R7081-02 for ICECUBE

Hamamatsu Photonics K.K. Electron Tube Division

R7081-02 for ICECUBE

1. Delivery Record and Plan

2. Specification of R7081-02

3. Test Result at Hamamatsu

4. Homework at the meeting in May

5. Sampling Test Method

6. Handling for Rejection tubes

Meeting with Dr.Yoshida/Univ of Chibaon June 9 2004 at Hamamatsu


Delivery Record and Plan (1)

16 tubes were delivered to Univ of Chiba for sampling Test.

Order for 150 pcs in 2003 Transportation : AIR

Customers Jul. 2003 Aug. 2003

Univ of Wisconsin 72 pcs 18 pcs

DESY Zeuthen --- 32 pcs

Stockholms Univ --- 24 pcs

Univ of Chiba --- 4 pcs


Delivery Record and Plan (2)Order for 360 pcs in 2004 Transportation : AIR

Customers April 15 May 18 June 10 July 8

Univ of Wisconsin 96 pcs 48 pcs 96 pcs 24 pcs

DESY Zeuthen --- --- --- 48 pcs

Stockholms Univ --- 48 pcs --- ---

Univ of Chiba --- --- --- ---

Order for 360 pcs in 2004 Transportation : SAT

Customers Aug. 28 Sept. 25 Oct. 30

Univ of Wisconsin 120 pcs 120 pcs 120 pcs

Univ of Chiba --- --- ---


Delivery Record and Plan (3)

Hamamatsu expects continuous orders.

Delivery rate would be 72 - 120 pcs per month.

<Example>

From Nov.2004 to May 2005 : 500 pcs

From Jun.2005 to May 2006 : 1080 pcs





Specification for R7081-02CHARACTERISTICS (at 25 deg C ) data is supplied with PMT

Min. Typ. Max. Unit Luminous (2856K) - 80 - uA/lm

Radiant at 420nm - 80 - mA/W

Blue (CS-5-58 filter) - 10.0 - uA/lm-b

Quantum efficiency at 390nm - 25 - %

Luminous (2856K) - 800 - A/lm

Radiant at 420nm - 8.0E+05 - A/W

Gain - 1.0E+07 - -

Supply Voltage for Gain of 1.0E+07 - 1500 V

Supply Voltage for Gain of 5.0E+07 - 1700 2000 V

Anode Dark Current (after 30min.storage in darkness) - 200 1000 nA

Dark Count (after dark condition for 15 hours) at +25 deg C note-1 7,000 15,000 s -1

Dark Count (after dark condition for 15 hours) at -40 deg C note-1 & 2 500 1000 s -1

Anode Pulse Rise Time - 4.2 - ns

Electron Transit Time - 60 - ns

Transit Time Spread (T.T.S.) note-1 3.2 - ns

Pre Pulsing (at 50p.e.) 10nsec-100nsec before Main pulse note-1 0.5 2 %

Late Pulsing 25nsec-100nsec before Main pulse note-1 1.5 5 %

After Pulsing 100nsec-16usec before Main pulse note-1 2.0 10 %

P/V (Peak to Valley Ratio) (at single p.e.) 2.0 2.5 note-1 -

at ±2% Deviation - 70 - mA

Anode Sensitivity

Time Response

Pulse Linearity

Parameter

Cathode Sensitivity


Voltage Divider for R7081-02

Electrodes K Dy1 F2 F1 F3 Dy2 Dy3 Dy4 Dy5 Dy6 Dy7 Dy8 Dy9 Dy10 P

Ratio 16.8 0 0.6 0 3.4 5 3.33 1.67 1 1.2 1.5 2.2 3 2.4

Capacitors in uF 0.01 0.01 0.01

Supply Voltage : 1500V, K : Cathode, Dy : Dynode, P : Anode, F : Focus

Table 1 : DIVIDER RATIO AND SUPPLY VOLTAGE

Anode Sensitivity, Gain and Pulse Linearity are specified at 1500V,other anode characteristics are specified at supply voltage forGain of 1.0E+07 with the divider shown in Table.1.

note-1 : LLD is set at 0.25 p.e. in the test. note-2 : Hamamatsu doesn't measure it, but guarantees the value.


Drawing of R7081-02


Test Result for 150 pcs in 2003R7081-02 Ebb for Gain of 1E+07

0

10

20

30

40

50

60

70

-1100 -1200 -1300 -1400 -1500 -1600 -1700

Ebb (V)

Nu

mb

er o

f Tu

bes

(p

cs)

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4

Ebb = Applied Voltage

Ebb (V)No ofTubes

-1100 0-1200 7-1300 62-1400 62-1500 15-1600 4-1700 0Total 150

Ave. 1319VMax. 1590VMin. 1160V

1500V typ.


