25th 3rd week(03/25/24 - 03/29/24) 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

RemarkH2【Responsible person】N.Tamura /H.Hayashi【Coordinator#1】M.Goto【Coordinator#2】R.Seki【ECH】H.Igami【Gas・vacuum・shutter】A/B【Low temp.】noguchi.hiroki【LID power】M.Kawai/K.Nagahara【Coil power】takami.shigeyuki【central ctrl.】nonomura.miki【data proc.】M.Ohsuna【EXP LAN】inoue.tomoyuki

H2,Ar【Responsible person】M.Osakabe / camera (2.5-U),
H.Hayashi
Spectroscopy, CXS, Sample
manipulator (4.5-U, 10.5-U)【Coordinator#1】C.Suzuki【Coordinator#2】G.Motojima(id:724) Impurity gas puff
【ECH】H.Takahashi(id:725) Impurity powder【Gas・vacuum・shutter】C/Adropper【Low temp.】noguchi.hiroki【LID power】M.Kawai/K.Nagahara (id:760) Insertion of sample,etc: Exposure of a material【Coil power】tanoue.hiroyuki
sample to divertor plasma by【central ctrl.】nonomura.mikithe manipulators【data proc.】M.Ohsuna【EXP LAN】nakamura.osamu

H2,N2,Ne,Ar【Responsible person】T.Seki /H.Hayashi【Coordinator#1】M.Kobayashi【Coordinator#2】K.Mukai【ECH】N.Kenmochi【Gas・vacuum・shutter】B/C【Low temp.】ohba.kouki【LID power】M.Kawai/K.Nagahara【Coil power】takami.shigeyuki【central ctrl.】nonomura.miki【data proc.】M.Ohsuna【EXP LAN】inoue.tomoyuki

H2,Arpellet injection, LID(10:30【Responsible person】M.Isobe /12:00)
H.Hayashi【Coordinator#1】M.Nishiura/T.Kawate【Coordinator#2】T.Kobayashi/M.Goto (TC)Realtime-TS, BS【ECH】R.Yanai【Gas・vacuum・shutter】A/B(IA)gas puff feed-back【Low temp.】noguchi.hirokicontrol【LID power】M.Kawai/K.Nagahara【Coil power】tanoue.hiroyuki(id:731) Mag. Conf.: Using【central ctrl.】nonomura.miki
LID coil【data proc.】M.Ohsuna(id:748) ECH: off-axis【EXP LAN】nakamura.osamu

Sat:None

3/ M
25 o.

Sun:None
Mon:None[IA](10:30 ～ 16:45)ECH, NBI
Energetic particle distribution in EIC, Degradation of fast-ion confinement, Interplay of fast ions and impurities, Anomaly detection of radiation profile

3/ Tu CC26 . W# Opt. Pol.
1CCW
2CCW

Rax
3.6
3.75

Bax
2.75
2.64

gamma
1.25381.2538

Bq
100.0
100.0

SCHe GDDiv
Cryo

3/ W C
27 e. W

Rax
3.75
3.6

Bax
2.64
2.75

gamma
1.25381.2538

Bq
100.0
100.0

SC

None

[MAP](10:30 ～ 16:45)ECH, NBI
Study of edge impurity transport with spectroscopy, Impurity behaviour study in LHD plasmas with W-TESPEL injections# Opt. Pol.
1CW

Rax
3.6

Bax
2.75

gamma1.2538

Bq
100.0

SC

None

3/ Th C
28 . W

DivCryo[IA](10:30 ～ 13:15)ECH, NBI
disturbance triggered by neon doped hydrogen pellet
injection, pellet fuelling efficiency, Energetic Particle
Distribution during EIC

3/ Fr C
29 . W# Opt. Pol.
1CW

Rax
3.6

Bax
2.75

gamma
1.2538

Bq
100.0

SC

[TC](13:15 ～ 15:30)
Demonstration of real-time ECH plasma control by thedata assimilation system ASTI[IA](15:30 ～ 16:45)ECH, NBI
Anomaly detection of radiation profile in radiativecollapse# Opt. Pol.
1CW

# Opt. Pol.
1CW

Rax
3.6

Bax
2.75

gamma
1.2538

Bq
100.0

SC

(id:723) Impurity
pellet/TESPEL(MAP)IPD (B, Li, Si), Fast

[MAP](10:30 ～ 16:45)ECH, NBI
Impurity shielding performance, boron deposition on the divertor plates, spectroscopy of boron hydrides using IPD# Opt. Pol.
1CW
2CW(IA)TESPEL, CXS(Ti, nC), FIDA,ICE, MSE, FILD,BES

Rax
3.75

Bax
2.64

gamma
1.2538Bq
100.0(MAP)CXS, Visible
and VUV/EUV
Spectrometers,TESPEL, SOXMOS(id:723) Impurity
pellet/TESPEL(id:724) Impurity
gas puff(IA)neon doped hydrogenSCDivCryoinjection (Combined)LHD projectPrepared byDaily Schedule

N.Tamura

Date

Experimental Subject

2024/3/26(Tue)Energetic particle distribution in EIC, Degradation of fast-ion
confinement, Interplay of fast ions and impurities, Anomaly detection ofradiation profile

Exp. No.

