25th 2nd week(03/18/24 - 03/22/24) 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

3/ M
18 o.

Sun:
None
Mon:
None
[TC](10:30 ～ 14:30)ECH, NBI, ICH
density peaking characteristics# Opt. Pol.
1
CW

Rax
3.6

Bax
2.75

gamma
1.2538

Bq
100.0

SC

# Opt. Pol.
1CW
2CW

3/ Tu C19 . W

Rax
3.6
3.75

Bax
2.75
2.64

gamma
1.25381.2538Bq100.0
100.0# Opt. Pol.
1CCW
2CCW

Rax
3.6
3.6

Bax
2.75
1.375

gamma
1.25381.2538

Bq
100.0
100.0

SCH2,Ar

carbon pellet, BL4(one-sided【Responsible person】M.Isobe /operation)
H.Hayashi【Coordinator#1】C.Suzuki/T.Tokuzawa (MAP)Fast camera (2.5-U),【Coordinator#2】G.Motojima/M.Yoshi Spectroscopy, CXS
numa(id:723) Impurity pellet/TESPEL【ECH】H.Igami(id:725) Impurity powder dropper(id:729) ECH: Low absorption【Gas・vacuum・shutter】C/Acondition【Low temp.】ohba.kouki(id:737) ECH: Commissioning【LID power】M.Kawai/K.Nagahara(alignment, profile check)【Coil power】tanoue.hiroyuki(id:746) ECH: EC wave Injection fromthe Port 1.5Uo antenna【central ctrl.】maeno.hiroya(id:748) ECH: off-axis injection【data proc.】M.Ohsuna(Combined)【EXP LAN】nakamura.osamu(id:749) ICH: Antennae insertion for

H2,
N2,Ne,Ar,Kr,
Xe【Responsible person】M.Osakabe /(MAP)LID(14:55-16:45)
H.Hayashi
Impurity gas puff
【Coordinator#1】Y.Hayashi/T.Kawate (id:724)(id:729) ECH: Low absorption【Coordinator#2】K.Mukai/Y.Takemura condition(id:731) Mag. Conf.: Using LID coil
【ECH】M.Nishiura(id:737) ECH: Commissioning【Gas・vacuum・shutter】B/C(alignment, profile check)【Low temp.】moriuchi.sadatomo(id:746) ECH: EC wave Injection fromthe Port 1.5Uo antenna【LID power】M.Kawai/K.Nagahara(id:748) ECH: off-axis injection【Coil power】takami.shigeyuki(Combined)【central ctrl.】maeno.hiroya(id:749) ICH: Antennae insertion for【data proc.】M.Ohsuna
plasma heating by ICH : Subcool
required【EXP LAN】inoue.tomoyuki

H2,Ar【Responsible person】S.Sakakibara /(id:723) Impurity pellet/TESPEL
H.Hayashi(id:724) Impurity gas puff
【Coordinator#1】G.Motojima/K.Ogawa (id:728) Mag. Conf.: 3.55 m =< Rax <【Coordinator#2】M.shohji/N.Kenmoch 3.6 m(id:729) ECH: Low absorption
icondition【ECH】N.Kenmochi(id:731) Mag. Conf.: Using LID coil
(id:737) ECH: Commissioning【Gas・vacuum・shutter】A/B(alignment, profile check)【Low temp.】ohba.kouki(id:746) ECH: EC wave Injection from
【LID power】M.Kawai/K.Nagahara
the Port 1.5Uo antenna【Coil power】tanoue.hiroyuki(id:748) ECH: off-axis injection(Combined)【central ctrl.】maeno.hiroya(id:749) ICH: Antennae insertion for【data proc.】M.Ohsuna
plasma heating by ICH : Subcool【EXP LAN】inoue.tomoyuki
required

