25th 5th week(04/08/24 - 04/12/24) schedule for LHD experiment
Date

Weekly report :Schedule of the day

Day Btof dire
the ctioweek nMorning (～ 12:15)

Afternoon (12:15 ～ 16:45)

WallGasExperiment implementation system

Remark

Sat:
None

4/ M
8 o.

Sun:He GD
Mon:
None[TC](10:30 ～ 14:15)ECH, NBI
Transport study in ECRH superposed ion ITB plasma

4/ Tu C
9. W

# Opt. Pol.
1CW
2 ✓ CW

Rax
3.6
3.75

Bax
2.75
2.64

gamma
1.25381.2538

Bq
100.0
100.0

SC

# Opt. Pol.
1
CCW
2CCW
3CCW4 ✓ CCW

Rax
3.75
3.75
3.75
3.75

Bax
0.75
1.375
2.64
1.0

gamma
1.25381.25381.25381.2538[IA](10:30 ～ 12:45)ECH, NBI
Observation of the fast-ion confinement degradation
depending on the neutral beam power

4/ Th C
11 . W

Rax
3.6

Bax
2.75

gamma
1.2538Bq
100.0# Opt. Pol.
1CW

Rax
3.6

Bax
2.75

gamma
1.2538

Bq
100.0

SC

Bq
100.0
100.0
100.0
100.0

SC

# Opt. Pol.
1CCW
2CCW
3CCW

Rax
3.75
3.9
3.6

Bax
2.64
2.53852.75

gamma
1.25381.25381.2538

Bq
100.0
100.0
100.0

[TC](12:45 ～ 14:15)ECH, NBI
Impurity effect on turbulent transport in magneticallyconfined toroidal plasmas[MAP](14:15 ～ 16:45)ECH, NBI
Real-time wall conditioning using the IPD, Impurity
transport study in the plasma with an impurity hole

# Opt. Pol.
1CW

# Opt. Pol.
1CW
2
CW

Rax
3.6

Rax
3.9
3.75
3.6

Bax
2.5385
2.64
2.75

gamma
1.25381.25381.2538

H2,Ne,
Ar(TC)FTS, ECE-Imaging at 1.0T,【Responsible person】T.Seki /CECE, CXS, LID
H.Hayashi【Coordinator#1】K.Mukai/M.Nishiu (MAP)CXS, IPD, LID (12:30ra15:15), Ne puff, impurity pellet【Coordinator#2】R.Yanai/H.Nakano (id:723) Impurity
pellet/TESPEL【ECH】H.Takahashi(id:724) Impurity gas puff
【Gas・vacuum・shutter】B/C(id:731) Mag. Conf.: Using LID【Low temp.】noguchi.hiroki
coil【LID power】M.Kawai/K.Nagahara (id:752) NBI: Injection into the【Coil power】tanoue.hiroyuki
discharges with low fields(id:762) Impurity powder【central ctrl.】maeno.hiroyadropper【data proc.】M.Ohsuna【EXP LAN】nakamura.osamu

H2,He,Ar(IA)Special Requirement: C-pellet【Responsible person】M.Osakabe /Required Diag.: FIDA, HIBP
H.Hayashi【Coordinator#1】G.Motojima/H.Nakan (TC)LID (cancel)
Required Diag.：TESPEL, SSGP, CXS,
o/N.Kenmochi
DR, BS, PCI【Coordinator#2】R.Ishikawa/T.Tokuza(MAP)C samples are exposed to thewa/R.Seki
divertor plasma【ECH】N.Kenmochi
LID (cancel, 15:40-16:45)【Gas・vacuum・shutter】A/B
Required Diag.: Fast camera (2.5-U),
Spectroscopy, CXS, BES, TESPEL,【Low temp.】noguchi.hiroki
HIBP, DR, PCI【LID power】M.Kawai/K.Nagahara【Coil power】takami.shigeyuki(id:723) Impurity pellet/TESPEL【central ctrl.】maeno.hiroya(id:724) Impurity gas puff
(id:728) Mag. Conf.: 3.55 m =< Rax <【data proc.】M.Ohsuna
3.6 m【EXP LAN】inoue.tomoyuki

