25th 7th week(04/22/24 - 04/26/24) schedule for LHD experiment
Date

Weekly report :Schedule of the day

Day Btof dire
the ctio
week nMorning (～ 12:15)

Afternoon (12:15 ～ 16:45)

WallGasExperiment implementation system

RemarkH2,Ar【Responsible person】T.Seki /H.Hayashi【Coordinator#1】R. Yanai【Coordinator#2】G. Motojima【ECH】M.Nishiura【Gas・vacuum・shutter】B/C【Low temp.】noguchi.hiroki【LID power】M.Kawai/K.Nagahara【Coil power】takami.shigeyuki【central ctrl.】ogawa.hideki【data proc.】M.Ohsuna【EXP LAN】inoue.tomoyuki

H2,Ar【Responsible person】M.Isobe /H.Hayashi【Coordinator#1】N.Kenmochi【Coordinator#2】T.Kawate【ECH】H.Takahashi【Gas・vacuum・shutter】A/B【Low temp.】noguchi.hiroki【LID power】M.Kawai/K.Nagahara【Coil power】tanoue.hiroyuki【central ctrl.】ogawa.hideki【data proc.】M.Ohsuna【EXP LAN】nakamura.osamu

H2,Ar(TC)LID(cancel, 10:30【Responsible person】M.Isobe /13:00), Thomson, CXS,
H.Hayashi【Coordinator#1】M.Yoshinuma/M.Got FIR, Crystal(Ti), Zeff, HIBP,oPCI, BS, DBS, BES【Coordinator#2】H.Nakano/N.Kenmochi(IA)HIBP, FIDA, CXS【ECH】N.Kenmochi【Gas・vacuum・shutter】C/A(id:724) Impurity gas puff
【Low temp.】noguchi.hiroki(id:728) Mag. Conf.: 3.55
【LID power】M.Kawai/K.Nagaharam =< Rax < 3.6 m【Coil power】takami.shigeyuki(id:748) ECH: off-axis【central ctrl.】ogawa.hideki
injection (Combined)【data proc.】M.Ohsuna【EXP LAN】inoue.tomoyuki

H2,Ne,Ar(MAP)Impurity pellet, Fast
【Responsible person】S.Sakakibara TS, EUV/VUV & Div. VIS/ H.Hayashi
spectrometers (set for【Coordinator#1】R.T. Ishikawa
neon line emissions),【Coordinator#2】K. Mukai
Divertor LPs, Bolometers【ECH】R.Yanai(id:723) Impurity【Gas・vacuum・shutter】B/C
pellet/TESPEL【Low temp.】noguchi.hiroki(id:724) Impurity gas puff
【LID power】M.Kawai/K.Nagahara (id:752) NBI: Injection into
【Coil power】tanoue.hiroyuki
the discharges with low【central ctrl.】ogawa.hideki
fields【data proc.】M.Ohsuna【EXP LAN】nakamura.osamu

Sat:H2 GD

4/ M22 o.

Sun:
H2 GD
Mon:None[MAP](10:30 ～ 16:45)ECH, NBI
Database construction of boron ion emission lines, Effect of boron impurity powder injection on tungsten impurity transport in the LHD core plasma, Spectroscopic
analysis of divertor detachment, The sustainment of divertor detachment by injection of impurity dust particles into the magnetic island in the LHD peripheral plasmausing the IPD# Opt. Pol.
CW
CW
CW

4/ Tu C 12
23 . W 3

Rax
3.6
3.9
3.9

Bax
2.75
2.5385
1.375

gamma
1.25381.25381.2538Bq100.0
100.0
100.0SCHe GD[IA](10:30 ～ 16:45)ECH, NBI
Investigation of turbulence spreading phenomena by gradient scan experiments, Stabilization of intrinsic detachment in high-beta operation, Impact of enhanced
stochastization in outward-shifted configuration on the detachment density threshold

4/ W C
24 e. W

# Opt. Pol.
1
CW
2
CW
3
CW
4
CW
5CW
6 ✓ CW
7 ✓ CW

Rax
3.75
3.6
3.6
3.9
3.9
3.6
3.9

Bax
2.64
1.375
1.0
1.375
1.0
2.75
2.5385gamma
1.25381.25381.25381.25381.25381.25381.2538

Bq
100.0
100.0
100.0
100.0
100.0
100.0100.0SCNoneDiv
Cryo[TC](10:30 ～ 14:15)ECH, NBI
Electron-scale turbulence and its influence to transport, Effect of magnetic field
geometry on zonal flow

4/ Th C
25 . W# Opt. Pol.
1
CW
2CW

Rax
3.6
3.7

Bax
2.75
2.6757gamma
1.25381.2538

Bq
100.0
100.0

[IA](14:15 ～ 16:45)ECH, NBI
Fast ion measurements in quiescent plasmas
SC# Opt. Pol.
1CW
2CW
3 ✓ CW

Rax
3.7
3.55
3.6

Bax
2.67572.78872.75

gamma
1.25381.25381.2538

Bq
100.0
100.0
100.0SC

NoneDivCryo[MAP](10:30 ～ 16:45)ECH, NBI
Multi-wavelength spectroscopy of highly charged ions, Solid hydrogen pellet injection, Pellet fuelling efficiency, Edge impurity transport

