu

Integer

mass number of beam gas

Mass number of the neutral beam gas. Possible values are: 1 (Hydrogen), 2 (Deuterium), 3 (³H_e) or 4 (⁴H_e).

BGASZ

Integer

charge number of beam gas

Charge number of the neutral beam gas. Possible values are: 1 (Hydrogen or Deuterium) or 2 (Helium).

BGASA2

amu

Integer

mass number of 2nd beam gas (JET)

Mass number of the second neutral beam gas (JET only). Possible values are: 1 (Hydrogen), 2 (Deuterium), 3(³H_e) or 4 (⁴H_e).

BGASZ2

Integer

charge number of 2nd beam gas (JET)

Charge number of the second neutral beam gas (JET only). Possible values are: 1 (Hydrogen or Deuterium) or 2 (Helium).

PIMPA

amu

Integer

mass number of main impurity

Mass number of the plasma main impurity. Possible values are: 8 (Beryllium), 10 (Boron), 12 (C), etc ...

PIMPZ

Integer

charge number of main impurity

Charge number of the plasma main impurity. Possible values are: 4 (Beryllium), 5 (Boron), 6(C), etc ...

PELLET

String

pellet material

Pellet material if a pellet(s) has been injected. Possible values are:

NONE :	No pellets
H :	Hydrogen pellet(s)
D:	Deuterium pellet(s)
LI:	Lithium pellet(s)

If at least one pellet is injected, a pellet table in a separate file must be provided for additional details.
A pellet table format is as follows:

Time (s)	#Particles (10¹⁹)	Speed (km/s)	Composition
10.3	145	1.2	LI

RGEO

Real

geometric axis

The plasma geometrical major radius in meters, from an MHD equilibrium fit, defined as the average of the minimum and the maximum radial extent of the plasma at the elevation of the magnetic axis.
Normal level of accuracy is ASDEX (± 0.5%), D3D (± 0.6%) JET (± 1%), JFT2M (± 0.75%), PBXM (± 0.65%), PDX (± 0.75%).

RMAG

Real

magnetic axis

The major radius of the magnetic axis in meters from an MHD equilibrium fit or a formula based on a number of equilibria (ASDEX).
Normal level of accuracy is ASDEX (± 0.5%), D3D (± 1%), JET (± 2%), JFT2M (±2%), PBXM (± 1%), PDX (± 4%).

AMIN

Real

minor radius

The horizontal plasma minor radius in meters from an MHD equilibrium fit or a formula based on a number of equilibria (ASDEX).
Normal level of accuracy is ASDEX (± 1%), D3D (± 0.5%), JET (± 3%), JFT2M (± 3%), PBXM (± 3%), PDX (± 3%).

SEPLIM

Real

minimum separation between separatrix and limiter/wall

The minimum distance between the separatrix flux surface and either the vessel wall or limiters in meters from an MHD equilibrium fit or a formula based on a number of equilibria (ASDEX).
Normal level of accuracy is ASDEX (± 1 cm), D3D (± 0.5 cm), JET (± 1 cm), JFT2M (± 1 cm), PBXM (± 0.5 cm), PDX (± 1 cm).

XPLIM

Real

minimum separation between Xpoint and limiter/wall

The minimum distance between the X-point and either the vessel walls or limiters in meters from an MHD equilibrium fit. The value is positive if X-point is inside either the vessel wall or limiters.
Normal level of accuracy is ASDEX (Na), D3D (± 3 cm), JET (± 5 cm), JFT2M (± 3 cm), PBXM (± 5 cm), PDX (± 5 cm).

KAPPA

Real

plasma elongation

The plasma elongation determined from an MHD equilibrium fit or a formula based on a number of equilibria (ASDEX). Normal level of accuracy is ASDEX (± 1%), D3D (± 1%), JET (± 5%), JFT2M (± 10%), PBXM (± 10%), PDX (k = 1 for all records, ± 10%).

DELTA

Real

triangularity

The triangularity of the plasma boundary from an MHD equilibrium fit.
Normal level of accuracy is ASDEX (Na), D3D (± 10%), JET (±10%), JFT2M (± 10%), PBXM (± 25%), PDX (Na).

INDENT

Real

indentation

Indentation of the plasma determined from an MHD equilibrium fit.
Normal level of accuracy is ASDEX (Na), D3D (Na), JET (Na), JFT2M (Na), PBXM (± 15%), PDX (Na).

AREA

m^2

Real

poloidal cross sectional area

Area of plasma cross section in m²determined from an MHD equilibrium fit or a formula based on a number of equilibria (ASDEX).
Normal level of accuracy is ASDEX (± 3%), D3D (± 3%),JET (± 6%), JFT2M (± 5%), PBXM (± 10%), PDX (±5%).

VOL

m^3

Real

plasma volume

The plasmas volume in m³ determined from an MHD equilibrium fit or a formula based on a number of equilibria (ASDEX).
Normal level of accuracy is ASDEX (± 3%), D3D (± 3%),JET (± 6%), JFT2M (± 5%), PBXM (± 10%), PDX (±5%).

CONFIG

String

limiter/divertor configuration

The plasma configuration. Possible values are: SN for single null, DN for double null, IW for inner wall or TOP,BOT, OUT, IN for a limiter.

