25th 6th week(04/15/24 - 04/19/24) 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

H2,He,
Ar【Responsible person】K.Tanaka /H.Hayashi【Coordinator#1】R.Seki/M.Shoji【Coordinator#2】M.Goto/K.Mukai【ECH】H.Igami【Gas・vacuum・shutter】A/B【Low temp.】ohba.kouki【LID power】M.Kawai/K.Nagahara【Coil power】tanoue.hiroyuki【central ctrl.】nonomura.miki【data proc.】M.Ohsuna【EXP LAN】nakamura.osamu

H2,He【Responsible person】S.Sakakibara Pellet(LiF), CXS(Li/ H.Hayashi
profile, Ion temperature【Coordinator#1】K.Ogawa
profile), DNPA
【Coordinator#2】T.Kawate【ECH】H.Takahashi【Gas・vacuum・shutter】C/A(id:723) Impurity【Low temp.】ohba.koukipellet/TESPEL【LID power】M.Kawai/K.Nagahara (id:749) ICH: Antennae【Coil power】takami.shigeyuki
insertion for plasma【central ctrl.】nonomura.miki
heating by ICH :【data proc.】M.Ohsuna
Subcool required【EXP LAN】inoue.tomoyuki

H2,He,Ar【Responsible person】N.Tamura /(MAP)TESPEL, CXS, HIBP,
H.Hayashipellet(W), Spectrometers,【Coordinator#1】C.Suzuki/Y.Takemura impurity
PCI, CECE【Coordinator#2】M.Kobayashi/N.Kenmochi(id:723) Impurity pellet/TESPEL【ECH】N.Kenmochi(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID【Gas・vacuum・shutter】B/C
coil【Low temp.】ohba.kouki(id:738) Mag. Conf.: Exp. with low【LID power】M.Kawai/K.Nagahara
gamma (Combined)【Coil power】tanoue.hiroyuki(id:752) NBI: Injection into the【central ctrl.】nonomura.mikidischarges with low fields(id:762) Impurity powder dropper【data proc.】M.Ohsuna【EXP LAN】nakamura.osamu

H2,He,Ne,ArW), CXS(H/He, F, Ne), TESPEL【Responsible person】S.Masuzaki /H.Hayashi(TC)Off-axis ECH, LID (14:45-15:15),【Coordinator#1】T.Kobayashi/T.Kawat PCI, CXS, HIBP, Ti crystal, Zeff, FIR,Thomsone【Coordinator#2】M.Nishiura/K.Ogawa (id:723) Impurity pellet/TESPEL【ECH】R.Yanai(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID coil【Gas・vacuum・shutter】A/B(id:747) ECH: EC wave injection for【Low temp.】ohba.kouki
more than 10 s (Combined)【LID power】M.Kawai/K.Nagahara(id:748) ECH: off-axis injection【Coil power】takami.shigeyuki(Combined)(id:749) ICH: Antennae insertion for【central ctrl.】nonomura.miki
plasma heating by ICH : Subcool【data proc.】M.Ohsuna
required【EXP LAN】inoue.tomoyuki

Sat:He GD

4/ M15 o.

Sun:He GD
Mon:None[IA](10:30 ～ 12:30)ECH, NBI, ICH
Investigation of instability driven by ICRF fast ion# Opt. Pol.
1CWRax3.6Bax
2.5

gamma
1.2538

4/ Tu C
16 . W

Bq
100.0

SC

[MAP](12:30 ～ 13:30)ECH, NBI, ICH
Exposure of material samples into the LHD edge
plasma by means of the manipulator# Opt. Pol.
1CW

Rax
3.6

Bax
2.75

gamma
1.2538Bq
100.0[IA](13:30 ～ 16:45)ECH, NBI, ICH
measurement of fast ion distribution using the newly
installed Imaging Neutral Particle Analyzer
SC# Opt. Pol.
1CW
2CW
3 ✓ CW

Rax
3.55
3.6
3.9

Bax
2.78871.25
2.5385gamma
1.25381.25381.2538

Bq
100.0
100.0
100.0

SCNone# Opt. Pol.
CCW
CCW

Rax
3.6
3.75

Bax
2.75
2.64

gamma
1.25381.2538

Bq
100.0
100.0

SC

H2 GD

[IA](10:30 ～ 12:15)ECH, NBI
Collisionality dependence of shielding threshold of external RMP