4/ Fr C
26 . W# Opt. Pol.
1
CW
2CW
3CW
4
CW

Rax
3.6
3.6
3.6
3.6

Bax
2.75
2.0
1.375
1.0

gamma
1.25381.25381.25381.2538

Bq
100.0
100.0
100.0
100.0

SCDiv
Cryo(MAP)Spectroscopy, CXS (Ti,Er), Fast camera, IPD (B, Si),impurity pellet (B, W), LID(13:50-16:45)(id:723) Impurity
pellet/TESPEL(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID
coil(id:752) NBI: Injection into thedischarges with low fields(id:762) Impurity powder
dropper(IA)Special Requirements:
modulation of NBI#4, #5 for
CXS diagnostics
Required Diag.: Fast CXS, Fast
TS, PCI, BS(position scan),
HIBP, MSE, DBS. CXS (pref.),
Divertor LPs in fast Isat mode
(id:724) Impurity gas puff
(id:748) ECH: off-axis injection(Combined)(id:752) NBI: Injection into thedischarges with low fields

LHD projectPrepared by

Daily Schedule

R.Yanai

Date

Experimental Subject

2024/4/23(Tue)

Database construction of boron ion emission lines, Effect of boron impurity powder
injection on tungsten impurity transport in the LHD core plasma, Spectroscopic analysis ofdivertor detachment, The sustainment of divertor detachment by injection of impurity dust
particles into the magnetic island in the LHD peripheral plasma using the IPD

Exp. No.

Experimental Session Group1353

MAP89Time Table

10Session CoordinatorR. Yanai[2163] / G. Motojima[2142]
11UP

12131415161718192021D
N

[MAP]

Details and Experimental Conditions

Gas[MAP](10:30 ～ 16:45) ECH, NBI
H2,Ar
10:30-11:30 Database construction of boron ion emission lines (M. Goto)
11:30-11:40 NBI calib. (3 shots)
11:40-13:30 Effect of boron impurity powder injection on tungsten impurity transport in the LHD
core plasma (T. Oishi (Tohoku Univ.))
13:30-13:50 [Change of Mag. Config.: 3.6 m, 2.75 T -> 3.9 m, 2.5385 T]
13:50-14:50 Spectroscopic analysis of divertor detachment (M. Goto)
14:50-15:10 [Change of Mag. Config.: 3.9 m, 2.5385 T -> 3.9 m, 1.375 T]
15:10-16:45 The sustainment of divertor detachment by injection of impurity dust particles into
the magnetic island in the LHD peripheral plasma using the IPD (M. Shoji)
Sequence:3min#Option123

PolarityCW
CW
CW

Rax(m)
3.6
3.9
3.9

Bax(T)
2.75
2.5385
1.375

gamma
1.25381.25381.2538

Bq(%)
100.0
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): He , Cryopump(During Exp.): off
Remarks(MAP)Spectroscopy, CXS (Ti, Er), Fast camera, IPD (B, Si), impurity pellet (B, W), LID (13:50-16:45)【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

22

LHD projectPrepared byDaily ScheduleN.Tamura

Date

Experimental Subject

2024/4/24(Wed)

Investigation of turbulence spreading phenomena by gradient scan experiments,
Stabilization of intrinsic detachment in high-beta operation, Impact of enhanced
stochastization in outward-shifted configuration on the detachment density
thresholdExp. No.

Experimental Session Group1354

IA89Time Table

10Session Coordinator

N.Kenmochi[2208] / T.Kawate[2256]
11U
P

1213

14

15

16

17

18

1920

2122

DN

[IA]

Details and Experimental Conditions

Gas[IA](10:30 ～ 16:45) ECH, NBI
10:30-14:25 Investigation of turbulence spreading phenomena by gradient scan experiments (N. Kenmochi)
14:25-14:35 NBI calib. (3 shots)
14:35-14:55 [Change of Mag. Config.: 3.75m, 2.64T -> 3.6m, 1.375T]
14:55-15:40 Stabilization of intrinsic detachment in high-beta operation(A. Knieps (FZJ), Y. Takemura)# [Change of Mag. Strength.: 1.375T -> 1T ] will be done between 14:55 and 15:40.
15:40-15:50 [Change of Mag. Config.: 3.6m, 1T -> 3.9m, 1.375T]
15:50-16:45Impact of enhanced stochastization in outward-shifted configuration on the detachment density
threshold(A. Knieps, Y. Takemura)# [Change of Mag. Strength.: 1.375T -> 1T ] will be done between 15:50 and 16:45.