ASDEX:	DN if vertical shift DZis less than 5 mm, otherwise SN.
D3D:	DN if two nulls and the separatrix flux surface are inside the divertor tiles and on the same flux surface within 0.25 cm.
JET:	Determined by operation session leader.
JFT2M:	DN if two nulls are inside the limiter.
PBXM:	Only DN
PDX:	Only SN

IGRADB

Integer

ion gradB drift towards/away (1/-1) from Xpoint

Indicates when CONFIG = SN whether the ion gradB-drift is towards (1) or pointing away from (-1) the X-point.

WALMAT

String

wall material

The material of the vessel wall. Possible values are: SS for stainless steel, IN for inconel, IN/C for Inconel with carbon, or CSS for (partly) Carbon on stainless steel.

DIVMAT

String

divertor material

The material of the divertor tiles. Possible values are: SS for stainless steel, C or CC for carbon, TI1 or TI2 for titanium, BE for beryllium or C/BE for carbon at the top and beryllium at the bottom.

LIMMAT

String

limiter material

The material of the limiters. Possible valuesare: BE for beryllium or C for carbon.

EVAP

String

evaporated wall conditioning material

The evaporated material used to cover the inside of the vessel. Possible values are: BOROA (B₂H₆ + CH₄ + H₂) or BOROB (B₂H₆ + H₂) BOROC (B₂D₆ + He) for boron, CARB or CARBH (CH₄ + D₂) for carbon, TI for titanium, BE for beryllium or NONE for no evaporation.

Real

vacuum toroidal magnetic field at geometric axis

The vacuum toroidal magnetic field in Tesla at RGEO determined from the TF coil current. Negative values for JET indicate operation with reversed toroidal field.
Normal level of accuracy is ± 1% for all machines.

Real

plasma current

The plasma current in amperes determined from an external Rogowski loop with vessel current subtraction. Normally negative values for JET. Positive values for JET indicate operation with reversed current.
Normal level of accuracy is ASDEX (± 2%), D3D (± 1%),JET (± 1%), JFT2M (± 1%), PBXM (±1%), PDX (± 1%).

VSURF

Real

loop voltage

The loop voltage at the plasma boundary in volts.
Normal level of accuracy is ASDEX (± 5%), D3D (Na),JET (± 5%), JFT2M (± 5%), PBXM (±50%), PDX (± 10%).

Q95

Real

safety factor at 95% poloidal flux

The plasma safety factor from an MHD equilibrium fit evaluated at the flux surface that encloses 95% of the total poloidal flux. For ASDEX Q95 = q_cyl(1 + (AMIN/RGEO)² (1 + 0.5 BEILI2²)) with q_cyl = 10⁷ (BT/IP) (AMIN²/RGEO) (1 + KAPPA²)/2.
Normal level of accuracy is ASDEX (± 15%), D3D (± 3%),JET (± 10%), JFT2M (± 10%) PBXM(±10%), PDX (± 10%).

BEPMHD

Real

poloidal beta

Poloidal beta computed from the MHD equilibrium fit. For ASDEX BEPMHD equals BEIMHD.
Normal level of accuracy is ASDEX (± 15%), D3D (± .05), JET (Na), JFT2M (± 15%), PBXM (± 20%),PDX (± 20%).

BETMHD

Real

toroidal beta

Toroidal beta computed from the MHD equilibrium fit.
Normal level of accuracy is ASDEX (± 18%), D3D (±0.05/b_?),JET (± 12%), JFT2M (± 15%), PBXM (±20%), PDX (± 20%).

BEPDIA

Real

poloidal beta from diamagnetic loop

Corrected poloidal diamagnetic beta for ASDEX from diamagnetic coils averaged over the 3 ohmic points in the database, (± 15%). D3D, JET, JFT2M, PBXM, PDX: Na.

NEL

m^-3

Real

central line averaged electron density

Central line average electron density in m^-3 from interferometer.
For JET NEL has been approximated by:
ohmic: NEL ~ exp {2.931 +0.873 log (NEV) + 0.064 log (NEØ)}
H-mode: NEL ~ exp {3.745 +0.825 log (NEV) + 0.092 log (NEØ)} If no measurement is available, the variable NELFORM indicates if NEL is measured or approximated.
Normal level of accuracy is ASDEX (± 2%), D3D (± 2 x 10¹⁸ m^-3), JET (± 8%), JFT2M (± 2%), PBXM (± 5%), PDX (± 5%).

DNELDT

m^-3/s

Real

time derivative of central line averaged electron density

The time rate of change of NEL in m^-3/s.
Normal level of accuracy is similar to NEL.

ZEFF

Real

line averaged effective charge

Line average plasma effective charge determined from visible bremsstrahlung.
Normal level of accuracy is ASDEX (± 10%), D3D (± 20%), JET (± 30%). JFT2M, PBXM, PDX: Na.

PRAD

Real

radiated power

Total radiated power in watts as measured by Bolometer.
Normal level of accuracy is ASDEX (± 20%), D3D (± 15%), JET (± 10 15%), JFT2M (± 10 - 20%), PBXM (± < 25%), PDX (Na).

POHM

Real

Ohmic power

Total ohmic power in watts.