4/ Th C18 . W# Opt. Pol.
1CW
2CW
3 ✓ CW

Rax
3.6
3.6
3.6

Bax
0.9
0.75
0.5

gamma
1.129
1.129
1.129

Bq
100.0
100.0
100.0

SC

[IA](10:30 ～ 14:45)ECH, NBI, ICH
Interplay of fast ions and impurities, Impurity exhaust by 3-ion heating

4/ Fr C19 . W# Opt. Pol.
1CW
2CW

Rax
3.6
3.6

Bax
2.75
2.68

gamma
1.25381.2538

Bq
100.0
100.0

SCRax
3.9
3.75
3.6

Bax
1.0
2.64
2.75

gamma
1.25381.25381.2538

Bq
100.0
100.0
100.0

SCHe GDDivCryo(IA)ICH, EUV/VUV spectrometers(Fe,[TC](14:45 ～ 16:45)ECH, NBI, ICH
electron-scale turbulence characteristics and its influence to transport, turbulence
driven transport between LHD and W7-X# Opt. Pol.
1CW

Rax
3.6Bax2.75

gamma
1.2538Bq100.0(id:728) Mag. Conf.: 3.55 m =<Rax < 3.6 m(id:747) ECH: EC wave injection
for more than 10 s (Combined)(id:749) ICH: Antennae insertion
for plasma heating by ICH :Subcool required(id:760) Insertion of sample, etc:
Exposure of a material sample todivertor plasma by the
manipulators(IA)CXS, FTS, LID(10:30-12:15)[MAP](12:15 ～ 16:45)ECH, NBI
Calibration of Solar EUV Spectrometers, Transport analysis of heavy impurity ions,Impact of turbulence reduction via boron injection# Opt. Pol.
1CW
2CW
3CW

(MAP)Sample manipulator (Port10.5L)(IA)Impurity[IA](10:30 ～ 16:45)ECH, NBI, ICH
Observation of gamma-ray emission from Li-H reaction for fast ion diagnostics/Understanding the dependence of fast ion distribution on various magnetic field
configurations using the newly installed Imaging Neutral Particle Analyzer (INPA)
124/ W CC
17 e. W

(IA)DNPA, HIBP, CXSSCNoneLHD projectPrepared byDaily ScheduleN.Tamura

Date

Experimental SubjectInvestigation of instability driven by ICRF fast ion
Exposure of material samples into the LHD edge plasma by means of the manipulator
measurement of fast ion distribution using the newly installed Imaging Neutral Particle
Analyzer

2024/4/16(Tue)Exp. No.

Experimental Session GroupSession Coordinator

1349

IA/MAP

R.Seki[2201] / M.Goto[2290]
M.Shoji[2151] / K.Mukai[2240]

89Time Table

10U
P

1112

13

[IA]

[MAP]

1415
[IA]

1617

18

1920

Gas

[IA](10:30 ～ 12:30) ECH, NBI, ICH
10:30-12:00 Investigation of instability driven by ICRF fast ion (R. Seki)
12:00-12:10 NBI calib.(3 shots)
12:10-12:30 [Change of Mag. Config.: 2.5 T -> 2.75 T]
Polarity
CWRax(m)3.6Bax(T)
2.5

gamma
1.2538

H2,He,Ar

Bq(%)
100.0

Subcooled[MAP](12:30 ～ 13:30) ECH, NBI, ICH
12:30-13:30 Exposure of material samples into the LHD edge plasma by means of the manipulator(C.P.Dhard (IPP), S. Masuzaki)
Sequence:3min30s#Option1