H2,Ar

HIBP, MSE, NBI#3 for MSE【Responsible person】K.Tanaka /modulation of NBI#4 and #5
H.Hayashi【Coordinator#1】M.Yoshinuma/R.Seki (IA)pellet, BES, CXS, HIBP, MSE,【Coordinator#2】C.Suzuki/N.Kenmoch Neutral Particle Diagnostics(DNPA,FIDA)
i【ECH】R.Yanai(id:729) ECH: Low absorption
condition【Gas・vacuum・shutter】C/A(id:737) ECH: Commissioning【Low temp.】ohba.kouki(alignment, profile check)【LID power】M.Kawai/K.Nagahara(id:743) ECH: Fundamental X-mode【Coil power】takami.shigeyuki
injection from the high field side(id:746) ECH: EC wave Injection from【central ctrl.】maeno.hiroya
the Port 1.5Uo antenna【data proc.】M.Ohsuna(id:748) ECH: off-axis injection【EXP LAN】nakamura.osamu(Combined)

SCNone
DivCryo[IA](10:30 ～ 14:15)ECH, NBI, ICH
ECH commissioning, Interactions of energetic ions with Alfven eigenmodes

3/ W CC
20 e. W(TC)Impurity Pellet, HIBP, CXS,[MAP](14:30 ～ 16:45)ECH, NBI
Investigation of the impurity shielding performance of the LHD peripheral plasmausing the IPD(IA)ice pellet injection[MAP](14:45 ～ 16:45)ECH, NBI
Effect of impurity seeding for divertor detachment on anomaly detection ofradiative collapse# Opt. Pol.
1CCWRax3.65

Bax2.71

gamma
1.2538

Bq
100.0

SC

None

(id:757) ECH: Optical Vortex[MAP](10:30 ～ 14:30)ECH, NBI, ICH
ECH/ICH commissioning, Impurity behaviour study with triple TESPEL injection# Opt. Pol.
1CW

Rax
3.6

Bax
2.75

gamma
1.2538

Bq
100.0

SC

# Opt. Pol.
1CW
2 ✓ CW

3/ Th C
21 . W

Rax
3.55
3.58

Bax
2.78872.7654gamma
1.25381.2538

Bq
100.0
100.0

SC

NoneDiv
Cryo[TC](10:30 ～ 14:45)ECH, NBI, ICH
ECH comissioning, Investigation of turbulence and heat propagation
characteristics, Non-local heat transport from the peripheral region.

3/ Fr C22 . W(IA)LID(14:39-16:45)[IA](14:45 ～ 16:45)ECH, NBI
Investigation of cross-scale interaction between electron-scale and ion-scale
turbulence# Opt. Pol.
1CW

Rax
3.6

Bax
2.75

gamma
1.2538(TC)fast TS, CXS, BS(position scan),[IA](14:45 ～ 16:45)ECH, NBI
Fast-ion losses induced by pellet injection on density limit.
Bq
100.0

SC

# Opt. Pol.
1CW

Rax
3.6

Bax
2.75

gamma
1.2538Bq
100.0

SCNoneLHD projectPrepared byDaily Schedule

T.Tokuzawa
N.TamuraDate2024/3/19(Tue)Experimental Subject

density peaking characteristics
Investigation of the impurity shielding performance of the LHD
peripheral plasma using the IPD

Exp. No.

Experimental Session GroupSession Coordinator

1333

TC/MAP

C.Suzuki[2255] / G.Motojima[2142]
T.Tokuzawa[2217] / M.Yoshinuma[2172]

89Time Table

1011UP

1213

[TC]

1415

16

[MAP]

1718

19

20

21

DN

Details and Experimental Conditions

Gas[TC](10:30 ～ 14:30) ECH, NBI, ICH
10:30-12:15 ECH/ICH commissioning (M. Nishiura, T. Seki)
12:15-13:20 Investigation of electron heat pulse propagation in density peaking plasma in LHD (R. Yanai)
13:20-14:30 Study on core density peaking and flattening in plasmas (M. Nishiura)