Test Result for 150 pcs in 2003R7081-02 Ebb for Gain of 5E+07

0

10

20

30

40

50

60

70

- 1300 - 1400 - 1500 - 1600 - 1700 - 1800 - 1900 - 2000 2000 -

Ebb (V)

Nu

mb

er o

f Tu

bes

(p

cs)

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4


Ebb (V)No ofTubes

- 1300 0- 1400 2- 1500 12- 1600 58- 1700 56- 1800 17- 1900 3- 2000 22000 - 0Total 150


1700V typ.2000V max.


Test Result for 150 pcs in 2003

R7081-02 Ebb vs Serial No.

0

500

1000

1500

2000

0 50 100 150 200

Ebb = Applied Voltage for Gain of 1E+07

Eb

b f

or

1E+

07 (

V)

Serial No.

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4


Test Result for 150 pcs in 2003R7081-02 Peak to Valley Ratio

0

10

20

30

40

50

60

70

80

-2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0

Peak to Valley Ratio

Nu

mb

er o

f Tu

bes

(p

cs)

Divider Ratio : 600V-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4

at Gain of 1E+07

PV ratioNo. ofTubes

-2.0 0-2.5 4-3.0 21-3.5 75-4.0 47-4.5 3-5.0 0Total 150

Ave. 3.33Max. 4.25Min. 2.3

2.0 min.2.5 typ.

(K-DY1:600V)


Test Result for 150 pcs in 2003R7081-02 TTS (FWHM)

0

1020

30

4050

60

7080

90

-2.75 -3.00 -3.25 -3.50 -3.75 -4.00 -4.25

TTS (FWHM) (ns)

Nu

mb

er

of

Tub

es

(p

cs

)

Divider Ratio : 600V-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4

at Gain of 1E+07

TTS (ns)No. ofTubes

-2.75 0-3.00 0-3.25 15-3.50 84-3.75 48-4.00 3-4.25 0Total 150

(ns)Ave. 3.44Max. 4.92Min. 3.04

3.2 ns typ.

(K-DY1:600V)


Test Result for 150 pcs in 2003R7081-02 Dark Counts (kcps)

0

10

20

30

40

50

60

70

80

-1.0 -2.0 -3.0 -4.0 -5.0 -6.0 -7.0 7.0-

Dark Counts (kcps)

Nu

mb

er o

f Tu

bes

(p

cs)

Divider Ratio : 600V-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4

at Gain of 1E+07

DarkCounts(kcps)

No ofTubes

-1.0 0-2.0 5-3.0 40-4.0 68-5.0 34-6.0 2-7.0 17.0- 0Total 150

(kcps)Ave. 3.48Max. 6.9Min. 1.3

7K cps typ.15K cps max.

(K-DY1:600V)


Test Result for 150 pcs in 2003R7081-02 SKB (Cathode Blue Sensitivity)

05

1015202530354045

-7.5 -8.0 -8.5 -9.0 -9.5 -10.0 -10.5 -11.0

SKB (Cathode Blue Sensitivity)

Nu

mb

er o

f Tu

bes

(p

cs)

SKBNo. ofTubes

-7.5 0-8.0 4-8.5 40-9.0 38-9.5 34-10.0 26-10.5 8-11.0 0Total 150

Ave. 9.0Max. 10.4Min. 7.9

10.0 typ.



1500V typ.

R7081-02 Ebb for Gain of 1E+07

0

20

40

60

80

100

120

140

-1100 -1200 -1300 -1400 -1500 -1600 -1700

Ebb (V)

Nu

mb

er o

f Tu

bes

(p

cs)

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4


Ebb (V)No ofTubes

-1100 0-1200 2-1300 64-1400 118-1500 77-1600 23-1700 4Total 288




1700V typ.2000V max.

R7081-02 Ebb for Gain of 5E+07

0

10

20

30

40

50

60

70

80

90

100

- 1300 - 1400 - 1500 - 1600 - 1700 - 1800 - 1900 - 2000 2000 -

Ebb (V)

Nu

mb

er o

f Tu

bes

(p

cs)

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4


Ebb (V)No ofTubes

- 1300 0- 1400 0- 1500 6- 1600 62- 1700 88- 1800 82- 1900 29- 2000 212000 - 0Total 288




R7081-02 Ebb vs Serial No.