H2,He,Ar【Responsible person】M.Isobe /(IA)MSE
H.Hayashi【Coordinator#1】M.Kobayashi/M.Goto (id:724) Impurity gas puff
【Coordinator#2】A.Shimizu/K.Ogawa (id:729) ECH: Low absorption【ECH】R.Yanai
condition【Gas・vacuum・shutter】C/A(id:736) Mag. Conf.: Subcool【Low temp.】noguchi.hiroki
conditions (Combined) :Subcool required【LID power】M.Kawai/K.Nagahara(id:743) ECH: Fundamental X【Coil power】tanoue.hiroyuki
mode injection from the high【central ctrl.】maeno.hiroya
field side【data proc.】M.Ohsuna(id:748) ECH: off-axis injection【EXP LAN】nakamura.osamu

SCH2 GD

Bax
2.75

gamma
1.2538Bq100.0

SC

Rax
3.6
3.55

Bax
2.75
2.7887gamma
1.25381.2538

Bq
100.0
100.0

SC

He GD

SCNone
DivCryo# Opt. Pol.
1
CCW
2CCW
3
CCW

H2,He,Ar,CH4

HIBP, Impurity pellet, Ice pellet, PCI,
【Responsible person】S.Masuzaki /Reflectometer, Doppler
H.Hayashi
Reflectometer, Off-axis ECH, MECH,【Coordinator#1】T.kobayashi/T.Kawat CTS
e
BES, CXS, H/He ratio,【Coordinator#2】A.Shimizu/K.Ogawa (IA)FIDA,
Bulk-CXS, CH4 puff
【ECH】H.Igami(id:723) Impurity pellet/TESPEL【Gas・vacuum・shutter】C/A(id:724) Impurity gas puff
【Low temp.】noguchi.hiroki(id:741) ECH: Heating with the【LID power】M.Kawai/K.Nagahara
perpendicular injection from Port 2-O【Coil power】takami.shigeyuki: Subcool required(id:745) ECH: Collective Thomson【central ctrl.】maeno.hiroya
Scattering (CTS) measurement【data proc.】M.Ohsuna(id:748) ECH: off-axis injection【EXP LAN】inoue.tomoyuki(Combined)[MAP](12:30 ～ 16:45)ECH, NBI
Spectroscopic measurement of detached plasma and boron ion intensity lines[MAP](10:30 ～ 13:45)ECH, NBI
Tomographic analysis of helium atom emission line intensity

4/ Fr CC
12 . W# Opt. Pol.
1CWDivCryo[TC](10:30 ～ 12:30)ECH, NBI
Characteristics of the radial mode structure of resistive interchange mode

4/ W CC
10 e. W(TC)BES, CXS, MSE, FIDA, FILD,[IA](14:45 ～ 16:45)ECH, NBI
Validation of high-energy NB shine-through model(MAP)CXS, impurity gas puff

[IA](13:45 ～ 16:45)ECH, NBI
electron cyclotron mazer instability
Bq
100.0
100.0100.0

SC# Opt. Pol.
1CCW
2CCW

Rax
3.6
3.9

Bax
2.752.6308

gamma
1.25381.2538

Bq
100.0
100.0

SC

✓

None(Combined)LHD projectPrepared byDaily Schedule

T.Kobayashi
N.TamuraDate2024/4/9(Tue)Experimental Subject

Transport study in ECRH superposed ion ITB plasma
Validation of high-energy NB shine-through model

Exp. No.

Experimental Session Group

Session Coordinator

1345

TC/IA

T.kobayashi[2231] / A.Shimizu[2454]
T.Kawate[2256] / K.Ogawa[2229]

89

Time Table

1011UP

1213[TC]

1415[IA]

161718

1920

Gas[TC](10:30 ～ 14:15) ECH, NBI
10:30-14:35 Transport study in ECRH superposed ion ITB plasma (H. Nakano)
14:35-14:45 NBI calibration (3 shots)
PolarityCWCWRax(m)
3.6
3.75

Bax(T)
2.75
2.64

gamma
1.25381.2538

Bq(%)
100.0
100.0

H2,He,Ar

Subcooled[IA](14:45 ～ 16:45) ECH, NBI
14:45-16:45 Validation of high-energy NB shine-through model (S. Sumida (QST), M. Osakabe)
Sequence:3min#Option1