H2,Ar

Sequence:3min#1

OptionPolarity
CWRax(m)3.6

Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Subcooled[MAP](14:30 ～ 16:45) ECH, NBI
14:30 - 16:45 Investigation of the impurity shielding performance of the LHD peripheral plasmausing the IPD (M. Shoji)
Sequence:3min#Option
12

Polarity
CW
CW

Rax(m)
3.63.75Bax(T)
2.75
2.64

gamma
1.25381.2538

22

Bq(%)
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): None , Cryopump(During Exp.): onRemarks(TC)Impurity Pellet, HIBP, CXS, carbon pellet, BL4(one-sided operation)(MAP)Fast camera (2.5-U), Spectroscopy, CXS【Precautions for today's LHD experiments】(id:723) Impurity pellet/TESPEL(id:725) Impurity powder dropper(id:729) ECH: Low absorption condition(id:737) ECH: Commissioning (alignment, profile check)(id:746) ECH: EC wave Injection from the Port 1.5Uo antenna(id:748) ECH: off-axis injection (Combined)(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required(id:757) ECH: Optical Vortex injection

H2

LHD projectPrepared byDaily Schedule

N.Tamura

Date

Experimental Subject

2024/3/20(Wed)ECH commissioning, Interactions of energetic ions with Alfven eigenmodes
Effect of impurity seeding for divertor detachment on anomaly detection ofradiative collapse

Exp. No.

Experimental Session GroupSession Coordinator

1334

IA/MAP

Y.Hayashi[2121] / K.Mukai[2240]
T.Kawate[2256] / Y.Takemura[2167]

89Time Table

1011UP

1213[IA]

1415
[MAP]

1617181920

Gas[IA](10:30 ～ 14:15) ECH, NBI, ICH
10:30-12:15 ECH commissioning (M. Nishiura)
12:15-13:15 Study of interactions of energetic ions with stable or weakly unstable Alfven
eigenmodes in high density LHD plasmas produced by ice pellet injection (K. Toi, K. Ogawa)
13:15-13:45 [Change of Mag. Config., 2.75T -> 1.375T]
13:45-14:15 Study of interactions of energetic ions with stable or weakly unstable Alfven
eigenmodes in high density LHD plasmas produced by ice pellet injection (K. Toi, K. Ogawa)
14:15-14:55 [Change of Mag. Config., 3.6m,1.375T -> 3.65m,2.71T]

Polarity
CCW
CCW

Rax(m)
3.6
3.6

Bax(T)
2.75
1.375

gamma
1.25381.2538

Bq(%)
100.0
100.0

Polarity
CCW

Rax(m)
3.65

Bax(T)
2.71

gamma
1.2538

Bq(%)
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): None , Cryopump(During Exp.): offRemarks(IA)ice pellet injection(MAP)LID(14:55-16:45)【Precautions for today's LHD experiments】(id:724) Impurity gas puff
(id:729) ECH: Low absorption condition(id:731) Mag. Conf.: Using LID coil
(id:737) ECH: Commissioning (alignment, profile check)(id:746) ECH: EC wave Injection from the Port 1.5Uo antenna(id:748) ECH: off-axis injection (Combined)(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required(id:757) ECH: Optical Vortex injection

H2

Subcooled[MAP](14:45 ～ 16:45) ECH, NBI
14:55-16:45 Effect of impurity seeding for divertor detachment on anomaly detection of radiative
collapse (K. Mukai)
Sequence:3min#Option122DN

Details and Experimental Conditions

Sequence:3min#Option1221

H2,N2,Ne,Ar,Kr,XeLHD projectPrepared byDaily Schedule

N.Tamura

Date

Experimental Subject

2024/3/21(Thu)

ECH/ICH commissioning, Impurity behaviour study with triple TESPEL injection
Investigation of cross-scale interaction between electron-scale and ion-scale
turbulenceExp. No.