ASDEX:	Determined from max {0, VSURF*IP}, (Ohmic: ± 5% H: ± 50%).
D3D:	Calculated using CB₁₀I_p²RGEO²/(W_Tn_e). B₁₀ is the central visible bremsstrahlung signal. When n_eis determined from the radial (vertical) CO₂chord, C is equal to 1.0310^-19 (9.9210^-20) (± 15%).
JET:	Corrected for inductance effects (± 20%).
JFT2M:	Calculated as VSURF*IP (± 10%).
PBXM:	Calculated as VSURF*IP (± 50%).
PDX:	Calculated using VSURF and IP corrected for inductance effects (± 20%).

ENBI

Real

neutral beam energy

Neutral beam energy weighted by power in volts. This quantity is calculated from &sum E_iP_i/&sum P_i where E_i is the beam energy for source i and P_i is the beam power for source i. For ASDEX the primary energy component is given.
Normal level of accuracy is ASDEX (± 0.2 KV),D3D (± 10%), JET (± 12%), JFT2M (±5%), PBXM (± 15%), PDX (± 15%).

PINJ

Real

power injected by main neutral beam

The injected neutral beam power with beam of (BGASA, BGASZ) that passes into the torus in watts. Zero if no beams are on. Notice total injected neutral beam power is PINJ + PINJ2.
Normal level of accuracy is ASDEX (± 10%), D3D (± 10%), JET (± 6%), JFT2M (± 5%), PBXM (±5%), PDX (± 10%).

BSOURCE

Integer

main beam power fractions F1*10000+F2*100+F3 (F1 F2 F3 all to nearest %)

The power fractions injected by neutral beam eg P₁ = 80%, P₂= 10% and P₃= 10% then BSOURCE = 801010.

PINJ2

Real

power injected by auxiliary neutral beam

The injected neutral beam power from a second source with beam of (BGASA2, BGASZ2) in watts (JET only). Zero if no beams of second source are on.
Normal level of accuracy is JET (± 6%). ASDEX, D3D, JFT2M, PBXM, PDX: Na.

BSOURCE2

Integer

auxiliary beam power fractions F1*10000+F2*100+F3 (F1 F2 F3 all to nearest %)

The power fractions injected by neutral beam with the second source (JET only). For 89-90 data the possibilities for BSOURCE and BSOURCE2 are 781606 for 80kV D, 652114 for 140kV D, 990000 for ³H_e or ⁴H_e beams.

COCTR

Real

fraction of beam power co-injected

Fraction of beam power co-injected as compared to the total beam power injected.

PNBI

Real

total injected beam power minus shine through

Total injected neutral beam power minus shine through in watts. Zero if no beams are on.
Normal level of accuracy is ASDEX (± 10%),D3D (± 10%), JET (± 10%), JFT2M (<± 10%), PBXM (± 10%), PDX (± 10%).

ECHFREQ

Real

ECH frequency

ECH frequency in Hz

ECHMODE

String

mode of ECH waves

Mode of ECH waves, O is ordinary and X is extraordinary.

ECHLOC

String

ECH launch location

Location of ECH launch, IN identifies waves launched from the high field side or inside of the vessel and OUT is from the low field side.

PECH

Real

ECH power coupling to plasma

ECH power in watts coupled to the plasma. Zero if no ECH is applied.
Normal level of accuracy is D3D (± 10%). ASDEX, JET, JFT2M,PBXM, PDX: Na.

ICFREQ

Real

ICRH frequency

Frequency of ICRH waves in Hz.

ICSCHEME

String

ICRH heating scheme

ICRH heating scheme. Possible Values: HMIN for H minority, HE3MIN for ³He minority or H2NDHARM for 2nd harmonic H heating respectively.

ICANTEN

String

ICRH antenna phasing

Antenna phasing. Possible Values are DIPOLE or MONOPOLE.

PICRH

Real

ICRH power coupling to plasma

ICRH power in watts coupled to the plasma. Zero if no ICRH is applied.
Normal level of accuracy is JET (± 10%). ASDEX, D3D, JFT2M, PBXM, PDX: Na.

LHFREQ

Real

LH frequency

Frequency of LH waves in Hz.

LHNPAR

Real

LH parallel mode number

LH parallel mode number.

PLH

Real

LH power coupling to plasma

LH power in watts coupled to the plasma. Zero if no LH is applied.

IBWFREQ

Real

IBW frequency

Frequency of IBW in Hz.

PIBW

Real

IBW power coupling to plasma

IBW power in watts coupled to the plasma. Zero if no IBW is applied.

TE0

Real

central Te

The electron temperature at the magnetic axis in eV.

ASDEX:	From 16 radial YAG measurements under the same profile assumptions as for TEV (± 10%).
D3D:	Determined by a spline temperature profile fit to the Thomson scattering data (± 10%).
JET:	From ECE temperature profile (± 10%).
JFT2M, PBXM, PDX:	Na.

TI0

Real

central Ti

The ion temperature at the magnetic axis in eV.

D3D:	Determined by a spline temperature profile fit to the charge exchange recombination data (± 10%).
JET:	From Crystal X-ray diagnostic (±10%) or from charge exchange recombination spectroscopy (± 10%).
ASDEX, JFT2M, PBXM, PDX:	Na.