Polarity
CWRax(m)3.6Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

PolarityCWCWCWRax(m)3.55
3.6
3.9Bax(T)2.78871.25
2.5385gamma
1.25381.25381.2538

Bq(%)
100.0
100.0
100.0

H2,He,Ar

Subcooled[IA](13:30 ～ 16:45) ECH, NBI, ICH
13:30-14:00 [Change of Mag. Config.: 3.6m, 2.75 T -> 3.55m, 2.7887 T]
14:00-15:00 measurement of fast ion distribution using the newly installed Imaging NPA (S. Sangaroon(Mahasarakham Univ.), K. Ogawa)# [Change of Mag. Config.: 3.55m, 2.788T -> 3.9m, 2.5385T] may be done during 14:00-15:00
15:00-15:30 [Change of Mag. Config.: 3.55m, 2.7887T (or 3.9m, 2.5385 T) -> 3.6m, 1.25 T]
15:30-16:45 Investigation of instability driven by ICRF fast ion (R. Seki)
Sequence:3min#Option
123✓

22

DN

Details and Experimental Conditions

Sequence:3min#Option121

H2,He,Ar

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): None , Cryopump(During Exp.): off
Remarks(IA)DNPA, HIBP, CXS(MAP)Sample manipulator (Port 10.5L)【Precautions for today's LHD experiments】(id:728) Mag. Conf.: 3.55 m =< Rax < 3.6 m(id:747) ECH: EC wave injection for more than 10 s (Combined)(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required(id:760) Insertion of sample, etc: Exposure of a material sample to divertor plasma by the manipulators

LHD projectPrepared by

Daily Schedule

N.Tamura

Date

Experimental Subject

2024/4/17(Wed)Observation of gamma-ray emission from Li-H reaction for fast ion
diagnostics/Understanding the dependence of fast ion distribution on various
magnetic field configurations using the newly installed Imaging Neutral Particle
Analyzer (INPA)

Exp. No.

Experimental Session Group1350

IA89Time Table

10Session Coordinator

K.Ogawa[2229] / T.Kawate[2256]
11UP

12131415

1617181920

Gas[IA](10:30 ～ 16:45) ECH, NBI, ICH
10:30-14:15 Observation of gamma-ray emission from Li-H reaction for fast ion diagnostics (H.
Matsuura (Kyushu Univ.), K. Ogawa)
14:15-15:15 Understanding the dependence of fast ion distribution on various magnetic field
configurations using the newly installed Imaging Neutral Particle Analyzer (INPA) (S. Sangaroon(Mahasarakham Univ.), K. Ogawa)
15:15-15:25 NBI Calib. (3 shots)
15:15-15:45 [Change of Mag. Config.: 3.60 m, 2.75 T -> 3.75m, 2.64 T]
15:45-16:45 Understanding the dependence of fast ion distribution on various magnetic field
configurations using the newly installed Imaging Neutral Particle Analyzer (INPA) (S. Sangaroon(Mahasarakham Univ.), K. Ogawa)Polarity
CCW
CCW

Rax(m)
3.6
3.75

Bax(T)
2.75
2.6422DN[IA]

Details and Experimental Conditions

Sequence:3min#Option1221

gamma
1.25381.2538

Bq(%)
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): H2 , Cryopump(During Exp.): off
Remarks(IA)Impurity Pellet(LiF), CXS(Li profile, Ion temperature profile), DNPA
【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required

H2,HeLHD projectPrepared byDaily Schedule

Y.Takemura

DateExperimental Subject

2024/4/18(Thu)Collisionality dependence of shielding threshold of external RMP
Calibration of Solar EUV Spectrometers, Transport analysis of heavy
impurity ions, Impact of turbulence reduction via boron injection

Exp. No.

Experimental Session GroupSession Coordinator

1351

IA/MAP

C.Suzuki[2255] / M.Kobayashi[2169]
Y.Takemura[2167] / N.Kenmochi[2208]

89Time Table

10UP

1112

13

[IA]

1415

16

[MAP]

1718

1920

Gas

[IA](10:30 ～ 12:15) ECH, NBI
10:30-12:15 Collisionality dependence of shielding threshold of external RMP (Y. Takemura)
0.9T→0.75T#including NBI calibration shots
PolarityCWCW
CW