Experimental Session GroupSession Coordinator

1335

MAP/IAG.Motojima[2142] / M.shohji[2151]
K.Ogawa[2229] / N.Kenmochi[2208]

89Time Table

1011UP

1213[MAP]

1415[IA]

1617181920

Gas[MAP](10:30 ～ 14:30) ECH, NBI, ICH
10:30-12:15 ECH/ICH commissioning(Nishiura, Seki)
12:15-14:18 Impurity behaviour study with triple TESPEL injection(Kubkowska, Tamura)
14:18-14:27 NBI calib. 3 shots
14:27-14:39 [Change of Mag. Config., 3.6m, 2.75T -> 3.55m, 2.7887T]
Polarity
CWRax(m)3.6Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Polarity
CWCW

Rax(m)
3.55
3.58Bax(T)2.78872.7654gamma
1.25381.2538

Bq(%)
100.0
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , GD(After Exp.): None , Cryopump(During Exp.): onRemarks(IA)LID(14:39-16:45)【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:729) ECH: Low absorption condition(id:731) Mag. Conf.: Using LID coil
(id:737) ECH: Commissioning (alignment, profile check)(id:746) ECH: EC wave Injection from the Port 1.5Uo antenna(id:748) ECH: off-axis injection (Combined)(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required(id:757) ECH: Optical Vortex injection

H2,Ar

Subcooled[IA](14:45 ～ 16:45) ECH, NBI
14:39-16:45 Investigation of cross-scale interaction between electron-scale and ion-scale
turbulence(Nasu, Tokuzawa)
Sequence:3min#Option
12✓

22

DN

Details and Experimental Conditions

Sequence:3min#Option121

H2,Ar

LHD projectPrepared byDaily Schedule

H.IgamiN.Tamura

Date

Experimental Subject

2024/3/22(Fri)ECH comissioning, Investigation of turbulence and heat propagation
characteristics, Non-local heat transport from the peripheral region.
Fast-ion losses induced by pellet injection on density limit.

Exp. No.

Experimental Session Group

Session Coordinator

1336

TC/IA

M.Yoshinuma[2172] / C.Suzuki[2255]
R.Seki[2201] / N.Kenmochi[2208]

89Time Table

1011UP

1213

[TC]

1415
[IA]

161718

19

20

21

DN

Details and Experimental Conditions

Gas[TC](10:30 ～ 14:45) ECH, NBI, ICH
10:30 - 12:15 ECH comissioning. (M.Nishiura, T. Seki)
12:15 - 12:24 NBI calib.
12:24 MSE calib.
12:35 - 13:40 Investigation of turbulence and heat propagation characteristics. (N. Kenmochi)
13:40 - 14:40 Non-local heat transport from the peripheral region. (H. Igami)

H2,Ar

NBI pattern: #2, (#2, #3, #4, #5) - (#3, #4, #5) - (#3, #4)
Sequence:3min#Option1

Polarity
CW

Rax(m)
3.6

Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Subcooled[IA](14:45 ～ 16:45) ECH, NBI
14:40 - 16:45 Fast-ion losses induced by pellet injection on density limit. (B.L.Miranda, N. Tamura)
Sequence:3min#1Option

Polarity
CWRax(m)3.6

Bax(T)
2.75

22gamma
1.2538

Bq(%)
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): None , Cryopump(During Exp.): off
Remarks(TC)fast TS, CXS, BS(position scan), HIBP, MSE, NBI#3 for MSE modulation of NBI#4 and #5(IA)pellet, BES, CXS, HIBP, MSE, Neutral Particle Diagnostics(DNPA, FIDA)【Precautions for today's LHD experiments】(id:729) ECH: Low absorption condition(id:737) ECH: Commissioning (alignment, profile check)(id:743) ECH: Fundamental X-mode injection from the high field side(id:746) ECH: EC wave Injection from the Port 1.5Uo antenna(id:748) ECH: off-axis injection (Combined)(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required(id:757) ECH: Optical Vortex injection

H2,Ar