WFANI

Real

fraction of fast ion energy in perpendicular direction

Estimate of fraction of perpendicular fast ion energy as compared to the totalfast ion energy due to NBI.
If WFPER and WFPAR are available WFANI = WFPER/(WFPER + WFPAR), otherwise:

ASDEX:	From regression analysis based on 176 FREYA runs: C NEL^0.04(NE0(ZEFF-1))^0.045/ENBI^0.14 for H beam and C'NEL^0.12(NE0(ZEFF-1))^0.020/ENBI^0.14 for D beam where C and C' are estimated constants depending on the target gas. Missing central densities are interpolated by regression of the available central densities in the database against IP, BT, NEL, NEV, EVAP and PINJ. If not measured, ZEFF is assumed to be 3 for EVAP=NONE, 2.5 for carbonised shots and 1.5 for boronised shots.
D3D:	The fast ion anisotropy is calculated only from geometry; the angles of the beam center line are known relative to the geometric axis of the tokamak and from this the perpendicular and parallel components can be determined.
JET:	1.16*10^-2NEL^0.11/ENBI^0.07.

Normal level of accuracy is ASDEX (± 7%), D3D (± 50%),JET (± 50%), JFT2M, PBXM, PDX: Co.

WFICRH

Real

perpendicular fast ion energy content during ICRH

Estimate of the perpendicular fast ion energy content during ICRH heating in Joules. It is given by 4/3 (DWDIA - DWMHD), where DWDIA and DWMHD is the increase in energy due to ICRH. Zero if no ICRH.
Normal level of accuracy is JET (± 50%). ASDEX, D3D, JFT2M, PBXM, PDX: Na

MEFF

amu

Real

effective atomic mass number

Effective atomic mass in AMU.
= 0.5 (PGASA + 0.5 (BGASA + BGASA2)) if PINJ > 0 and PINJ2 > 0.
= 0.5 (PGASA + BGASA) if only PINJ > 0.
= PGASA otherwise
(A few ohmic observations from JET have PABS<3 kW. For these observations MEFF = PGASA).

ISEQ

String

parameter scan identifier

Parameter scan identifier
Possible options for ASDEX are:

ISEQ	Explanation
NONE	No particular scan
G1	Comparison shots for Helium program
NE1	Density variation
HT1	Search for high confinement times
EF11	Search for long ELM-free periods
SP11	Spectroscopic investigations
HBE1	High beta investigations, T_i profile measurements
HBE2	High beta investigations, T_i profile measurements
HBE3	High beta investigations, T_i profile measurements
P1	PNBI scan
P2	PNBI scan
QC1P3	QCYL and PNBI scan
BT1	BT scan
BT2 P4	BT and PNBI scan
BT3	BT scan
BT4	BT scan
BT5	BT scan
BT6	BT scan
BT7	BT scan

Possible options for JFT2M are:

ISEQ	Explanation
NONE	No particular scan
AM1	AMIN scan with Ip = 0.22MA (same Q95)
IP1	1st Ip scan with Bt = 1.25T
IP2	2nd Ip scan (Hydrogen)
IP3	3rd Ip scan (Deuterium)
BS1	Scan of 801010 (CO or CTR) and 603010 (CO or CTR)
BT1	Bt scan with Ip = 0.16MA
BT2	Bt scan with Ip = 0.21MA
EB1	ENBI scan with BSOURCE = 603010
EB2	ENBI scan with BSOURCE = 801010
G1	Intense gas puff for comparison with H pellet H mode
G2	Intense gas puff for comparison with D pellet H mode
G3IP2	2nd Ip scan (Hydrogen) with intense gas puffing
G4IP3	3rd Ip scan (Deuterium) with intense gas puffing
IE1	IEML and PNBI scan looking for steady state H mode region
P1	PNBI scan by CO or CTR with Ip = 0.25MA
P2	PNBI scan by CO + CTR with Ip = 0.24MA
P3IP4NE1	PNBI , IP and NEL scan in Hydrogen plasma
P4IP5NE2	PNBI , IP and NEL scan in Deuterium plasma
PE1	Hydrogen pellet into Hydrogen plasma
PE2	Deuterium pellet into Deuterium plasma
XP1	XPLIM scan with Ip = 0.24MA

No options available for D3D, JET, PBXM and PDX.

WTH

Real

thermal plasma energy content

Estimated thermal plasma energy content in Joules.
ASDEX: WTH = WDIA - 1.5*WFANI*WFFORM.
D3D: WTH = WMHD - WFFORM.
JET: WTH = WDIA - 1.5 (WFPER + WFICRH). If WFPER is missing WFPER is replaced by WFANI* WFFORM.
JFT2M: WTH = WDIA/3 + 2*WMHD/3 - WFFORM.
PBXM: WTH = WMHD - 0.75*WFPER - 1.5*WFPAR.
PDX: WTH = WMHD - 0.75*WFPER - 1.5*WFPAR.
ASDEX, D3D, JET, JFT2M, PBXM, PDX: Co.

WTOT

Real

total plasma energy content

Estimated total plasma energy content in Joules.
ASDEX: WTOT = WTH + WFFORM.
D3D: WTOT = WMHD
JET: WTOT = WTH + WFPER + WFPAR + WFICRH.
If WFPER and WFPAR are missing they are replaced by WFFORM.
JFT2M: WTOT = WTH + WFFORM
PBXM: WTOT = WTH + WFPER + WFPAR
PDX: WTOT = WTH + WFPER + WFPAR
ASDEX, D3D, JET, JFT2M, PBXM, PDX: Co.

