25th 15th week(06/17/24 - 06/21/24) schedule for LHD experiment
Date

Weekly report :Schedule of the dayDay Btof direthe ctioweek nMorning (～ 12:15)

Afternoon (12:15 ～ 16:45)

WallGasExperiment implementation system

Remark

Sat:
None

6/ M
17 o.

Sun:
None
Mon:
None
(IA)

[IA](10:30 ～ 16:45)ECH, NBI, ICH
Construction of the experimental scaling law of the external RMP penetration threshold, Stochastic acceleration using non-resonant microwave heating, Plasma shapeeffect on bootstrap current in high collisional regime in LHD

6/ Tu C18 . W# Opt. Pol.
1CW
2CW
3CW
4CW
5CW
6 ✓ CW
7 ✓ CW
8 ✓ CWRax
3.6
3.6
3.6
3.6
3.6
3.6
3.6
3.6

Bax
1.8
1.0
0.6
0.5
2.64
1.5
0.6
0.75

gamma
1.25381.25381.25381.25381.25381.25381.17391.1739

Bq
100.0
100.0
100.0
100.0
0.0
100.0
100.0
100.0

SCHe GD

LID, CXS7(Vp, Vt)【Responsible person】S.Sakakibara 10:25-12:50
13:40-14:40 ICH startup, ECH non/ H.Hayashi
resonant heating, Rax swing(3.6m3.9m), ECE, Gamma-ray Diag., RF【Coordinator#1】Y.Takemura
probe【Coordinator#2】H.Funaba
15:45-16:45 3s NBI
H2, 【ECH】H.Igami(id:724) Impurity gas puff
【Gas・vacuum・shutter】A/B(id:731) Mag. Conf.: Using LID coilHe, 【Low temp.】noguchi.hiroki(id:734) Probe: HDLP Probe access
CH4 【LID power】M.Kawai/K.Nagahara near LCFS
(id:738) Mag. Conf.: Exp. with low【Coil power】takami.shigeyuki
gamma (Combined)(id:740) ICH: IC wave injection into
【central ctrl.】nonomura.miki
the vaccum (w/o plasma)【data proc.】M.Ohsuna(id:744) Mag. Conf.: Bq = 0%, 150%,【EXP LAN】inoue.tomoyuki
200%[TC](10:30 ～ 16:45)ECH, NBI, ICH
Plasma startup & heating with ICRF, Plasma control by ASTI
# Opt. Pol.
1
CW

Rax
3.6

Bax
2.75

gamma
1.2538Bq
100.0

H2,He,Ar【Responsible person】M.Isobe /H.Hayashi【Coordinator#1】M.Nishiura【Coordinator#2】M.Yoshinuma【ECH】H.Igami【Gas・vacuum・shutter】C/A【Low temp.】noguchi.hiroki【LID power】M.Kawai/K.Nagahara【Coil power】tanoue.hiroyuki【central ctrl.】nonomura.miki【data proc.】M.Ohsuna【EXP LAN】nakamura.osamu

H2,He,N2,Ne,Ar【Responsible person】N.Tamura /H.Hayashi【Coordinator#1】R.Yanai【Coordinator#2】M.Shoji【ECH】H.Takahashi【Gas・vacuum・shutter】B/C【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

SCHe GD

6/ W C
19 e. WDivCryo[MAP](10:30 ～ 16:45)ECH, NBI, ICH
Siliconization via powder injection, Super-long pulse discharge with integrated operation - IPD, impurity seeding, RMP -6/ Th C
20 . W

6/ Fr
21 .