H2,Ar

Sequence:3min

#1234
56
7Option✓✓Polarity
CWCW
CW
CW
CW
CW
CW

Rax(m)
3.75
3.6
3.6
3.9
3.9
3.6
3.9

Bax(T)
2.64
1.375
1.0
1.375
1.0
2.75
2.5385gamma
1.25381.25381.25381.25381.25381.25381.2538

Bq(%)
100.0
100.0
100.0
100.0
100.0
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): He , GD(After Exp.): None , Cryopump(During Exp.): onRemarks(IA)Special Requirements: modulation of NBI#4, #5 for CXS diagnostics
Required Diag.: Fast CXS, Fast TS, PCI, BS(position scan), HIBP, MSE, DBS. CXS (pref.), Divertor LPs in fast
Isat mode【Precautions for today's LHD experiments】(id:724) Impurity gas puff
(id:748) ECH: off-axis injection (Combined)(id:752) NBI: Injection into the discharges with low fields

LHD projectPrepared byDaily Schedule

N.TamuraDate2024/4/25(Thu)

Experimental Subject

Electron-scale turbulence and its influence to transport, Effect ofmagnetic field geometry on zonal flow
Fast ion measurements in quiescent plasmas

Exp. No.

Experimental Session Group

Session Coordinator

1355

TC/IA

M.Yoshinuma[2172] / H.Nakano[2209]
M.Goto[2290] / N.Kenmochi[2208]

89Time Table

1011U
P

1213

[TC]

1415
[IA]

1617

18

19

20

Gas

[TC](10:30 ～ 14:15) ECH, NBI
10:30-13:00 Investigation of electron-scale turbulence and its influence on transport (T. Nasu)
13:00-14:15 Verification of the effect of magnetic field geometry on zonal flow in 3D confined
configuration (S. Satake)Polarity
CW
CW

Rax(m)
3.6
3.7Bax(T)
2.75
2.6757gamma
1.25381.2538

Bq(%)
100.0
100.0

PolarityCW
CW
CW

Rax(m)
3.7
3.55
3.6

Bax(T)
2.67572.78872.75

gamma
1.25381.25381.2538

Bq(%)
100.0
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): None , Cryopump(During Exp.): on
Remarks(TC)LID(cancel, 10:30-13:00), Thomson, CXS, FIR, Crystal(Ti), Zeff, HIBP, PCI, BS, DBS, BES(IA)HIBP, FIDA, CXS【Precautions for today's LHD experiments】(id:724) Impurity gas puff
(id:728) Mag. Conf.: 3.55 m =< Rax < 3.6 m(id:748) ECH: off-axis injection (Combined)

H2,Ar

Subcooled[IA](14:15 ～ 16:45) ECH, NBI
14:15-16:45 Diagnosis of fast ions in quiescent plasmas for comparison to predicted neoclassicalconfinement (W. Hayashi (UCI), M. Osakabe)# [Change of Mag. Config.: 3.7m, 2.6757T -> 3.6m, 2.75T(Option) -> 3.55m, 2.7887T] will beduring 14:15-16:45
Sequence:3min#Option123✓

22DN

Details and Experimental Conditions

Sequence:3min#Option1221

H2

LHD projectPrepared byDaily Schedule

N.Tamura

DateExperimental Subject

2024/4/26(Fri)Multi-wavelength spectroscopy of highly charged ions, Solid hydrogenpellet injection, Pellet fuelling efficiency, Edge impurity transport

Exp. No.

Experimental Session Group1356

MAP
89Time Table

10Session Coordinator

R.T. Ishikawa[2576] / K. Mukai[2240]
11UP

12

13

14

15

16

1718

19

20

2122

DN[MAP]

Details and Experimental Conditions

Gas[MAP](10:30 ～ 16:45) ECH, NBI
10:30-11:27 Multi-wavelength spectroscopy of highly charged ions (I. Murakami)
11:27-11:36 NBI calib. (3 shots)
11:36-13:30 Solid hydrogen pellet injection in the extended operational regime (H. Yamada(U.
Tokyo), R. Sakamoto)
11:36-13:30 Pellet fuelling efficiency dependence on magnetic configuration (N. Panadero(Ciemat), R. Sakamoto) [piggy-backed]
13:30-13:45 [Change of Mag. Config.: 3.6 m, 2.75 T -> 3.6 m, 2.0 T]
13:45-15:30 Solid hydrogen pellet injection in the extended operational regime (H. Yamada (U.
Tokyo), R. Sakamoto)
15:30-15:45 [Change of Mag. Config.: 3.6 m, 2.0 T -> 3.6 m, 1.375 T]
15:45-16:45 Edge impurity transport in impurity-seeded detachment (E. Wang (FZJ), Goto)# [Change of Mag. Config.: 1.375 T -> 1.0 T] will be done during 15:45-16:45

H2,Ne,Ar

NBI pattern #7: (#1, #2, #3, #4, #5) - (#1, #2, #3, #5) - (#1, #2, #3) - (#1, #2)
Sequence:3min#Option
12
34

Polarity
CW
CW
CW
CW

Rax(m)
3.6
3.6
3.63.6Bax(T)
2.75
2.0
1.375
1.0

gamma
1.25381.25381.25381.2538

Bq(%)
100.0
100.0
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , Cryopump(During Exp.): onRemarks(MAP)Impurity pellet, Fast TS, EUV/VUV & Div. VIS spectrometers (set for neon line emissions), Divertor
LPs, Bolometers【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:724) Impurity gas puff
(id:752) NBI: Injection into the discharges with low fields