PR98 COMMENTS Variables
0D Variable UnitsData TypeBrief DescriptionFull Description
Tokamak: TOKAMAKString tokamak name tokamak name
Pulse number: SHOTString shot number shot number
Contact person: CONTACTString contact person at the experiment contact person at the experiment
Institution: INSTITUTIONString institution institution
Date of shot: SHOT_DATEString date of shot date of shot
Analysis code(s): ANAL_CODESString codes used for data analysis codes used for data analysis
Run number: RUN_NUMBERString run number run number
Date of analysis: ANAL_DATESString date of analysis date of analysis
Assumptions: ASSUMPTIONString main assumptions made in the analysis main assumptions made in the analysis
Shot description: DESCRIPTIONString 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: PUBLICATIONString publication publication
Additional: ADDITIONALString any additional information any additional information


PR98 0D Variables
0D Variable UnitsData TypeBrief DescriptionFull 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 sReal 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 amuInteger mass number of main gas Mass number of the plasma working gas. Possible values are: 1 (Hydrogen), 2 (Deuterium), 3 (3He) or 4 (4He).
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 amuInteger mass number of beam gas Mass number of the neutral beam gas. Possible values are: 1 (Hydrogen), 2 (Deuterium), 3 (3He) or 4 (4He).
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 amuInteger 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(3He) or 4 (4He).
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 amuInteger 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
10.31451.2LI


RGEO mReal 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 mReal 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 mReal 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 mReal 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 mReal 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 mReal 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^2Real poloidal cross sectional area Area of plasma cross section in m2 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%).
VOL m^3Real 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.
BT TReal 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.
IP AReal 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 VReal 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 = qcyl(1 + (AMIN/RGEO)2 (1 + 0.5 BEILI22)) with qcyl = 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^-3Real 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/sReal 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 -Realline 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 WReal 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 WReal Ohmic power Total ohmic power in watts.
ASDEX: Determined from max {0, VSURF*IP}, (Ohmic: ± 5% H: ± 50%).
D3D: Calculated using CB10Ip2RGEO2/(WTne). B10 is the central visible bremsstrahlung signal. When ne is determined from the radial (vertical) CO2chord, C is equal to 1.03*10-19 (9.92*10-20) (± 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 VReal neutral beam energy Neutral beam energy weighted by power in volts. This quantity is calculated from &sum EiPi/&sum Pi where Ei is the beam energy for source i and Pi 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 WReal 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 P= 10% then BSOURCE = 801010.
PINJ2 WReal 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 3He or 4He beams.
COCTR -Real fraction of beam power co-injected Fraction of beam power co-injected as compared to the total beam power injected.
PNBI WReal 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 HzReal 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 WReal 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 HzReal 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 WReal 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 HzReal LH frequency Frequency of LH waves in Hz.
LHNPAR -Real LH parallel mode number LH parallel mode number.
PLH WReal LH power coupling to plasma LH power in watts coupled to the plasma. Zero if no LH is applied.
IBWFREQ HzReal IBW frequency Frequency of IBW in Hz.
PIBW WReal IBW power coupling to plasma IBW power in watts coupled to the plasma. Zero if no IBW is applied.
TE0 eVReal 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.
TI0eVReal 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 NEL0.04(NE0(ZEFF-1))0.045/ENBI0.14 for H beam and C'NEL0.12(NE0(ZEFF-1))0.020/ENBI0.14 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*10-2NEL0.11/ENBI0.07.
Normal level of accuracy is ASDEX (± 7%), D3D (± 50%),JET (± 50%), JFT2M, PBXM, PDX: Co.

WFICRH JReal 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 amuReal 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:
ISEQExplanation
NONENo particular scan
G1Comparison shots for Helium program
NE1Density variation
HT1Search for high confinement times
EF11Search for long ELM-free periods
SP11

Spectroscopic investigations
HBE1High beta investigations, Ti profile measurements
HBE2 High beta investigations, Ti profile measurements
HBE3High beta investigations, Ti profile measurements
P1PNBI scan
P2PNBI scan
QC1P3QCYL and PNBI scan
BT1BT scan
BT2 P4 BT and PNBI scan
BT3BT scan
BT4BT scan
BT5BT scan
BT6BT scan
BT7BT scan

Possible options for JFT2M are:
ISEQ

Explanation
NONENo particular scan
AM1AMIN scan with Ip = 0.22MA (same Q95)
IP11st Ip scan with Bt = 1.25T
IP22nd Ip scan (Hydrogen)
IP33rd Ip scan (Deuterium)
BS1Scan of 801010 (CO or CTR) and 603010 (CO or CTR)
BT1Bt scan with Ip = 0.16MA
BT2Bt scan with Ip = 0.21MA
EB1ENBI scan with BSOURCE = 603010
EB2ENBI scan with BSOURCE = 801010
G1Intense gas puff for comparison with H pellet H mode
G2Intense gas puff for comparison with D pellet H mode
G3IP22nd Ip scan (Hydrogen) with intense gas puffing
G4IP33rd Ip scan (Deuterium) with intense gas puffing
IE1IEML and PNBI scan looking for steady state H mode region
P1PNBI scan by CO or CTR with Ip = 0.25MA
P2PNBI scan by CO + CTR with Ip = 0.24MA
P3IP4NE1PNBI , IP and NEL scan in Hydrogen plasma
P4IP5NE2PNBI , IP and NEL scan in Deuterium plasma
PE1Hydrogen pellet into Hydrogen plasma
PE2Deuterium pellet into Deuterium plasma
XP1XPLIM scan with Ip = 0.24MA