# Opt. Pol.
1CW
2CW
3 ✓ CW

Rax
3.6
3.9
3.9

Bax
2.75
2.63082.5385gamma
1.25381.25381.2538

Bq
100.0
100.0
100.0

SC

✓Div
Cryo(TC)
10:30-12:39 Crystal(Ti), Penning
Gauges, QMS, Neutral pressuregauges, CXS(Ti)
12:48-16:45 3s NBI, Real-time TS,
Back Scattering, CXS9(Ti)(id:724) Impurity gas puff
(id:727) 圧力: High Base PressureOperation(id:740) ICH: IC wave injection
into the vaccum (w/o plasma)(id:748) ECH: off-axis injection(Combined)(id:749) ICH: Antennae insertion
for plasma heating by ICH :Subcool required(MAP)
10:30-12:50 IPD(Si, B), PCI, CXS,HIBP, Crystal(Ti), Sample manipulator
10:30-12:50 IPD(Si, B), LID, PCI,CXS(NBI#3 GV open), HIBP,Crystal(Ti)(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID coil
(id:736) Mag. Conf.: Subcoolconditions (Combined) : Subcoolrequired(id:747) ECH: EC wave injection for
more than 10 s (Combined)(id:749) ICH: Antennae insertion forplasma heating by ICH : Subcool
required(id:758) Insertion of sample, etc.:

LHD projectPrepared byDaily Schedule

Y.Takemura

Date

Experimental Subject

2024/6/18(Tue)Construction of the experimental scaling law of the external RMP penetrationthreshold, Stochastic acceleration using non-resonant microwave heating,Plasma shape effect on bootstrap current in high collisional regime in LHD

Exp. No.

Experimental Session Group1382IA89Time Table

10Session Coordinator

Y.Takemura[2167] / H.Funaba[2144]
11UP

121314151617181920

Gas[IA](10:30 ～ 16:45) ECH, NBI, ICH
10:25-12:50 Establishment of the experimental scaling law of the external RMP penetration threshold(K.Y. Watanabe)# NBI calib. (3shots) will be done between 10:30 and 12:50.
# [Changes of Mag. Strength.: 1.8T -> (1.5T) -> 1.0T -> 0.6T] will be done between 10:30 and 12:50.
12:50-13:40 [De-energizing the coils for switching to a pulse PS -> Energizing the coils: 3.6m, 0.5T]
13:40-14:40 Stochastic acceleration using non-resonant microwave heating (S. Kobayashi (Kyoto U.),K. Nagaoka)
14:40-15:45 [De-energizing the coils for switching from a pulse PS, changing IS coil polarity ->Energizing the coils: 3.6m, 2.64T, Bq=0%]
15:45-16:45 Plasma shape effect on bootstrap current in high collisional regime in LHD (O.
Mitarai(Institute for Advanced Fusion and Physics Education), K.Y. Watanabe)
Sequence:3min

Option✓✓✓Polarity
CWCW
CW
CWCW
CWCWCW

Rax(m)
3.6
3.6
3.63.6
3.6
3.6
3.6
3.6

Bax(T)
1.8
1.0
0.6
0.5
2.64
1.5
0.6
0.75

22DN

[IA]

Details and Experimental Conditions#1234567
821

gamma
1.25381.25381.25381.25381.25381.25381.17391.1739

Bq(%)
100.0
100.0
100.0
100.0
0.0
100.0
100.0
100.0

SubcooledWall Conditioning

GD(Before Exp.): None , GD(After Exp.): He , Cryopump(During Exp.): off
Remarks(IA)
10:25-12:50 LID, CXS7(Vp, Vt)
13:40-14:40 ICH startup, ECH non-resonant heating, Rax swing(3.6m-3.9m), ECE, Gamma-ray Diag., RF probe
15:45-16:45 3s NBI【Precautions for today's LHD experiments】(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID coil
(id:734) Probe: HDLP Probe access near LCFS
(id:738) Mag. Conf.: Exp. with low gamma (Combined)(id:740) ICH: IC wave injection into the vaccum (w/o plasma)(id:744) Mag. Conf.: Bq = 0%, 150%, 200%
(id:748) ECH: off-axis injection (Combined)(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required(id:752) NBI: Injection into the discharges with low fields(id:754) Mag. Conf.: Vertical field sweep(id:755) ECH: Non-resonant stochastic heating/acceleration

H2,He,C
H4

LHD projectPrepared byDaily Schedule

N.TamuraDate2024/6/19(Wed)Experimental Subject

Plasma startup & heating with ICRF, Plasma control by ASTI

Exp. No.

