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WFI

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WFI devices
Phase-1
w19c1 - Draft 1, pick#7, epi, A, (epoxy void)

Phase-2
w90c2 - Draft 2, pick#6, epi, A+, 0.99995 SCTE
w16c2 - Draft 2, pick#7, epi, A-, 4 HC with BC near A edge

Phase-2 makeup
10-16-1 - Draft 3, pick#6, epi, A+, 0.99995 SCTE
10-15-5 - Draft 3, pick#7, epi, A, 0.99995 SCTE

(just added:)
10-16-5 epi, A+, 0.99995+ CTE
10-16-6 epi, A+, 0.99995+ CTE

8th chip
10-15-1 epi, A, 0.9999? CTE

They were installed as shown below:


B---------A B---------A B---------A B---------A
| | | | |
| | | | |
| CCD-4 | CCD-5 | CCD-6 | CCD-7 |
-----------| | | | |----------
| | 10-15-1 | 90-2 | 10-16-6 | 10-15-5 | |
| Guider 5 | A | A+ | A+ | A | Guider 1 |
| | epi-Ph2 | epi-Ph2 | epi-Ph2 | epi-Ph2 | |
|-----------| low BW | low BW | low BW | low BW |----------|
| | AB amps | AB amps | Aamp(B?) | AB amps | |
| Guider 6 | | | | | Guider 2 |
| | | | | | |
|-----------|-----------------------------------------------|----------|
| | | | | | |
| Guider 7 | | | | | Guider 3 |
| | CCD-3 | CCD-2 | CCD-1 | CCD-0 | |
|-----------| | | | |----------|
| | 19-1 | 10-16-1 | 10-16-5 | 16-2 | |
| Guider 8 | A | A+ | A+ | A- | Guider 4 |
| | epi-Ph1 | epi-Ph2 | epi-Ph2 | epi-Ph2 | |
-----------| bad BW | low BW | low BW | low BW |----------
| AB amps | Aamp(B?) | Aamp only | AB amps |
| | | | |
| | | | |
A---------B A---------B A---------B A---------B

NOTE

Guider chip 3 is not operational

General Characteristics

Description	CCDI20 thin, back-illuminated
Pixel Size(micron)	15x15
Chip size	2048x4096
Prescan Pixels	10
Postscan Pixels	10

CCD number	CCD20	CCD21	CCD22	CCD23	CCD24	CCD25	CCD26	CCD27
WFI number	WFI0	WFI1	WFI2	WFI3	WFI4	WFI5	WFI6	WFI7
Serial Number	16-2	10-16-5	10-16-1	19-1	10-15-1	90-2	10-16-6	10-15-5
Vod	+19.0V	+19.0V	+19.0V	+19.0V	+19.0V	+19.0V	+19.0V	+19.0V
Vrd	+12.5V	+12.5V	+12.5V	+12.5V	+12.5V	+12.5V	+12.5V	+12.5V
Vog	0V	0V	0V	0V	-1V	0V	0V	-1V
Vp1,2,3	+2, -6V	+2, -6V	+2, -6V	+2, -6V	+2, -6V	+2, -6V	+2, -6V	+2, -6V
Vs1,2,3	+6, -3V	+6, -3V	+6, -3V	+6, -3V	+6, -3V	+6, -3V	+6, -3V	+6, -3V
SW	+5, -5V	+5, -5V	+5, -5V	+5, -5V	+5, -5V	+5, -5V	+5, -5V	+5, -5V
RG	10, 0V	10, 0V	10, 0V	10, 0V	10, 0V	10, 0V	10, 0V	10, 0V
SCP	10V	10V	10V	10V	10V	10V	10V	10V

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The UCO/Lick Detector Development Lab tested a number of MIT/Lincoln Labs CCID20 2Kx4K CCDs as part of the detector development consortium established by Gerry Luppino at the University of Hawaii. The results are as follows

• MIT/Lincoln Labs CCID20 Phase 1 CCD Test Results
• MIT/Lincoln Lab CCD21 Data Information
• Link to original test result of phase 1 http://gardiner2.ucolick.org/~ccdev/lincoln/phase1/lincoln.html

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• Astromed 3200 Controller Performance
• SDSU1 Controller Performance
• Screening Data
• Cosmetics
• Quantum Efficiency
• Images
• Detector History
• Manufacturer's Data Sheet

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Astromed 3200 Controller Performance

Amplifier B in use called CCD21

Characteristic
Readout Speed	Slow	Fast
CCDI
PGAIN
TC
Noise (e-/RMS)
Gain (e-/ADU)
Full Frame READOUT TIME [secs]
Non-Linearity Correction Alpha
Control Temperature [K]
Linearity 0.1% [e]
Dark Current [e/px/hr]

Non-Linearity Correction Alpha

Fast Readout

Time (T)	Counts	Signal (No)	Rate (No/T)
0
1
5
10
15
20

From graph of rate versus time, then

Rate = mT + c = 3.085 T + 1124.011

Alpha = m/c*c = 2.442E-06.

Slow Readout

Time (T)	Counts	Signal (No)	Rate (No/T)
0
1
5
10
15
20
25
30

From graph of rate versus time, then

Rate = mT + c = 4.135 T + 2104.68

Alpha = m/c*c = 9.335E-07

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SDSU1 Controller Performance

Amplifier B in use.

Characteristic	Amplifier A
Readout Speed	Slow	Fast
Noise (e-/RMS)
Gain (e-/ADU)
Full Frame READOUT TIME [secs]
Control Temperature [K]
Linearity 0.1% [e]
Dark Current [e/px/hr]

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Amplifier Screening Data

Setup

TEST RESULTS

Amplifier Characteristics

Characteristic	Amplifier A	Amplifier B
Noise (e-/RMS) (16us) &
Noise (e-/RMS) (4us) &
Gain (e-/DN)
Parallel CTE
Serial CTE

 
* Determined by Fe55 x-ray test
# Determined by cosmic ray
& value in () represent integration time on reset and data

Other Characteristics

Characteristic	Value
Full Well
Dark Current top *
Dark Current middle *
Dark Current bottom *

 
* Measured from 1000s integration
 

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Cosmetics

Dead Columns :

Hot Columns :

Low Columns :

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Quantum Efficiency

Wavelength	Quantum Efficiency %
3200A
3500A
4000A
4500A
5000A
6000A
6500A
7000A
8000A
9000A
10000A

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Images

The following images are available as fits files

• bias
• flats ~ 100e
• flats ~ 10000e
• dark 10 minute exposure
• Dot test pattern image

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Detector History

• WFI arrived 27 July 2000
• test000807/test000807.htm contains the results of the first cooldown
• test20001103/test20000311.htm discussion of heater booster circuit

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