DWTOT

Js^-1

Real

time derivative of total plasma energy content

Time rate of change of WTOT in Joules / s .

Real

uncorrected loss power

Estimated Loss Power not corrected for charge exchange and unconfined orbit losses in watts.
ASDEX: PL = POHM + PNBI - DWDIA/3 - 2*DWMHD/3
D3D: PL = POHM + PNBI + PECH - DWMHD
JET: PL = POHM + PNBI + PICRH - DWDIA
JFT2M: PL = POHM + PNBI - DWDIA
PBXM: PL = POHM + PNBI - DWMHD
PDX: PL = POHM + PNBI - DWMHD
ASDEX, D3D, JET, JFT2M, PBXM, PDX: Co.

PLTH

Real

loss power with correction for cx and orbit losses

Estimated Loss Power corrected for charge exchange and unconfined orbit losses in Watts, i.e. PLTH = PL - PFLOSS.
ASDEX, D3D, JET, JFT2M, PBXM, PDX: Co.

TAUTOT

Real

total energy confinement time

Estimated total energy confinement time (WTOT/PLTH) in seconds.

TAUTH

Real

thermal energy confinement time

Estimated thermal energy confinement time (WTH/PLTH) in seconds.

**PR98 1D Variables**
1D Variable	Units	Data Type	Brief Description	Full Description
IP	A	Real	plasma current	The plasma current in amperes determined from an external Rogowski loop with vessel current subtraction. Normally negative values for JET. Positive values for JET indicate operation with reversed current. Normal level of accuracy is ASDEX (± 2%), D3D (± 1%), JET (± 1%), JFT2M (± 1%), PBXM (± 1%), PDX (± 1%).
BT	T	Real	vacuum toroidal field at geometric axis	The vacuum toroidal magnetic field in Tesla at RGEO determined from the TF coil current. Negative values for JET indicate operation with reversed toroidal field. Normal level of accuracy is ± 1% for all machines.
AMIN	m	Real	minor radius	The horizontal plasma minor radius in meters from an MHD equilibrium fit or a formula based on a number of equilibria (ASDEX). Normal level of accuracy is ASDEX (± 1%), D3D (± 0.5%),JET (± 3%), JFT2M (± 3%), PBXM (± 3%), PDX (± 3%).
RGEO	m	Real	geometric axis	The plasma geometrical major radius in meters, from an MHD equilibrium fit, defined as the average of the minimum and the maximum radial extent of the plasma. Normal level of accuracy is ASDEX (± 0.5%), D3D (±0.6%) JET (± 1%), JFT2M (± 0.75%),PBXM (± 0.65%), PDX (± 0.75%).
KAPPA	-	Real	elongation	The plasma elongation determined from an MHD equilibrium fit or a formula based on a number of equilibria (ASDEX). Normal level of accuracy is ASDEX (± 1%), D3D (± 1%),JET (± 5%), JFT2M (± 10%), PBXM (± 10%),PDX (k = 1 for all records, ±10%).
DELTA	-	Real	triangularity	The triangularity of the plasma boundary from an MHD equilibrium fit. Normal level of accuracy is ASDEX (Na), D3D (± 10%), JET (±10%), JFT2M (± 10%), PBXM (± 25%), PDX (Na).
INDENT	m	Real	indentation	Indentation of the plasma determined from an MHD equilibrium fit. Normal level of accuracy is ASDEX (Na), D3D (Na), JET (Na),JFT2M (Na), PBXM (± 15%), PDX (Na).
PNBI	W	Real	total injected NBI power	Total injected neutral beam power minus shine through in watts. Zero if no beams are on. Normal level of accuracy is ASDEX (± 10%),D3D (± 10%), JET (± 10%), JFT2M (<± 10%), PBXM (± 10%), PDX (± 10%).
PECH	W	Real	coupled ECH power	ECH power in watts coupled to the plasma. Zero if no ECH is applied. Normal level of accuracy is D3D (± 10%). ASDEX, JET, JFT2M,PBXM, PDX: Na.
PICRH	W	Real	coupled ICRH power	ICRH power in watts coupled to the plasma. Zero if no ICRH is applied. Normal level of accuracy is JET (± 10%). ASDEX, D3D, JFT2M, PBXM, PDX: Na.
PLH	W	Real	coupled LH power	LH power in watts coupled to the plasma. Zero if no LH is applied.
PIBW	W	Real	coupled IBW power	IBW power in watts coupled to the plasma. Zero if no IBW is applied.
PFLOSS	W	Real	lost NBI power	Neutral beam power in watts that is lost from the plasma through charge exchange and unconfined orbits. ASDEX: From fits to FREYA code results, (± 30%) D3D: PABS exp (3.3 - IP/10⁶)/100 (± 30%). JET: PINJ exp (3.35 - 0.667 \| IP \|/10⁶-0.2 NEL/10¹⁹)/100 (± 50%). JFT2M: From fits to Monte Carlo code results (± 20%). PBXM: From a fits to the TRANSP code results (± 20%). PDX: From a fits to the TRANSP code results (± 30%).