Experimental Session Group1337

IA89Time Table

10Session Coordinator

M.Goto[2290] / R.Seki[2201]
11UP

121314

15

16

1718

1920

Gas[IA](10:30 ～ 16:45) ECH, NBI
10:30-11:30 Understanding Energetic Particle Distribution during Helically-Trapped Energetic-Ion-Driven
Resistive Interchange Mode (EIC) in LHD Using Newly Developed Imaging Neutral Particle Analyzer (INPA)
11:30-13:20 Degradation of fast-ion confinement depending on NB power without EP-driven instability
13:20-15:00 Interplay of fast ions and impurities in LHD in hydrogen
15:00-15:30 [Change of Mag. Config.]
15:30-16:45 Anomaly detection of radiation profile in radiative collapse
Sequence:3min

OptionPolarity
CCW
CCW

Rax(m)
3.6
3.75

Bax(T)
2.75
2.64

gamma
1.25381.2538

Bq(%)
100.0
100.0

SubcooledWall Conditioning

GD(Before Exp.): None , GD(After Exp.): He , Cryopump(During Exp.): on
Remarks(IA)TESPEL, CXS (Ti, nC), FIDA, ICE, MSE, FILD, BES【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL

22

DN

[IA]

Details and Experimental Conditions

#12

21

H2

LHD projectPrepared byDaily Schedule

C.SuzukiDate2024/3/27(Wed)Experimental Subject

Impurity shielding performance, boron deposition on the divertor
plates, spectroscopy of boron hydrides using IPD

Exp. No.

Experimental Session Group1338

MAP89Time Table

10Session Coordinator

C.Suzuki[2255] / G.Motojima[2142]
11UP

1213

14

15

161718192021DN[MAP]

Details and Experimental Conditions

Gas[MAP](10:30 ～ 16:45) ECH, NBI
10:30-12:15 The investigation of the impurity shielding performance of the LHD peripheral plasma using theImpurity Powder Dropper (M. Shoji)
12:15-14:30 The evaluation of the toroidal uniformity of the boron deposition on the divertor plates for
effective real-time boronization using the impurity powder dropper (M. Shoji)
14:30-16:45 Spectroscopic studies of boron hydrides near plasma-facing materials during boron powder
dropping experiments (T. Kawate)# Change of Mag. Config. will be done between 10:30 and 12:15.

H2,Ar

Sequence:3min#12Option

Polarity
CW
CW

Rax(m)
3.75
3.6

Bax(T)
2.64
2.75

22

gamma
1.25381.2538

Bq(%)
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): He , GD(After Exp.): None , Cryopump(During Exp.): offRemarks(MAP)IPD (B, Li, Si), Fast camera (2.5-U), Spectroscopy, CXS, Sample manipulator (4.5-U, 10.5-U)【Precautions for today's LHD experiments】(id:724) Impurity gas puff
(id:725) Impurity powder dropper(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

2024/3/28(Thu)Study of edge impurity transport with spectroscopy, Impurity behaviour
study in LHD plasmas with W-TESPEL injections

Exp. No.

Experimental Session Group1339

MAP89Time Table

10Session Coordinator

M.Kobayashi[2169] / K.Mukai[2240]
11UP

121314151617181920Gas[MAP](10:30 ～ 16:45) ECH, NBI
10:30-14:30 Study of edge impurity transport by utilizing multiple spectroscopy diagnostics (T. Nishizawa)
14:30-16:45 Impurity behaviour study in LHD plasmas using VUV spectroscopy in experiment with W
TESPEL injections (T. Fornal, N. Tamura)
Sequence:3min

OptionPolarity
CW

Rax(m)
3.6

Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): None , Cryopump(During Exp.): onRemarks(MAP)CXS, Visible and VUV/EUV Spectrometers, TESPEL, SOXMOS【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:724) Impurity gas puff

22

DN

[MAP]

Details and Experimental Conditions#121

H2,N2,Ne,ArLHD projectPrepared byDaily Schedule

M.Nishiura
N.Tamura
T.Kawate

Date

Experimental Subject

2024/3/29(Fri)disturbance triggered by neon doped hydrogen pellet injection, pellet fuelling
efficiency, Energetic Particle Distribution during EIC
Demonstration of real-time ECH plasma control by the data assimilation system ASTI
Anomaly detection of radiation profile in radiative collapse

Exp. No.

Experimental Session GroupSession Coordinator

1340

IA/TC

M.Nishiura[2184] / T.Kobayashi[2231]
T.Kawate[2256] / M.Goto[2290]

89Time Table

1011U
P

12

13

[IA]

14[TC]

15

16[IA]

17

18

19

20

21

DN

Details and Experimental Conditions

Gas[IA](10:30 ～ 13:15) ECH, NBI
10:30-12:00 Spatiotemporal structure of disturbance triggered by neon doped hydrogen pellet
injection (A. Matsuyama, R. Sakamoto)
10:30-12:00 Study of pellet fuelling efficiency dependence on magnetic configuration (N. Panadero, R.
Sakamoto) [Piggy-backed]
12:00-12:10 NBI calibration (3 shots)
12:10-13:10 Energetic Particle Distribution during Helically-Trapped EIC (W. Paenthong, K. Ogawa)

H2,Ar

Sequence:3min#1

OptionPolarity
CW

Rax(m)
3.6

Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Subcooled[TC](13:15 ～ 15:30)
13:10-15:10 Demonstration of real-time ECH plasma control by the data assimilation system ASTI(Murakami)
15:10-15:30 [Change of Mag. config.]

H2

Sequence:3min#1OptionPolarity
CWRax(m)3.6

Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Subcooled[IA](15:30 ～ 16:45) ECH, NBI
15:30-16:45 Anomaly detection of radiation profile in radiative collapse (K. Mukai)
Sequence:3min#Option1

Polarity
CWRax(m)3.75

Bax(T)
2.64

gamma
1.2538

Bq(%)
100.0

Wall Conditioning

GD(Before Exp.): None , Cryopump(During Exp.): onRemarks(IA)neon doped hydrogen pellet injection, LID(10:30-12:00)(TC)Realtime-TS, BS(IA)gas puff feed-back control【Precautions for today's LHD experiments】(id:731) Mag. Conf.: Using LID coil
(id:748) ECH: off-axis injection (Combined)

22

H2

Subcooled