Polarity
CWRax(m)3.6

Bax(T)
2.75

gamma
1.253822DN

Details and Experimental Conditions

Sequence:3min#Option
12✓21

Bq(%)
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): H2 , Cryopump(During Exp.): on
Remarks(TC)BES, CXS, MSE, FIDA, FILD, HIBP, Impurity pellet, Ice pellet, PCI, Reflectometer, Doppler
Reflectometer, Off-axis ECH, MECH, CTS(IA)FIDA, BES, CXS, H/He ratio, Bulk-CXS, CH4 puff
【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:724) Impurity gas puff
(id:741) ECH: Heating with the perpendicular injection from Port 2-O : Subcool required(id:745) ECH: Collective Thomson Scattering (CTS) measurement(id:748) ECH: off-axis injection (Combined)

H2,He,C
H4

LHD projectPrepared byDaily Schedule

Y.Takemura
M. GotoDate

Experimental Subject

2024/4/10(Wed)Characteristics of the radial mode structure of resistive interchange mode
Spectroscopic measurement of detached plasma and boron ion intensity
lines

Exp. No.

Experimental Session Group

Session Coordinator

1346

TC/MAP

K.Mukai[2240] / R.Yanai[2163]
M.Nishiura[2184] / H.Nakano[2209]

89Time Table

10UP

111213[TC]

1415[MAP]

16171819202122DN

Details and Experimental Conditions

Gas[TC](10:30 ～ 12:30) ECH, NBI
10:30-12:30 Characteristics of the radial mode structure of resistive interchange mode and its parameter
dependence (J. Valera(UC3M), Y. Takemura)# [Change of Mag. Config.: 0.75T -> 1.0T(option) -> 1.375T -> 2.64T] will done between 10:30 and 12:30.

H2

Sequence:3min#1234Option✓

Polarity
CCW
CCW
CCW
CCW

Rax(m)
3.75
3.75
3.75
3.75

Bax(T)
0.75
1.375
2.64
1.0gamma
1.25381.2538
1.25381.2538

Bq(%)
100.0
100.0
100.0
100.0

Subcooled[MAP](12:30 ～ 16:45) ECH, NBI
12:30-15:15 Spectroscopic analysis of detached plasma (M. Goto)# [Change of Mag. Config.: 3.75m -> 3.9m] will done between 12:30 and 15:15.
15:15-15:45 [Change of Mag. Config.: 3.9m -> 3.6m]
15:45-16:45 Boron ion intensity lines for measurements of the electron temperature and density (N. Goto)
Sequence:3min#1
2
3OptionPolarity
CCW
CCW
CCW

Rax(m)
3.75
3.9
3.6

Bax(T)
2.64
2.53852.75

gamma
1.25381.25381.2538

Bq(%)
100.0
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): H2 , GD(After Exp.): He , Cryopump(During Exp.): off
Remarks(TC)FTS, ECE-Imaging at 1.0T, CECE, CXS, LID(MAP)CXS, IPD, LID (12:30-15:15), Ne puff, impurity pellet【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID coil
(id:752) NBI: Injection into the discharges with low fields(id:762) Impurity powder dropper

H2,Ne,ArLHD projectPrepared byDaily Schedule

R.SekiN.Tamura

Date

Experimental Subject

2024/4/11(Thu)

Observation of the fast-ion confinement degradation depending on the neutral beam power
Impurity effect on turbulent transport in magnetically-confined toroidal plasmas
Real-time wall conditioning using the IPD, Impurity transport study in the plasma with an
impurity holeExp. No.