No options available for D3D, JET, PBXM and PDX.
WTH JReal 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 JReal 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^-1Real time derivative of total plasma energy content Time rate of change of WTOT in Joules / s .
PL WReal 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 WReal 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 sReal total energy confinement time Estimated total energy confinement time (WTOT/PLTH) in seconds.
TAUTH sReal thermal energy confinement time Estimated thermal energy confinement time (WTH/PLTH) in seconds.


PR98 1D Variables
1D Variable UnitsData TypeBrief DescriptionFull Description
IP AReal 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 TReal 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 mReal 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 mReal 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 mReal 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 WReal 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 WReal 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 WReal 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 WReal coupled LH power LH power in watts coupled to the plasma. Zero if no LH is applied.
PIBW WReal coupled IBW power IBW power in watts coupled to the plasma. Zero if no IBW is applied.
PFLOSS WReal 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 WReal 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^-3Real 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 VReal 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 VReal measured loop voltage Measured loop voltage at the coil location in
LI -Real internal inductance Internal plasma inductance:
li=2 ∫ Bp2dV / ( μ02 Ip2 Rgeo )
NMAIN0 m^-3Real central main ion density Central main ion density in m-3.
THNT s^-1Real thermal neutron yield Total thermal neutron yield in s-1.
WTH JReal 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 JReal 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 eVReal 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 eVReal 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 = qcyl(1 + (AMIN/RGEO)2(1 + 0.5 BEILI22)) with qcyl = 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 WReal Ohmic power Total ohmic power in watts.
ASDEX: Determined from max {0, VSURF*IP}, (Ohmic: ± 5% H: ± 50%).
D3D: Calculated using CB10Ip2RGEO2/(WTne). B10 is the central visible bremsstrahlung signal. When ne is determined from the radial (vertical) CO2 chord, C is equal to 1.03*10-19 (9.92*10-20) (± 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%).
IBOOT AReal bootstrap current Estimated total bootstrap current (in A).
PHIA WbReal toroidal flux Total toroidal flux in Weber enclosed by the plasma
PFUSION WReal DT fusion power Total fusion power due to DT reactions in W.