PRAD	W	Real	total radiated power	Total radiated power in watts as measured by Bolometer. Normal level of accuracy is ASDEX (± 20%), D3D (±15%), JET (± 10 15%), JFT2M (± 10 - 20%),PBXM (± < 25%), PDX (Na).
ZEFF	-	Real	line averaged effective charge	Line average plasma effective charge determined from visible bremsstrahlung. Normal level of accuracy is ASDEX (± 10%),D3D (± 20%). JET (± 30%). JFT2M, PBXM, PDX: Na.
NEL	m^-3	Real	line averaged electron density	Central line average electron density in m^-3 from interferometer. For JET NEL has been approximated by ohmic: NEL ∝ exp {2.931 +0.873 log (NEV) + 0.064 log (NE0)} H-mode: NEL ∝ exp {3.745 + 0.825 log (NEV) + 0.092 log (NE0)} if no measurement is available. The variable NELFORM indicates if NEL is measured or approximated. Normal level of accuracy is ASDEX (± 2%),D3D (± 2 x 10¹⁸ m^-3),JET (± 8%), JFT2M (± 2%), PBXM (± 5%), PDX(± 5%).
VSURF	V	Real	plasma surface loop voltage	The loop voltage at the plasma boundary in volts. Normal level of accuracy is ASDEX (± 5%), D3D (Na), JET (± 5%), JFT2M (± 5%), PBXM (±50%), PDX (± 10%).
VLOOP	V	Real	measured loop voltage	Measured loop voltage at the coil location in
LI	-	Real	internal inductance	Internal plasma inductance: l_i=2 ∫ B_p²dV / ( μ₀² I_p² R_geo )
NMAIN0	m^-3	Real	central main ion density	Central main ion density in m-3.
THNT	s^-1	Real	thermal neutron yield	Total thermal neutron yield in s-1.
WTH	J	Real	thermal plasma energy content	Estimated thermal plasma energy content in Joules. ASDEX: WTH = WDIA - 1.5WFANIWFFORM. D3D: WTH = WMHD - WFFORM. JET: WTH = WDIA - 1.5 (WFPER + WFICRH). If WFPER is missing WFPER is replaced by WFANI* WFFORM. JFT2M: WTH = WDIA/3 + 2WMHD/3 - WFFORM. PBXM: WTH = WMHD - 0.75WFPER - 1.5WFPAR. PDX: WTH = WMHD - 0.75WFPER - 1.5*WFPAR. ASDEX, D3D, JET, JFT2M, PBXM, PDX: Co.
WTOT	J	Real	total plasma energy content	Estimated total plasma energy content in Joules. ASDEX: WTOT = WTH + WFFORM. D3D: WTOT = WMHD JET: WTOT = WTH + WFPER + WFPAR + WFICRH. If WFPER and WFPAR are missing they are replaced by WFFORM. JFT2M: WTOT = WTH + WFFORM PBXM: WTOT = WTH + WFPER + WFPAR PDX: WTOT = WTH + WFPER + WFPAR ASDEX, D3D, JET, JFT2M, PBXM, PDX: Co.
TE0	eV	Real	core electron temperature	The electron temperature at the magnetic axis in eV. ASDEX: From 16 radial YAG measurements under the same profile assumptions as for TEV (± 10%). D3D: Determined by a spline temperature profile fit to the Thomson scattering data (± 10%). JET: From ECE temperature profile (± 10%). JFT2M, PBXM, PDX: Na.
TI0	eV	Real	core ion temperature	The ion temperature at the magnetic axis in eV. D3D: Determined by a spline temperature profile fit to the charge exchange recombination data (± 10%). JET: From Crystal X-ray diagnostic (±10%) or from charge exchange recombination spectroscopy (± 10%). ASDEX, JFT2M, PBXM, PDX: Na.
Q95	-	Real	safety factor at 95% poloidal flux	The plasma safety factor from an MHD equilibrium fit evaluated at the flux surface that encloses 95% of the total poloidal flux. For ASDEX Q95 = q_cyl(1 + (AMIN/RGEO)²(1 + 0.5 BEILI2²)) with q_cyl = 10⁷ (BT/IP)(AMIN²/RGEO) (1 + KAPPA²)/2. Normal level of accuracy is ASDEX (± 15%), D3D (± 3%), JET (± 10%), JFT2M (± 10%) PBXM (± 10%), PDX (± 10%).
POHM	W	Real	Ohmic power	Total ohmic power in watts. ASDEX: Determined from max {0, VSURFIP}, (Ohmic: ± 5% H: ± 50%). D3D: Calculated using CB₁₀I_p²RGEO²/(W_Tn_e). B₁₀ is the central visible bremsstrahlung signal. When n_eis determined from the radial (vertical) CO₂ chord, C is equal to 1.0310^-19 (9.9210^-20) (± 15%). JET: Corrected for inductance effects (± 20%). JFT2M: Calculated as VSURFIP (± 10%). PBXM: Calculated as VSURF*IP (± 50%). PDX: Calculated using VSURF and IP corrected for inductance effects (± 20%).
IBOOT	A	Real	bootstrap current	Estimated total bootstrap current (in A).
PHIA	Wb	Real	toroidal flux	Total toroidal flux in Weber enclosed by the plasma
PFUSION	W	Real	DT fusion power	Total fusion power due to DT reactions in W.

