SOW _33-ID_SmallFastDetector.docx

APS-U XPCS 8-ID DT-1 detector June 24, 2022

Table of Contents

Introduction

The PtychoProbe 33-ID beamline requires high count rate, high frame rate pixel detector with a silicon sensor for ptychography experiments. The entire detector will need operating inside of vacuum chamber (“detector flight tube”).

Technical Requirements

PtychoProbe 33-ID Small, Fast Ptychography Detector

· Pixel size <= 75 microns

· Size: >= 192 x 192 pixels

· Frame Rate

· >= 20,000 Hz, 12-bit, continuous

· >= 30,000 Hz, 8-bit, continuous

· Bad pixels < 0.5%

· Minimum threshold < 5 keV

· Number of energy thresholds > 1

· Maximum pixel-to-pixel responsivity variation < 1% (5-100kev)

· Sensor: Si > 400 microns

· Maximum count rate: >= 1.5e9 photons/second/pixel @ 10 keV

· Hardware interlock for sensor bias voltage shutoff

· Vacuum feedthroughs

· Weight < 5 kg

· Maximum physical dimensions (W x H x D): 80mm x 80mm x 300mm

· Sensor-to-sample distance >= 75mm

· Minimum cable lengths

· In-vacuum: 5 m

· Atmosphere: 1 m

· Environment: vacuum compatibility (ambient or < 1 millitorr)

· Special requirements

· Needs to translate inside vacuum chamber approximately 4.5 m.

· The cables will exit the chamber in the approximate center of the chamber. This means the cables will need to accommodate ±2.3 m of travel and any additional cable length for the cable tray.

· Vacuum feedthroughs are to be provided.

· Mechanical Constraints:

· Final cable lengths and feedthroughs are to be approved by the APS-U technical representative at the Final Design Review and prior to manufacture.

· EPICS: AreaDetector driver that is part of https://github.com/areaDetector

Schedule Detector shall be delivered within ten months of the award of the contract.

Quality Assurance Requirements Successful acceptance of detector at ANL will depend on satisfaction of all the technical requirements listed in previous section. Beamline representatives and APS-U staff will make this determination. In particular, we will take X-ray flood field measurements with a sealed source (Fe55) to verify the number of bad pixels and energy thresholds. We will scan the energy threshold below 5 keV to confirm the minimum threshold is achieved on 99% of the pixels. Using the vendor and EPICS areaDetector software, we will acquire dark images at the various frame rates/bit-depth combinations to confirm the long-term (~ 24 hours) stability of the data acquisition system; we will monitor for dropped frames.

All electrically energized systems shall be listed by a Nationally Recognized Testing Laboratory (NRTL). A NRTL list can be found at https://www.osha.gov/dts/otpca/nrtl. All connections and terminations need to be NFPA 70 latest edition compliant. If integrated assemblies of electrical components have not been tested, the vendor must be able to demonstrate that the assemblies or individual components have been constructed according to applicable standards such as those associated with Underwriters Laboratories (UL), the American National Standards Institute (ANSI), the Institute of Electrical and Electronic Engineers (IEEE), the National Electrical Manufacturers Association (NEMA), Semiconductor Equipment Manufacturers International (SEMI), or comparable standards organizations located outside the United States. If the system is not listed by the U.S. Occupational Safety and Health Administration’s NRTL Database, it will be inspected by the ANL Designated Electrical Equipment Inspectors (DEEI) program.

The following criteria will be used for determining acceptance:

· Written report verifying that the inspection data meets the requirements.

· No shipping damages.

· Passes visual inspection for anomalies.

· Written correspondence by the supplier of any deviations using the APS-U Supplier Disposition Report (SDR) form, as required.

Warranty The manufactured components shall be warranted for 12 months after installation at the 33-ID beamline endstation.

Installation On-site installation of the detectors at the APS endstation will be carried out by the vendor. Beamline representatives and APS-U staff will be available to assist in the acceptance and installation process.

Upon arrival at ANL, vendor personnel shall take ANL Contractor Safety Training and satisfy all APS-U safety requirements before beginning installation and any other work activities associated with the installation and testing procedures. A half day should be allocated at the beginning of the installation for ANL Contractor Safety Training and a pre-job safety briefing and inspection.

Protection of Materials and Equipment During Shipment

The detector shall be delivered to the APS-U in a manner that protects the product from any damage.

Attachments

· APSU Procurement QA form ANL-407.

· APSU Supplier Disposition Report (SDR) form.

image1.png image2.png