PR98 2D Variables
2D Variable UnitsData TypeBrief DescriptionFull 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 eVReal interpolated electron temperature Fitted electron temperature profile in eV.
TEEB eVReal error in interpolated electron temperature Error bars on the fitted electron temperature profile in eV. Provided on the same radial positions as TE.
TEXP eVReal experimental electron temperature Measured electron temperature profile in eV.
TEXPEB eVReal error in experimental electron temperature Error bars on the measured electron temperature profile in eV.
TI eVReal interpolated ion temperature Fitted ion temperature profile in eV.
TIEB eVReal error in interpolated ion temperature Error bars on the fitted ion temperature profile in eV.
Provided on the same radial positions as TI.
TIXP eVReal experimental ion temperature Measured ion temperature profile in eV.
TIXPEB eVReal 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^-3Real interpolated electron density Fitted electron density profile in m-3.
NEEB m^-3Real 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^-3Real experimental electron density Measured electron density profile in m-3.
NEXPEB m^-3Real 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^3Real NBI electron power deposition Power deposition profile on thermal electrons by beams in W/m-3.
QICRHE W/m^3Real ICRH electron power deposition Power deposition profile on thermal electrons by icrh in W/m-3.
QECHE W/m^3Real ECH electron power deposition Power deposition profile
QLHE W/m^3Real LH electron power deposition Power deposition profile on thermal electrons by LH in W/m-3.
QIBWE W/m^3Real IBW electron power deposition Power deposition profile on thermal electrons by IBW in W/m-3.
QNBII W/m^3Real 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^3Real ICRH ion power deposition Power deposition profile on thermal ions by icrh in W/m-3.
QECHI W/m^3Real ECH ion power deposition Power deposition profile on thermal ions by ECH in W/m-3.
QLHI W/m^3Real LH ion power deposition Power deposition profile on thermal ions by LH in W/m-3.
QIBWI W/m^3Real IBW ion power deposition Power deposition profile on thermal ions by IBW in W/m-3.
SNBIE m^-3/sReal NBI electron source Source of thermal electrons from beams in s-1 m-3.
SNBII m^-3/sReal 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^2Real NBI driven current profile Current drive profile by beams in A m-2.
CURICRH A/m^2Real ICRH driven current profile Current drive profile by ICRH in A m-2.
CURECH A/m^2Real ECH driven current profile Current drive profile by ECH in A m-2.
CURLH A/m^2Real LH driven current profile Current drive profile by LH in A m-2.
NFAST m^-3Real fast ion density profile Non thermal ion density profile in m-3.
QRAD W/m^3Real 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/sReal estimated electron thermal diffusivity Estimated thermal electrons heat diffusivity in m2 s-1.
CHII m^2/sReal estimated ion thermal diffusivity Estimated thermal ions heat diffusivity in m2 s-1.
NM1 m^-3Real interpolated main ion density Main ion density profile in m-3.
NM1EB m^-3Real error in interpolated main ion density Error bars on main ion density profile in m-3.
NM1XP m^-3Real experimental main ion density Measured main ion density profile in m-3.
NM1XPEB m^-3Real error in experimental main ion density Error bars on measured main ion density profile in m-3.
NM2 m^-3Real interpolated 2nd main ion density Secondary main ion density profile in m-3.
For instance helium injection into deuterium plasma.
NM2EB m^-3Real error in interpolated 2nd main ion density Error bars on secondary main ion density profile in m-3.
NM2XP m^-3Real experimental 2nd main ion density Measured secondary main ion density profile in m-3.
NM2XPEB m^-3Real error in experimental 2nd main ion density Error bars on measured secondary main ion density profile in m-3.
NM3 m^-3Real interpolated 3rd main ion density Third main ion density profile in m-3.
For instance helium injection into deuterium plasma.
NM3EB m^-3Real error in interpolated 3rd main ion density Error bars on third main ion density profile in m-3.
NM3XP m^-3Real experimental 3rd main ion density Measured third main ion density profile in m-3.
NM3XPEB m^-3Real error in experimental 3rd main ion density Error bars on measured third main ion density profile in m-3.
NIMP m^-3Real interpolated impurity ion density Main impurity density profile in m-3.
NIMPEB m^-3Real error in interpolated impurity ion density Error bars on main impurity density profile in m-3.
NIMPXP m^-3Real experimental impurity ion density Measured main impurity density profile in m-3.
NIMPXPEB m^-3Real error in experimental impurity ion density Error bars on measured main impurity density profile in m-3.
QOHM W/m^3Real Ohmic power density Ohmic power density in W m-3.
QEI W/m^3Real equipartition power density Equipartition power density from electrons to ions in W m-3.
CURTOT A/m^2Real total current density Total current density in A m-2.
CURTOTEB A/m^2Real error in total current density Error bars on total current density in A m-2.
Provided on same radial positions as CURTOT.
VROT rad/sReal fitted toroidal angular speed Fitted toroidal angular speed in rad. s-1.
VROTEB rad/sReal 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/sReal experimental toroidal angular speed Measured toroidal angular speed in rad. s-1.
VROTXPEB rad/sReal 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^3Real time derivative of electron thermal energy density Term ∂ We(ρ,t) / ∂ t of the energy conservation equation in W/m3.
DWIR W/m^3Real time derivative of ion thermal energy density Term ∂ Wi(ρ,t) / ∂ t of the energy conservation equation in W/m3, where i is the main thermal ion.
DNER m^-3/sReal time derivative of electron density Term ∂ ne(ρ,t) / ∂ t of the electron particles conservation equation in m-3s-1.
SWALL m^-3/sReal ion particle source from ionisation of recycled wall neutrals Main thermal ion particle source term due to ionisation of recycling wall neutrals in m-3 s-1.
QWALLE W/m^3Real 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^3Real 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 ni (1.5 Ti - E0 ) +⟨ σ v ⟩ ionisation n0 ne E0
QFUSE W/m^3Real fusion power deposition to electrons Electron heating density due to fusion DT reaction in Wm-3.
QFUSI W/m^3Real fusion power deposition to ions Main thermal ion heating density due to DT fusion reaction in Wm-3. Includes the thermalization power (1.5 Sthermal α Ti) when Helium4 is the main thermal ion.
BPOL TReal flux surface averaged poloidal magnetic field Surface averaged poloidal magnetic field in Tesla.
RMAJOR mReal 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 mReal minor radius Geometric minor radius of the magnetic surface at the elevation of the magnetic axis in m .
VOLUME m^3Real 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 mReal indentation Averaged indentation of the magnetic surface.
SURF m^2Real surface area Surface area of the magnetic surface in m2.
GRHO1 m^-1Real ⟨ | ∇ ρ | ⟩ Metric quantity: ⟨ | ∇ ρ | ⟩ where ρ is the square root of the normalised toroidal flux
GRHO2 m^-2Real ⟨ | ∇ ρ | 2 Metric quantity ⟨ | ∇ ρ | 2 ⟩, where ρ is the square root of the normalised toroidal flux