**PR98 2D Variables**
2D Variable	Units	Data Type	Brief Description	Full Description
RHOxxxx	-	Real	evolving rho grid for experimental data	evolving rho grid for experimental data, where xxxx = TEXP, TEXPEB, TIXP, TIXPEB, NEXP, NEXPEB, NMnXP, NMnXPEB, NIMPXP, NIMPXPEB, VROTXP, VROTXPEB (where n labels thermal ion species 1&le n&le 4).
TE	eV	Real	interpolated electron temperature	Fitted electron temperature profile in eV.
TEEB	eV	Real	error in interpolated electron temperature	Error bars on the fitted electron temperature profile in eV. Provided on the same radial positions as TE.
TEXP	eV	Real	experimental electron temperature	Measured electron temperature profile in eV.
TEXPEB	eV	Real	error in experimental electron temperature	Error bars on the measured electron temperature profile in eV.
TI	eV	Real	interpolated ion temperature	Fitted ion temperature profile in eV.
TIEB	eV	Real	error in interpolated ion temperature	Error bars on the fitted ion temperature profile in eV. Provided on the same radial positions as TI.
TIXP	eV	Real	experimental ion temperature	Measured ion temperature profile in eV.
TIXPEB	eV	Real	error in experimental ion temperature	Error bars on the measured ion temperature profile in eV. TIXPEB is added to TIXP for the upper limit. TIXPEB is subtracted from TIXP for the lower limit. Provided on the same radial positions as TIXP.
NE	m^-3	Real	interpolated electron density	Fitted electron density profile in m-3.
NEEB	m^-3	Real	error in interpolated electron density	Error bars on the fitted electron density profile in m-3. Provided on the same radial positions as NE.
NEXP	m^-3	Real	experimental electron density	Measured electron density profile in m-3.
NEXPEB	m^-3	Real	error in experimental electron density	Error bars on the measured electron density profile in m-3. NEXPEB is added to NEXP for the upper limit. NEXPEB is subtracted from NEXP for the lower limit. Provided on the same radial positions as NEXP.
QNBIE	W/m^3	Real	NBI electron power deposition	Power deposition profile on thermal electrons by beams in W/m-3.
QICRHE	W/m^3	Real	ICRH electron power deposition	Power deposition profile on thermal electrons by icrh in W/m-3.
QECHE	W/m^3	Real	ECH electron power deposition	Power deposition profile
QLHE	W/m^3	Real	LH electron power deposition	Power deposition profile on thermal electrons by LH in W/m-3.
QIBWE	W/m^3	Real	IBW electron power deposition	Power deposition profile on thermal electrons by IBW in W/m-3.
QNBII	W/m^3	Real	NBI ion power deposition	Power deposition profile on thermal ions by beams in W/m-3. (includes the thermalization power of fast ions
QICRHI	W/m^3	Real	ICRH ion power deposition	Power deposition profile on thermal ions by icrh in W/m-3.
QECHI	W/m^3	Real	ECH ion power deposition	Power deposition profile on thermal ions by ECH in W/m-3.
QLHI	W/m^3	Real	LH ion power deposition	Power deposition profile on thermal ions by LH in W/m-3.
QIBWI	W/m^3	Real	IBW ion power deposition	Power deposition profile on thermal ions by IBW in W/m-3.
SNBIE	m^-3/s	Real	NBI electron source	Source of thermal electrons from beams in s-1 m-3.
SNBII	m^-3/s	Real	NBI ion source	Source of thermal ions from beams due to thermalization of beams particle and include charge exchange processes, in s-1 m-3.
CURNBI	A/m^2	Real	NBI driven current profile	Current drive profile by beams in A m-2.
CURICRH	A/m^2	Real	ICRH driven current profile	Current drive profile by ICRH in A m-2.
CURECH	A/m^2	Real	ECH driven current profile	Current drive profile by ECH in A m-2.
CURLH	A/m^2	Real	LH driven current profile	Current drive profile by LH in A m-2.
NFAST	m^-3	Real	fast ion density profile	Non thermal ion density profile in m-3.
QRAD	W/m^3	Real	radiated power density	Total radiated power density in W m-3.
IOTAVAC	-	Real	stellarator (not tokamaks) vacuum rotational transform	Stellarator vacuum rotational transform. Omitted for Tokamaks.
ZEFFR	-	Real	effective charge profile	Plasma effective charge radial profile.
ZEFFREB	-	Real	error in effective charge profile	Error bars on plasma effective charge radial profile. Provided on the same radial positions as ZEFFR.
Q	-	Real	safety factor profile	Safety factor profile.
QEB	-	Real	error in safety factor profile	Error bars on safety factor profile. Provided on the same radial positions as Q.
CHIE	m^2/s	Real	estimated electron thermal diffusivity	Estimated thermal electrons heat diffusivity in m2 s-1.
CHII	m^2/s	Real	estimated ion thermal diffusivity	Estimated thermal ions heat diffusivity in m2 s-1.
NM1	m^-3	Real	interpolated main ion density	Main ion density profile in m-3.
NM1EB	m^-3	Real	error in interpolated main ion density	Error bars on main ion density profile in m-3.
NM1XP	m^-3	Real	experimental main ion density	Measured main ion density profile in m-3.
NM1XPEB	m^-3	Real	error in experimental main ion density	Error bars on measured main ion density profile in m-3.