Rax(m)
3.6
3.6
3.6Bax(T)
0.9
0.75
0.5

gamma
1.129
1.129
1.129

Bq(%)
100.0
100.0
100.0

H2

Subcooled[MAP](12:15 ～ 16:45) ECH, NBI
12:15-12:25 [Change of Mag. Config.: 3.6m, 0.75T -> 3.9m, 1.0T]
12:25-12:55 Calibration of Solar EUV Spectrometers and Validation of Diagnostic Capability for Solar HighTemperature Plasmas by LHD Experiments (H. Hara (NAOJ), I. Murakami)
12:55-13:00 NBI calibration (1 shot)
13:00-13:35 [Change of Mag. Config.: 3.9m, 1.0T -> 3.75m, 2.64T]
13:35-15:20 Transport analysis of heavy impurity ions in core plasma (S. Satake)
15:20-15:30 NBI calibration (3 shots)
15:30-15:45 [Change of Mag. Config.: 3.75m, 2.64T -> 3.6m, 2.75T]
15:45-16:45 Study of the impact of turbulence reduction via boron injection on impurity confinement andtransport (D. M. Roque (Ciemat), N. Tamura)# including NBI calibration 1 shot
Sequence:3min#Option12
3

PolarityCW
CW
CW

Rax(m)
3.9
3.75
3.6Bax(T)
1.0
2.64
2.75

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.): onRemarks(IA)CXS, FTS, LID(10:30-12:15)(MAP)TESPEL, CXS, HIBP, impurity pellet(W), Spectrometers, PCI, CECE
【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID coil
(id:738) Mag. Conf.: Exp. with low gamma (Combined)(id:752) NBI: Injection into the discharges with low fields(id:762) Impurity powder dropper

22DN

Details and Experimental Conditions

Sequence:3min#Option123✓

21

H2,He,ArLHD projectPrepared byDaily ScheduleT.Kawate
N.Tamura

Date

Experimental Subject

2024/4/19(Fri)Interplay of fast ions and impurities, Impurity exhaust by 3-ion heating
electron-scale turbulence characteristics and its influence to transport,turbulence driven transport between LHD and W7-X

Exp. No.

Experimental Session Group

Session Coordinator

1352

IA/TCT.Kobayashi[2231] / M.Nishiura[2184]
T.Kawate[2256] / K.Ogawa[2229]

89Time Table

1011UP

1213

[IA]

1415

16

[TC]

17181920

2122

DN

Details and Experimental Conditions

Gas[IA](10:30 ～ 14:45) ECH, NBI, ICH
10:30-12:10 Interplay of fast ions and impurities in LHD in helium (D. Moseev (IPP), K. Tanaka)
12:10-12:20 NBI calibration (3 shots)
12:20-12:40 [Change of Mag. Config.: 3.6m, 2.75T -> 3.6m, 2.68T]
12:40-14:25 Impurity exhaust by 3-ion heating at LHD (D. Moseev (IPP), K. Tanaka)
14:25-14:45 [Change of Mag. Config.: 3.6m, 2.68T -> 3.6m, 2.75T]

H2,He,Ne,ArNBI pattern #3: (#2,#3,#4,#5) - (#2,#3,#4) - (#3,#4)
Sequence:3min#Option
12Polarity
CWCWRax(m)3.6
3.6Bax(T)
2.75
2.68

gamma
1.25381.2538

Bq(%)
100.0
100.0

Subcooled[TC](14:45 ～ 16:45) ECH, NBI, ICH
14:45-15:15 Investigation of electron-scale turbulence characteristics and its influence to transport (T. Nasu)
15:15-15:25 [Change of Discharge Sequence: 3 min -> 3 min 30 sec (Wall DC)]
15:15-16:45 Comparison of turbulence driven transport between LHD and W7-X (H. Sakai)
Sequence:3min, 3min30s(Wall DC)#1

OptionPolarity
CWRax(m)3.6

Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Wall Conditioning

GD(Before Exp.): He , Cryopump(During Exp.): off
Remarks(IA)ICH, EUV/VUV spectrometers(Fe, W), CXS(H/He, F, Ne), TESPEL(TC)Off-axis ECH, LID (14:45-15:15), PCI, CXS, HIBP, Ti crystal, Zeff, FIR, Thomson【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID coil
(id:747) ECH: EC wave injection for more than 10 s (Combined)(id:748) ECH: off-axis injection (Combined)(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required

SubcooledHe,Ar