Experimental Session Group1383

TC
89

Time Table

10Session Coordinator

M.Nishiura[2184] / M.Yoshinuma[2172]
11UP

1213141516

1718

19

20

2122DN[TC]Details and Experimental Conditions

Gas[TC](10:30 ～ 16:45) ECH, NBI, ICH
10:30-12:39 ICRF plasma startup and heating (Yurii Kovtun(KIPT), T. Seki)
12:39-12:48 NBI calib.(3 shots)
12:48-16:45 Demonstration of real-time ECH plasma control by ASTI (S. Murakami(Kyoto Univ.),
N. Kenmochi)

H2,He,Ar

Sequence:3min#Option1

Polarity
CW

Rax(m)
3.6

Bax(T)
2.75

gamma
1.2538

Bq(%)
100.0

Subcooled

Wall Conditioning

GD(Before Exp.): He , GD(After Exp.): He , Cryopump(During Exp.): onRemarks(TC)
10:30-12:39 Crystal(Ti), Penning Gauges, QMS, Neutral pressure gauges, CXS(Ti)
12:48-16:45 3s NBI, Real-time TS, Back Scattering, CXS9(Ti)【Precautions for today's LHD experiments】(id:724) Impurity gas puff
(id:727) 圧力: High Base Pressure Operation(id:740) ICH: IC wave injection into the vaccum (w/o plasma)(id:748) ECH: off-axis injection (Combined)(id:749) ICH: Antennae insertion for plasma heating by ICH : Subcool required

LHD projectPrepared byDaily Schedule

R.Yanai

Date2024/6/20(Thu)

Experimental Subject

Siliconization via powder injection, Super-long pulse discharge withintegrated operation - IPD, impurity seeding, RMP -Exp. No.

Experimental Session Group1384

MAP
89Time Table

10Session Coordinator

R.Yanai[2163] / M.Shoji[2151]
11UP

1213

14

15

16

17

18

19

20

2122

DN

[MAP]

Details and Experimental Conditions

Gas[MAP](10:30 ～ 16:45) ECH, NBI, ICH
H2,He,N2
10:30-12:50 Siliconization via Si powder injection (F. Nespoli(PPPL), S. Masuzaki),Ne,Ar# NBI calib. (3 shots) will be done between 10:30 and 12:50.
12:50-13:00 [Change of Discharge Sequence: 3 min 30 sec -> Others]
13:00-16:45 Super-long pulse discharge with integrated operation - IPD, impurity seeding, RMP (S. Masuzaki)
Sequence:3min30s, Other#OptionPolarity
1CW
2
CW
3
✓
CW

Rax(m)
3.6
3.9
3.9

Bax(T)
2.75
2.63082.5385gamma
1.25381.25381.2538

Bq(%)
100.0
100.0
100.0

Subcooled✓

Wall Conditioning

GD(Before Exp.): He , GD(After Exp.): None , Cryopump(During Exp.): onRemarks# NBI: Only from the commercial power line. MG should be stopped.
# Shielded Door: If the shutters for the CXS cannot be closed, the shielded door to the LHD torus hall must be closed today,even if it is opened after the experiment.
(MAP)
10:30-12:50 IPD(Si, B), PCI, CXS, HIBP, Crystal(Ti), Sample manipulator
10:30-12:50 IPD(Si, B), LID, PCI, CXS(NBI#3 GV open), HIBP, Crystal(Ti)【Precautions for today's LHD experiments】(id:724) Impurity gas puff
(id:731) Mag. Conf.: Using LID coil
(id:736) Mag. Conf.: Subcool conditions (Combined) : Subcool required(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:758) Insertion of sample, etc.: Insertion of samples using manipulator(id:762) Impurity powder dropper