Sample Changer for the Ultra-Low Level High-Purity Germanium (HPGe) Detector

Dear Sir/Madame, you are kindly requested to provide quotation as per requirements stated in the attached documents.

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Dear Sir/Madame, please kindly find below some clarifications for the RFQ in subject.

Question #1:

Please clarify for how long "Canberra 777 shield" can be removed from IAEA laboratory for redesign of the top part (lid).

up to 2 months

Question #2:

Please clarify the meaning of the sentence: "Shall be equipped with a barcode recognizing system, which is capable of reading QR codes from all directions". Does it mean that QR code can be put on the sample from any side or it will be placed on the top side but with different orientation?

If possible the top would be preferable. Then of course it must be possible to handle different orientation. If not, the Barcode will have to be placed on the side and should then be detectable no matter of the rotation of the Z-axis.

Question #3:

Do you expect the various sample types (shapes) can be measured in one batch?

no

Question #4:

Concerning the various sample shapes (Flat Base Samples) – is it possible to use a system where only one plastic container (holder) is used and various samples are inserted into this container (holder)?

having a single plastic holder should be ok, provided it can accept various sample types, e.g., 12 cm x 12 cm Petri dish, 20 mL vial, or 125 mL bottle

Question #5:

Marinelli Beakers – it is not specified precisely in the documentation. Can you clarify if we can select one type of Marinelli Beakers or all expected types (with given dimensions limitation) can be used?

type 138-G that fits a 3.75” end-cap is enough

Question #6:

The Sample Changer shall be compatible with a power supply of 220-240 V and 50 Hz. Can you give us value of currently used circuit breaker/protection in A (amperes)?

22 Amps

Question #7:

Is it possible to use pressurized air for some parts of the system (like mechanical arm)? If so can you confirm there is a source of pressurized air or the source of pressurized air (compressor) should be part of delivery?

Pressurized air is available, although we would prefer to use the system without the need of pressurized air. No Compressor.

Question #8:

What kind of cooling system of HPGe detector is used (liquid nitrogen/electromechanical system like X-Cooler from ORTEC)?

Mobius (ORTEC)

Question #9:

Is expected height 2.5 m strict requirement or higher system (< 2.7 m) is also acceptable?

up to 2.7 m would be acceptable

Question #10:

Please, can you clarify the requirement for accuracy "Repeat accuracy shall be 0.5mm @ 3s"? We don't understand why repeat accuracy is defined with time 3s. Usually it is defined without any time restriction (which means that device should able to move the sample to the desired position within tolerance 0.5 mm).

0.5mm@3SIGMA (S for SIGMA not seconds)

Question #11:

Requirements of the maximum package for shipping is 2 x 1.4 m. Does it mean that maximum door size in the place of installation is that size? In another words – the system must be transported dismantled to the laboratory and any part cannot be larger than 2 x 1.4m?

this is correct. The individual package(s) shall fit the door frame that is not larger than 2 m x 1.4 m (H x W).

Question #12:

Additional question to answer #5 – Marinelli Beaker type 138-G was specified which volume is approx. 1.6 liter. Can you confirm that maximum weight of the sample will be less or equal to 3 kg? If not, can you state maximum weight of the sample?

Confirmed. The weight is less or equal 3 kg.

Question #13:

Additional question to answer #4 – are dimensions 12 cm x 12 cm Petri dish correct? Is it really 12 cm in diameter and 12 cm height? Maybe the height should be 12 mm?

It is a square petri dish 12 cm x 12 cm in size. The height may be up to 17 mm depending on a manufacturer.

http://www.sigmaaldrich.com/catalog/product/aldrich/z692344?lang=de&region=AT

Question #14:

Additional question to answer #8 – Do you have MOBIUS with vertical cryostat (MOBIUS placed under lead shielding) or J-style MOBIUS?

It has a vertical cryostat with Mobius installed directly under the shield.

Question #15:

Additional question to answer #6 – Do you strictly require one phase 220V power or three phase is also acceptable? We are using engines which are not recommended for one phase distribution (due to limit 30 mA for current protection).

Additional question to answer #6 – Do you strictly require one phase 220V power or three phase is also acceptable? We are using engines which are not recommended for one phase distribution (due to limit 30 mA for current protection).

Question #16:

Can you clarify what MultiChannel Analyser (MCA) will be used? Can you confirm that MCA is not a part of delivery?

We are using a Canberra Lynx DSA. This MCA is not a part of the delivery.

Question #17:

Can you confirm that Genie 2000 SW is not a part of delivery and you have all necessary licenses (Genie 2000 Basic Spectroscopy and Genie 2000 Gamma Analysis Option) and Genie 2000 hardware key?

Confirmed. The SW and the key will be provided on site.

Question #18:

Can you confirm that control PC is not a part of delivery?

Confirmed. The PC will be provided on site.

Question # 19 Who has to provide the PC and the Windows 7 operating System?

IAEA will provide this.

Question #20  Who has to provide Genie 2000 software?

IAEA will provide this.

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#1. Concerning the installation of the Sample Changer – is it possible to screw holes into the floor/walls to fix the Sample Changer?

No.

#2. Please clarify what kind of information/data are stored in the QR-Codes of the samples? How shall the system store or process the information? 

We have a set of reusable sample beakers with individual IDs stored in a QR-code attached to the beaker. Every sample that comes to the Laboratory is assigned an individual ID number, which is also stored as a QR-code. In order to perform measurements individual samples are loaded inside the sample beakers. It is planned to have a QR-code reader that will correlate the sample QR-code (sample ID) with the beaker QR-Code (beaker ID) to keep track of which sample was loaded in which beaker. This information is then going to be used by the counting system and automatically stored with the corresponding gamma-spectrum.

#3. Concerning point 3.2.8 – Shall the maximum size include the Canberra 777 shield and shall it also be enclosed for safety? 

Yes. This includes the shield, although small deviations from the desirable maximum size might be tolerated. All moving parts shall be enclosed (with a safety wall or frame).