Experimental Session Group

Session Coordinator

IA/TC/MAP

G.Motojima[2142] / R.Ishikawa[2576]
H.Nakano[2209] / T.Tokuzawa[2217]
N.Kenmochi[2208] / R.Seki[2201]

1347
89Time Table

10UP

11[IA]

1213[TC]

1415
[MAP]

1617181920

Gas[IA](10:30 ～ 12:45) ECH, NBI
10:30-12:40 Observation of the fast-ion confinement degradation depending on the neutral beampower (S. Kamio(TAE), K. Nagaoka)
Polarity
CWRax(m)3.6Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

H2

Subcooled[TC](12:45 ～ 14:15) ECH, NBI
12:40-14:10 Impurity effect on turbulent transport in magnetically-confined toroidal plasmas(N.Tamura)

H2,He,Ar

Sequence:3min#1Option

Polarity
CW

Rax(m)
3.6

Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Subcooled[MAP](14:15 ～ 16:45) ECH, NBI
H2,Ar
14:20-15:25 The evaluation of the toroidal uniformity of impurity deposition for effective real-timewall conditioning using the IPD (M. Shoji)
15:25-15:40 Magnetic field configuration changed
15:40-16:45 Impurity transport study in the plasma with an impurity hole by means of TESPEL(D.M. Roque(Ciemat), N. Tamura)
Sequence:3min#Option
12

Polarity
CWCW

Rax(m)
3.6
3.55

Bax(T)
2.75
2.7887gamma
1.25381.253822

DN

Details and Experimental Conditions

Sequence:3min#Option
121

Bq(%)
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): He , GD(After Exp.): None , Cryopump(During Exp.): on
Remarks(IA)Special Requirement: C-pellet
Required Diag.: FIDA, HIBP(TC)LID (cancel)
Required Diag.：TESPEL, SSGP, CXS, DR, BS, PCI(MAP)C samples are exposed to the divertor plasma
LID (cancel, 15:40-16:45)
Required Diag.: Fast camera (2.5-U), Spectroscopy, CXS, BES, TESPEL, HIBP, DR, PCI【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:724) Impurity gas puff
(id:728) Mag. Conf.: 3.55 m =< Rax < 3.6 m(id:731) Mag. Conf.: Using LID coil
(id:760) Insertion of sample, etc: Exposure of a material sample to divertor plasma by the manipulators(id:762) Impurity powder dropper

LHD projectPrepared byDaily Schedule

M. GotoN.TamuraDate2024/4/12(Fri)Experimental Subject

Tomographic analysis of helium atom emission line intensity
electron cyclotron mazer instability

Exp. No.

Experimental Session Group

Session Coordinator

1348

MAP/IAM.Kobayashi[2169] / A.Shimizu[2454]
M.Goto[2290] / K.Ogawa[2229]

89Time Table

1011UP

1213

[MAP]

1415

16

[IA]

1718

192021

DN

Details and Experimental Conditions

Gas[MAP](10:30 ～ 13:45) ECH, NBI
10:30 - 13:45 Tomographic analysis of helium atom emission line intensity (M. Goto)# [Change of Mag. Config.: 3.9m -> 3.75m -> 3.6m] will be done between 10:30 and 13:45.

H2,He,Ar

NBI pattern #7: (#1, #2, #3, #5) - (#1, #2, #3) - (#2, #3)
Sequence:3min#Option123

Polarity
CCW
CCW
CCW

Rax(m)
3.9
3.75
3.6Bax(T)2.5385
2.64
2.75

gamma
1.25381.25381.2538

Bq(%)
100.0
100.0
100.0

Subcooled[IA](13:45 ～ 16:45) ECH, NBI
13:45-16:45 Observation and control of the electron cyclotron mazer instability (H. Igami)# [Change of Mag. Config.: 3.6m, 2.75T -> 3.9m, 2.6308T(Sub-cooled)] will be done between 13:45 and 16:45.
Sequence:3min#12OptionPolarity
CCWCCW

Rax(m)
3.6
3.9Bax(T)2.75
2.6308gamma
1.25381.2538Wall Conditioning

GD(Before Exp.): None , Cryopump(During Exp.): off
Remarks(MAP)CXS, impurity gas puff(IA)MSE【Precautions for today's LHD experiments】(id:724) Impurity gas puff
(id:729) ECH: Low absorption condition(id:736) Mag. Conf.: Subcool conditions (Combined) : Subcool required(id:743) ECH: Fundamental X-mode injection from the high field side(id:748) ECH: off-axis injection (Combined)

22

Bq(%)
100.0100.0

Subcooled✓

H2,Ar