0

500

1000

1500

2000

0 50 100 150 200 250 300 350

Ebb = Applied Voltage for Gain of 1E+07

Eb

b f

or

1E+

07

Serial

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4


Test Result for 288 pcs in 2004R7081-02 Peak to Valley Ratio

0

20

40

60

80

100

120

-2.0 -2.5 -3.0 -3.5 -4.0 -4.5 -5.0

Peak to Valley Ratio

Nu

mb

er o

f Tu

bes

(p

cs)

at Gain of 1E+07

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4

PV ratioNo. ofTubes

-2.0 0-2.5 6-3.0 70-3.5 112-4.0 82-4.5 17-5.0 1Total 288

Ave. 3.31Max. 4.59Min. 2.21

2.0 min.2.5 typ.


Test Result for 288 pcs in 2004R7081-02 TTS (FWHM)

0

20

40

60

80

100

120

140

160

-2.75 -3.00 -3.25 -3.50 -3.75 -4.00 -4.25

TTS (FWHM) (ns)

Nu

mb

er

of

Tub

es

(p

cs

)at Gain of 1E+07

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4

TTS (ns)No. ofTubes

-2.75 0-3.00 2-3.25 9-3.50 57-3.75 149-4.00 70-4.25 1Total 288

(ns)Ave. 3.62Max. 4.06Min. 2.87

3.2 ns typ.



7K cps typ.15K cps max.

R7081-02 Dark Counts (kcps)

0

10

20

30

40

50

60

70

80

90

-1.0 -2.0 -3.0 -4.0 -5.0 -6.0 -7.0 7.0-

Dark Counts (kcps)

Nu

mb

er

of

Tub

es

(p

cs

)at Gain of 1E+07

Divider Ratio : 16.8-0.6-3.4-5-3.33-1.67-1-1.2-1.5-2.2-3-2.4

DarkCounts(kcps)

No ofTubes

-1.0 0-2.0 0-3.0 35-4.0 85-5.0 71-6.0 48-7.0 427.0- 7Total 288

(kcps)Ave. 4.53Max. 7.5Min. 2.1



10.0 typ.

R7081-02 SKB (Cathode Blue Sensitivity)

0102030405060708090

100

-7.5 -8.0 -8.5 -9.0 -9.5 -10.0 -10.5 -11.0 -11.5 -12.0

SKB (Cathode Blue Sensitivity)

Nu

mb

er o

f Tu

bes

(p

cs)

SKBNo. ofTubes

-7.5 3-8.0 11-8.5 59-9.0 75-9.5 95-10.0 40-10.5 4-11.0 0-11.5 0-12.0 1Total 288

Ave. 8.99Max. 11.9Min. 7.1


Dark Counts vs Temp.R7081-20 Dark Pulse Counts

0

500

1000

1500

2000

2500

3000

3500

4000

4500

5000

25 0 -20 -40 -60

Temperature [deg C]

Da

rk C

ou

nts

[cp

s]

Serial No. : ST5179

Supply Voltage : 1500 [V]


Dark Counts at –10 deg C

4 tubes, which shows larger dark counts, are selected.Dark counts at –10 deg C were checked.(TA0472 is out of SPEC at 25 deg C.)

at 25 deg C at -10 deg C

TA0412 7,800 730

TA0471 7,800 720

TA0472 20,000 1,220

TA0481 7,600 780

Dark Counts at Gain of 1E+07Serial No.


Homework at the meeting in May

<Hamamatsu>

To send Shock & Vibration level of PMT in the Package

To send Shock & Vibration level of PMT itself

To send Handling Procedure of PMT

(ICECUBE wants to know how to handle PMTs.)

To send Component List of PMT

(If PMT is broken, is it dangerous ??)

To send ISO related Document


Homework at the meeting in May<ICECUBE Group>

To check Radioactivity of the Glass

(Hamamatsu sent crushed glass in Jan.2003.)

To check transmittance of the Glass

(Hamamatsu sent glass plates in Jan.2003.)

To check Fluorescence of the Glass

(Hamamatsu sent glass blocks in Aug.2003.)

To send available Test data (for correlation)

To check appearance of all tubes

<= This is being done right now!!


Sampling Test Method

From next batch of 360 pcs order,10 % of tubes will be sent to Univ of Chiba.(12 pcs per month in Aug., Sept., Oct.)(Delivery would be in July, Aug, Sept..)(Transportation would be 4 times.)

Univ of Chiba will test them in 1 month.Test data is used for adjusting production

condition and for making correlation.


How to Handle Rejection

Hamamatsu replaces all rejected tubes.

All expanse is paid by Hamamatsu.

If Hamamatsu doesn’t understand reject reason,

the tube has to be returned for evaluation.

(It depends, but at every 6 months or so)

If reject reason is clear with simple report,

it’s not necessary to return the tube.

Documents

R7081-02 for ICECUBE