NM2	m^-3	Real	interpolated 2nd main ion density	Secondary main ion density profile in m-3. For instance helium injection into deuterium plasma.
NM2EB	m^-3	Real	error in interpolated 2nd main ion density	Error bars on secondary main ion density profile in m-3.
NM2XP	m^-3	Real	experimental 2nd main ion density	Measured secondary main ion density profile in m-3.
NM2XPEB	m^-3	Real	error in experimental 2nd main ion density	Error bars on measured secondary main ion density profile in m-3.
NM3	m^-3	Real	interpolated 3rd main ion density	Third main ion density profile in m-3. For instance helium injection into deuterium plasma.
NM3EB	m^-3	Real	error in interpolated 3rd main ion density	Error bars on third main ion density profile in m-3.
NM3XP	m^-3	Real	experimental 3rd main ion density	Measured third main ion density profile in m-3.
NM3XPEB	m^-3	Real	error in experimental 3rd main ion density	Error bars on measured third main ion density profile in m-3.
NIMP	m^-3	Real	interpolated impurity ion density	Main impurity density profile in m-3.
NIMPEB	m^-3	Real	error in interpolated impurity ion density	Error bars on main impurity density profile in m-3.
NIMPXP	m^-3	Real	experimental impurity ion density	Measured main impurity density profile in m-3.
NIMPXPEB	m^-3	Real	error in experimental impurity ion density	Error bars on measured main impurity density profile in m-3.
QOHM	W/m^3	Real	Ohmic power density	Ohmic power density in W m-3.
QEI	W/m^3	Real	equipartition power density	Equipartition power density from electrons to ions in W m-3.
CURTOT	A/m^2	Real	total current density	Total current density in A m-2.
CURTOTEB	A/m^2	Real	error in total current density	Error bars on total current density in A m-2. Provided on same radial positions as CURTOT.
VROT	rad/s	Real	fitted toroidal angular speed	Fitted toroidal angular speed in rad. s-1.
VROTEB	rad/s	Real	error in fitted toroidal angular speed	Error bars on fitted toroidal angular speed in rad. s-1. Provided on same radial positions as VROT.
VROTXP	rad/s	Real	experimental toroidal angular speed	Measured toroidal angular speed in rad. s-1.
VROTXPEB	rad/s	Real	error in experimental toroidal angular speed	Error bars on measured toroidal angular speed in rad. s-1. VROTXPEB is added to VROTXP for upper limit. VROTXPEB is subtracted from VROTXP for lower limit. Provided on same radial positions as VROTXP.
DWER	W/m^3	Real	time derivative of electron thermal energy density	Term ∂ W_e(ρ,t) / ∂ t of the energy conservation equation in W/m³.
DWIR	W/m^3	Real	time derivative of ion thermal energy density	Term ∂ W_i(ρ,t) / ∂ t of the energy conservation equation in W/m³, where i is the main thermal ion.
DNER	m^-3/s	Real	time derivative of electron density	Term ∂ n_e(ρ,t) / ∂ t of the electron particles conservation equation in m^-3s^-1.
SWALL	m^-3/s	Real	ion particle source from ionisation of recycled wall neutrals	Main thermal ion particle source term due to ionisation of recycling wall neutrals in m^-3s^-1.
QWALLE	W/m^3	Real	electron heat loss from ionisation of wall neutrals	Thermal electrons heat loss due to the ionisation of wall neutrals in W m^-3.
QWALLI	W/m^3	Real	ion heat loss from ionisation/CX of wall neutrals	Main thermal ion heat loss due to ionisation and charge exchange with wall neutrals in Wm^-3. = ⟨ σ v ⟩ _cx n₀ n_i (1.5 T_i - E₀ ) +⟨ σ v ⟩ _ionisation n₀ n_e E₀
QFUSE	W/m^3	Real	fusion power deposition to electrons	Electron heating density due to fusion DT reaction in Wm^-3.
QFUSI	W/m^3	Real	fusion power deposition to ions	Main thermal ion heating density due to DT fusion reaction in Wm^-3. Includes the thermalization power (1.5 S_{thermal α} T_i) when Helium⁴ is the main thermal ion.
BPOL	T	Real	flux surface averaged poloidal magnetic field	Surface averaged poloidal magnetic field in Tesla.
RMAJOR	m	Real	major radius	The geometrical major radius in meters, from an MHD equilibrium fit, defined as the average of the minimum and the maximum radial extent of the magnetic surface at the elevation of the magnetic axis. Normal level of accuracy is ASDEX (± 0.5%), D3D (± 0.6%) JET (± 1%), JFT2M (± 0.75%), PBXM (± 0.65%), PDX (± 0.75%).
RMINOR	m	Real	minor radius	Geometric minor radius of the magnetic surface at the elevation of the magnetic axis in m .
VOLUME	m^3	Real	volume	Volume enclosed by the magnetic surface in m3.
KAPPAR	-	Real	elongation	Average elongation of the magnetic surface.
DELTAR	-	Real	triangularity	Averaged triangularity of the magnetic surface.
INDENTR	m	Real	indentation	Averaged indentation of the magnetic surface.
SURF	m^2	Real	surface area	Surface area of the magnetic surface in m2.
GRHO1	m^-1	Real	⟨ \| ∇ ρ \| ⟩	Metric quantity: ⟨ \| ∇ ρ \| ⟩ where ρ is the square root of the normalised toroidal flux
GRHO2	m^-2	Real	⟨ \| ∇ ρ \| ² ⟩	Metric quantity ⟨ \| ∇ ρ \| ² ⟩, where ρ is the square root of the normalised toroidal flux